Loading...
Welcome to Metal Mine! Today is Share:
×

扫码分享

Table of Content

    25 September 2020, Volume 36 Issue 09
    Highlevel hidden Geological Hazard Investigation and Prevention Measures in Guizhou Longli
    WANG Furui LI Yantao XU Pengfei CHENG Junyi
    2020, 36(09):  1-5. 
    Asbtract ( 57 )   PDF (2501KB) ( 92 )  
    Related Articles | Metrics
    In the investigation of the highlevel hidden geological hazards in Longli County,in order to understand the basic situation of the highlevel hidden geological hazards in the area and take corresponding prevention measures,on the basis of conducting field investigations,combining modern technologies such as drone aerial photography Means to investigate.After investigation,a total of 9 hidden highrisk geological hazards in Longli County are all hidden geological hazards,and the number of people under threat is 1,336 from 317 households.Aiming at the characteristics and influencing factors of highlevel hidden geological hazards in Longli County,the early stage focused on monitoring and early warning,and carried out engineering treatment or relocation of geological hazards with a large number of threats and serious impacts to completely eliminate hidden hazards.It is planned to adopt engineering treatment for 6 disaster sites;it is planned to adopt relocation to avoid 3 disaster sites.
    Study on Genesis and Metallogenic Model of LongkouTudui Gold Deposit in Northeastern Margin of Jiaolai Basin
    LI Dadou
    2020, 36(09):  6-11. 
    Asbtract ( 114 )   PDF (2391KB) ( 83 )  
    Related Articles | Metrics
    Jiaolai Basin is located in the MupingRushan gold metallogenic belt,with frequent tectonic magmatic activity,which provides excellent conditions for the formation of gold deposits.It is another important gold,copper,lead,zinc and other polymetallic metallogenic area in the Jiaodong area.In order to explore the genesis and metallogenic model of the gold deposits in this gold mining area,the mineralization geological characteristics,metallogenic geological conditions,metallogenic fluids,and metallogenic material sources of the LongkouTuidui gold deposit and surrounding gold deposits were used to further explore the genesis and metallogenic properties of the deposits mode.The study concludes that the gold deposits in the northeast margin of the Jiaolai Basin are generally controlled by the northeasttrending Taocun fault,LongkouTuiduo fault,ZhuwuYazi left strike slip fault structure system and the edge of the Lafen basin.The system control of the shovel slippage structure.The oreforming materials originate from the mixed area of deepsource magma,and the orebearing fluid extracts the oreforming materials in the formation of Jingshan Group during the upward migration process.In the (120±10) Ma landslide structure system and its secondary faults along the basinedge northeast trend,it was replaced and filled with mineralization.In an acidic fluid environment,a pyritetype altered rocktype gold deposit with silicification and sericite alteration as the main formation is formed.The metallogenic model of gold deposit concentration area in the northeast margin of Jiaolai Basin is proposed.
    The Metallogenic Signature and Genesis Discussion of Fluorite Deposits in Yongfeng Area,Jiangxi
    CHEN Shumin CHEN Aiguo HU Longhua CHENG Ming Liao Jia
    2020, 36(09):  12-17. 
    Asbtract ( 95 )   PDF (2162KB) ( 99 )  
    Related Articles | Metrics
    Yongfeng area is where the largest fluorite deposit located in Jiangxi province,in order to study the geological signatures and genesis of the fluorite for further development of resource potential,recent reserves verification on the two fluorite deposits in this area,revealed the metallogenic signature as below:①ore body is strongly constrained by NNE/NE fault structures,growth in the contact "spot" between metamorphic basement rocks of Nanhuan System and granite of Yanshan Period.②The rock type is highK calcalkaline adakite.③The relationship of enrichment and depletion between CaF2 and SiO2 are opposite,thus indicate a quantitative depletion of CaF2 due to silicification post mineralization.Resembling remarkably the ore genesis in Mt Wuyi area,metallogenic material such as F,Ca,Si,were offered prime opportunity by both metamorphic and magmatic wallrocks.Hydrothermal fluids,which consist of atmospheric precipitation in an infiltrated downward process plus magma,then heated and initiated upwelling by tectonic stress,in terms of extraction and strainer within wallrock.Finally,precipitation and enrichment along with favorable position in fault structures,allow fluorite deposits of lowtemp hydrothermal filling type been formed.
    Analysis on Geological Characteristics and Development and Utilization of Sand Shale Deposit for Cement Proportioning in Wanghushan,Chaohu City
    HU Yanqiang
    2020, 36(09):  18-21. 
    Asbtract ( 57 )   PDF (1348KB) ( 85 )  
    Related Articles | Metrics
    The wanghushan sand shale ore for cement proportioning in Chaohu City,Anhui Province,is a monoclinic sedimentary stratiform deposit,and the main ore bearing strata are the Fentou formation and Maoshan formation of Silurian system.In order to discuss the development and utilization conditions of the mine,the geological characteristics and ore body characteristics of the deposit are analyzed in detail.The results show that:①the main ore bearing strata in the mining area are fine sandstone and silty mudstone in the Fentou formation (S2f);②the natural types of the ore are argillaceous siltstone,silty mudstone,fine sandstone and siltstone;③ the mining technical conditions of the deposit belong to the medium type (Ⅱ2) mainly based on the engineering geological conditions;On the basis of the analysis,the preliminary analysis of the development and utilization of the deposit is carried out.It is suggested that the industrial index of the ore body should be properly reduced,which can realize the intensive utilization of resources and expand the resource reserves of the mining area,and provide reference for the later detailed investigation,mine construction and geological prospecting and development of similar mining areas.
    Geological Characteristics and Genesis of Ganheba Gold Deposit in Lueyang County,Shaanxi Province
    ZHANG Tianyun
    2020, 36(09):  22-26. 
    Asbtract ( 113 )   PDF (2040KB) ( 95 )  
    Related Articles | Metrics
    Ganheba gold deposit is a tectonic altered rock type gold deposit controlled by both lithofacies and structure in the Mianluekang tectonic melange belt of the southern section of the southern Qinling mountains.The ore bodies are concentrated in the vicinity of the lithologicalstructural contact zone between the Ginjihe phyllite and the Qiaozigou volcanic rocks of the devonian jinjihe formation in the Paleozoic.The oreforming geological characteristics,geochemical background and sulfur isotopes of the ore deposit are summarized.After regional metamorphism,deformation and multistage tectonic activities,the oreforming materials in the source layer are activated and migrated,and the oreforming materials are filled and deposited in the EWtrending tensile fractures to enrich the oreforming process.
    Geological Characteristics and Ore Bearing Space Analysis of Danaopo PbZn Deposit, Huayuan County,Western Hunan Province
    ZHAO Hui LIU Huanjun KONG Xu ZHOU Xiaoxu ZANG Mingyuan
    2020, 36(09):  27-32. 
    Asbtract ( 84 )   PDF (4204KB) ( 78 )  
    Related Articles | Metrics
    Danaopo PbZn deposit is another ultralarge leadzinc deposit newly discovered in the Huayuan leadzinc ore field in recent years.In order to further determine the oreforming geological conditions of the mining area,the strata,lithofacies,structures,Ore body shape,distribution,and oreretaining space characteristics.Exploration work was carried out in the mine.The geological characteristics and oreretaining capacity of the mine were ascertained in detail through 1∶2 000 special geological mapping,drilling,pit exploration,and sampling tests.The spatial characteristics laid the foundation for the search for the same type of deposit.
    Exploitation and Utilization of Copperbearing Iron Ore Resources in Dahongshan No.1 Ore Belt
    SONG Zhaogang QING Longjiang WU Xianwen
    2020, 36(09):  33-36. 
    Asbtract ( 80 )   PDF (1478KB) ( 88 )  
    Related Articles | Metrics
    In order to analyze the exploitation and utilization of copperbearing iron ore body resources in No.1 ore belt of Dahongshan,based on the analysis of the geological characteristics of the ore body,combined with the mining technical parameters and economic indicators of mines,explore the industrial indicators of copperbearing iron ore bodies suitable for mine production and delineate some copperbearing iron ore bodies with mining value based on the original geological data,in order to achieve the improvement of iron and copper No.1.The resource utilization rate of copperbearing iron ore bodies in the ore belt provides reference ideas and the purpose of the method.
    Sedimentary Geological Characteristics and Sediment Source of Luohe Formation in Wunuer Area,Great Khingan Mountains
    LI Liyang LIU Bo
    2020, 36(09):  37-40. 
    Asbtract ( 115 )   PDF (2756KB) ( 81 )  
    Related Articles | Metrics
    Luohe formation in Wunuer area,Great Hinggan Mountains is locate in the accretion zone of the Paleozoic continental margin of the southeast Siberian plate,it's a "window" to recognize Central Asian Orogenic Belt's trencharc system.In order to understand the sedimentary characteristics and source properties of the Luohe formation and enrich the study of sedimentary strata in Central Asian Orogenic Belt's trencharc system,Using sedimentary geology and petrogeochemical methods,the sedimentary geological characteristics and sediment source are analyzed and studied,Based on these works, three following understanding can be found:①Parallel bedding and horizontal bedding are developed in the Luohe Formation,Three main basic sequence types can be seen.②The results of sediment grain size analysis show that the Luohe Formation is shallow sea facies deposit.③The characteristics of major elements,trace elements and rare elements indicate that the sediment source of the Luohe Formation was formed in an island arc environment.
    Coal Quality Features and Coal Forming Environment of the Midlower Jurassic Coal Seam in Korjay Sunken,TurpanHami Basin
    ZHENG Yuanyuan DELEQIATI Jianatayi YAO Zongquan
    2020, 36(09):  41-45. 
    Asbtract ( 110 )   PDF (1557KB) ( 91 )  
    Related Articles | Metrics
    In order to reveal the different mining area coal forming conditions in Korjay Sunken,TurpanHami Basin,discusses the the relationship between coal quality and coal forming environment.Based on the data analysis of industrial analysis,harmful components and ash component index of main coal seam samples.On the basis of the analysis of the basic geological conditions such as the distribution of stratum and the characteristics of coalbearing rock series,the theories and methods of coal geology,coal petrology and coal chemistry are applied.The characteristics of coal seam and coal quality are summarized systematically,and the relationship between coal quality and coal forming environment is discussed.The results show that the study area is divided into 6 major mining areas from west to east.The coal seam is mainly developed in the Xishanyao Formation (J2x) of middle Jurassic and Badaowan Formation (J1b) of lower Jurassic.Coal quality is characterized by low ash,low sulfur,high volatile content,coal ash composition is mainly SiO2,Al2O3.Comprehensive analysis shows that the main coal seams of the MiddleLower Jurassic are formed in lakeriver delta freshwater sedimentary environment of coal formation in terrestrial facies,and also the coalforming environment are warm and humid.
    Application of ARCGIS Data Base Technology in the Evaluation of Land Intensive Use in the Development Zone
    ZHAO Guanzheng
    2020, 36(09):  46-48. 
    Asbtract ( 62 )   PDF (1046KB) ( 95 )  
    Related Articles | Metrics
    Carrying out land intensive use evaluation is of great significance for improving land use efficiency and guiding the direction of land use potential tapping.ARCGIS software is used to assist in the evaluation of land intensive use in the development zone.The organization,conversion,analysis,and establishment of an evaluation database for the data collected in the early stage,carry out evaluation work on this basis and output evaluation results.The results show that the ARCGIS software has a simple data creation process and a high degree of automation.It has obvious advantages over other software and can effectively improve the evaluation efficiency.
    Gob Side Control Technology in Gob Side Entry of Fully Mechanized Top Coal Caving Face in Guhanshan Mine
    MU Libin ZHANG Guangjie WANG Wen
    2020, 36(09):  52-57. 
    Asbtract ( 65 )   PDF (2706KB) ( 79 )  
    Related Articles | Metrics
    Based on the problems of tight replacement of coal mining and difficult control of roadway surrounding rock,taking the 1604 working face of Guhanshan mine as the research background,this paper puts forward the technology of roof cutting and pressure relief to keep roadway along the goaf.Based on the theoretical analysis of the control principle of gob side and the movement characteristics of surrounding rock,the stability control system of gob side in the technology of top cutting and pressure relief is formed,and the industrial test is carried out in the field.The results show that it is feasible to use highstrength prestressed anchor cable to reinforce the roof,single column π beam to support the roof and the protection system of Isteel gangue.The maximum displacement of the solid coal side is 276 mm,the maximum displacement of the goaf side is 216 mm,the maximum displacement of the roof is 225 mm,and the maximum uplift of the floor is 164 mm.The deformation of the protection system of the goaf side gangue is not obvious,and the roadway is changed In a reasonable range,the effect of retaining roadways is good,which can be used for reference in similar conditions.
    Study on Stability of Artificial Dam Body in Underground Reservoir
    HUANG Yongjun
    2020, 36(09):  58-61. 
    Asbtract ( 82 )   PDF (2483KB) ( 89 )  
    Related Articles | Metrics
    In order to determine the vulnerable position and the limit water head value of the artificial dam body of the underground reservoir in the coal mine,the mechanical model of the artificial dam body was established,and the stress distribution function of the dam body was derived based on the thin plate theory of elastic mechanics.Lijiahao underground reservoir was a reference,the theoretical formula was verified and compared by FLAC3D numerical simulation software,and the dam body plastic was compared by using Mohr Coulomb model and DP model respectively.The results show that the first failure position of the dam body is the center of both sides of the front,followed by the center of the bottom of the front,the center of the top of the front and the center of the back.The use of the Mohr Coulomb model in FLAC3D is consistent with the damage analysis of the dam body,which more accurately reflects the damage characteristics of the dam.For the failure prediction of the dam body,the safety factor of the Moor Coulomb model is higher than that of the DP model.Taking the damage of the Moor Coulomb model as a reference,the limit water head value of the artificial dam of Lijiatun is determined to be 24 m.
    Application of the Timeliness of Funds in Development Program Comparison
    ZHANG Jian
    2020, 36(09):  62-64. 
    Asbtract ( 68 )   PDF (1081KB) ( 80 )  
    Related Articles | Metrics
    Mine development investment is huge,the return period is long,and the return on investment is affected by many factors such as engineering design and development.In order to evaluate the added value of the time use of funds for a specific process stage of a mining project,the widely used evaluating method is the timeliness of funds method,which is particularly used in comparison with the initial options of mining investment projects.By means of the calculation of cash flow,the net present value parameter method was selected as the comparative index of the pioneering system.This method must be used in a copper mine development plan.This method is used in a copper mine development plan compare programs,and it can efficiently select the optimal development plan.
    Construction Scheme Optimization about the Midstage Development of Duancunleigou Bauxite
    LI Benteng
    2020, 36(09):  69-72. 
    Asbtract ( 76 )   PDF (1909KB) ( 90 )  
    Related Articles | Metrics
    New midstage development project of the Duancun Leigou bauxite is large,and the engineering geology and hydrogeological conditions are complex.In order to speed up the construction progress and to save the project cost,analyze the main problems in the construction process of the development roadway during the infrastructure period,combine the research results of the hydrogeological conditions of the mining area,put forward to change the location of the development roadway in the new midstage development project from the invein arrangement to the outofvein arrangement,to strengthen the advanced waterexploration through the introduction of highdensity electric method,to cooperate with the development engineering and mining,to achieve a roadwaymaking once through the selection of supporting equipment during the production period,the implementation of optimization measures can effectively reduce the roadway support rate,speed up the progress of the new midstage development project and ensure the safety of construction,for similar mines have an important reference significance.
    Application Study of High Stress Retaining Wall to Deal with Mine Water Hazard
    HU Shouquan LIANG Chao YU Xiaoyan
    2020, 36(09):  73-75. 
    Asbtract ( 94 )   PDF (1544KB) ( 70 )  
    Related Articles | Metrics
    The gradual accumulation of water in the closed stope under the mine will reach a certain level,and it will destroy the bottom pillar,blocked pedestrians,and slip the mine at the local weak parts of the stope,and will be used to carry the tailing sand of the stope into the mine ore.If it is not plugged or the plugging strength does not meet the requirements,a water penetration accident will occur.In this regard,in order to reduce the adverse impact of the retaining wall unable to block the flood,based on the actual project,the design of the blocking retaining wall was carried out according to the supporting form,strength theory calculation,FLAC3D software simulation and other conditions,and the arc retaining wall was determined to be used.The thickness value of the filling retaining wall is 0.6 m,the strength of the key force parts is increased,and the instantaneous strength is increased.The round steel is arranged around the retaining wall in the direction of the arc tangent to maximize the compressive strength of the round steel.After application,it is shown that the blocking effect is obvious,which verifies the rationality of the design.
    Application of "Sixbalances" Management Method in Batai Mine
    LI Gongtang MA Jian
    2020, 36(09):  76-79. 
    Asbtract ( 86 )   PDF (1048KB) ( 91 )  
    Related Articles | Metrics
    In order to strengthen the mine production management,summarize the adverse production phenomena such as emphasizing immediate interests,ignoring longterm development,emphasizing production process,and neglecting safety investment in production,the "six major balance" system management method is put forward.Therefore,to improve the preparation of the exploration and mining reserves,standardize the management from the system,improve the management level and responsibility of the management personnel,and encourage technological innovation provide the management method support for ensuring the longterm development of the enterprise,improving the working efficiency and enhancing the economic benefits of the enterprise.
    Optimization and Numerical Simulation Analysis of Deep Shaft Excavation Construction Technology
    CHENG Li WANG Xi
    2020, 36(09):  80-84. 
    Asbtract ( 85 )   PDF (4035KB) ( 75 )  
    Related Articles | Metrics
    In the process of deep shaft excavation,with the increase of excavation depth,the phenomenon of stress concentration of surrounding rock becomes more and more obvious,which easily leads to the instability of surrounding rock and the cracking or destruction of lining structure of shaft wall.In order to fully release the stress and displacement of surrounding rock during the excavation of the shaft,the construction process of "three excavation and one masonry" was proposed in Xincheng gold mine of -930 m deep shaft construction,and compared with the original construction technology of "one excavation and one masonry".The results show that:①In the improved technology,the surrounding rock pressure is effectively released,and the safety coefficient of lining is significantly improved,which is conducive to the stability of deep shaft;②Due to the change of construction technology,the exposed area of the surrounding rock of the shaft increases,resulting in the greater stress of the shaft lining than that of the original process lining.Therefore,the site construction technology transformation should be gradually realized to avoid local stress concentration.
    Application Situation and Development Trend of Safety System Engineering in China in Recent 10 Years
    XIAO Yigai DENG Hongwei
    2020, 36(09):  85-90. 
    Asbtract ( 93 )   PDF (1396KB) ( 80 )  
    Related Articles | Metrics
    Safety system engineering is an interdisciplinary subject developed based on system engineering,covering many disciplines such as economy,management,system engineering,etc.Its development is a dynamic process.In order to study the application and development trend of safety system engineering in China in recent ten years,Based on bibliometrics,this paper makes a search and analysis on the literature of safety system engineering of public database (CNKI) in latest ten years (20102019) with the theme of "safety evaluation,safety assessment,safety management,risk management,risk assessment,risk analysis,risk evaluation and risk control",and analyzes the application situation and development trend of safety system engineering,and makes a statistical analysis of the research methods of safety system.According to the statistical analysis of literature,the main application of safety system engineering in China is safety evaluation and management,risk assessment and management,and the main method is safety evaluation method.According to the current situation of discipline development,the author puts forward the methodology research of safety system,optimization of the system method,and the development direction of system simulation and analysis.Applies the safety system engineering to the design of engineering project extensively,and provides the basis for project decision and risk control,and finally achieves the goal of system optimization.
    Optimum Practice of Exploitation Project Scheme for Deep Ore Body in Liguanji Iron Mine
    WU Chungang
    2020, 36(09):  91. 
    Asbtract ( 72 )   PDF (1271KB) ( 91 )  
    Related Articles | Metrics
    Based on the detailed introduction of the firstphase system engineering,it is proposed to carry out deep exploitation project construction to achieve the purpose of increasing productivity.For this purpose,several schemes are compared.After technical and economic demonstrations,the seamless docking scheme between beltinclined mine transportation and the firstphase crushed lower ore bin is finally determined,which solves the problem of secondary transportation of deep mine,saves costs and achieves ideal results.The construction of deep exploitation project provides a good example for other similar projects.
    Experimental Study on Construction Technology of High Level Chamber Cutting Raise in Zhangzhuang Iron Mine
    SUN Yongmao ZHANG Qiang TIAN Qizhi
    2020, 36(09):  94-96. 
    Asbtract ( 102 )   PDF (1120KB) ( 80 )  
    Related Articles | Metrics
    The designed mining method of Zhangzhuang Iron Mine is backfilling after blasting with large diameter and deep drilling holes.In order to maximize the performance of mining equipments,reduce the amount of drifting,and improve the mining efficiency,the height of the mining level has been raised from the original 60m to 90m through a series of technical breakthroughs.As the initial compensation space and the free surface of blasting mining ,blasting cutting raise construction technology is the key factors influencing the high level of stope blasting mining effect,the construction quality directly decide if the chamber blasting mining production can run smoothly,and the secondary processing when fail in the construction cost much and at the same time will bring potential safety hazard.Zhangzhuang Iron Mine face the circumstances of less reliable experience for reference,had to take the contrast test with limited resouces.The method of safe,low cost and practicable determines the final plan,which laid a foundation for Zhangzhuang Iron Mine to be safe with stable production,at the same time,research results can provide reference to some large underground mines.
    23 Optimization Application of Smooth Blasting in Dahongshan Iron Mine Roadway Construction
    XU Gang ZUO Dengpeng HU Yanfang
    2020, 36(09):  97-99. 
    Asbtract ( 113 )   PDF (1387KB) ( 80 )  
    Related Articles | Metrics
    The phenomenon of overexcavation and underexcavation of ordinary blasting tunnels is obvious,and the surrounding rock is seriously damaged,which makes the roadway roof and side siding management (prying and supporting) more difficult,and the safety of the roof slab is threatened.In order to effectively curb the hidden dangers of roof collapse and reduce the cost of roadway construction and maintenance,the application of smooth blasting can effectively control the surrounding contours and maintain the stability of the surrounding rock.In the actual construction of Dahongshan Iron Mine,the blasting parameters are continuously optimized and the roof collapses.The hidden dangers of partial favoring have been greatly reduced,which effectively reduces the risk of safety management and control,and at the same time reduces the engineering cost,thereby creating better economic and social benefits.
    Research on the Properties of Rare Earth Ore and the Design of Beneficiation Process in Xixia County,Henan Province
    WANG Yushu SUN Jingmin ZHOU Jiaohua LI Ronggai ZHAO Yixing
    2020, 36(09):  106-109. 
    Asbtract ( 131 )   PDF (7791KB) ( 78 )  
    Related Articles | Metrics
    In order to develop and utilize the rare earth ore found in Xixia County Henan Province,the properties of the ore and the processing technology were studied.The mineral type,ore type and occurrence state of the rare earth ore are verified,and the ore dressing technology suitable for the ore is preliminarily determined by the analysis of ore composition,and the ore electability is determined by the analysis of the target mineral imbedding.Based on the above research,the technological process of magnetic separation pretreatmentcoarse concentrate flotation was determined by comparing different processes,and the separation indexes of REO grade and recovery of open circuit concentrate were 62.44% and 64.94% respectively.
    Experimental Study on Comprehensive Recovery and Utilization with Sulphurbearing Magnetite
    GONG Zheyan
    2020, 36(09):  110-113. 
    Asbtract ( 76 )   PDF (1022KB) ( 77 )  
    Related Articles | Metrics
    Aiming at the magnet ore containing high sulphur (3.39%),magnetic separation cause iron concentrate containing excess sulfur,experiment study of sulfur reduction iron separation and comprehensive recovery of associated valuable components was conducted,the final recommendation flotation and magnetic separation combined process,obtained the grade of copper 13.30%,the gold grade of 4.25 g/t,silver grade is 107 g/t,copper recovery rate of 51.25% qualified copper concentrate;Qualified sulfur concentrate with sulfur grade of 29.60% and sulfur recovery rate of 79.74%;A qualified iron concentrate with 67.05% full iron grade,0.16% sulfur content and 62.00% full iron recovery; The process flow is reasonable,the sulfur content in iron concentrate can be reduced effectively by flotation,and copper and sulfur are recovered synthetically,which improves the economic value of the mine.
    Experimental Study on Flotation of a Complex Copperleadzinc Ore in Guangdong
    LI Dan CHEN Tao
    2020, 36(09):  114-119. 
    Asbtract ( 67 )   PDF (1541KB) ( 82 )  
    Related Articles | Metrics
    It is difficult to separate copper,lead and zinc minerals from a complex copperleadzinc ore in Guangdong Province because of their fine inlay size and mutual inclusion.In order to solve this problem,the process of flotation zinc separation of copper and lead is adopted.Results indicated that,when selecting copper,FK1 and DS can be used to suppress lead and zinc,which can effectively solve the problem of mutual inclusion of concentrate.Under the condition of high alkali technology,the preferential flotation process of copper first followed by zinc is adopted.The copper concentrate with copper grade of 21.10%,recovery rate of 80.88% and total lead and zinc content of 10.23% can be obtained after coarse copper and lead are ground and cleaning for two times,which meet the requirements of the fourth grade copper concentrate.The zinc concentrate with zinc grade of 52.17% and recovery of 92.78% was obtained by using one roughing two cleaning two scavenging process to treat copper tailings.All the agents used in the test are conventional agents.The test process is simple in structure and easy to be carried out on site,so it can be used as the basis for field reconstruction.
    Experimental Study on a Low Grade Nickel Ore with High Magnesium
    WANG Li XIE Jie HU Chunmei QIN Lei
    2020, 36(09):  120-123. 
    Asbtract ( 67 )   PDF (1133KB) ( 82 )  
    Related Articles | Metrics
    In order to solve the problem of sludge in the separation of a lowgrade,highmud and highmagnesium refractory nickel sulfide ore in Gansu province,based on the study of process mineralogy,a preflotation deslimsand flotation process was adopted to recover nickel,which effectively reduced the interference of highmagnesium argillaceous minerals on nickel flotation.The nickel concentrate 1 obtained by the closedcircuit process was containing 2.95% nickel and the nickel recovery was 4.62%.Nickel concentrate 2 contains 5.85% nickel and the recovery of nickel is 77.38%.The total nickel recovery was 82.00%.The research results have reference significance for the development and utilization of high magnesium and low grade nickel sulfide resources.
    Experimental Study on Desulfurization of an Iron Oxide Ore in Yunnan
    XIAO Dongsheng LI Yunpeng WANG Dezheng RAN Yinhua
    2020, 36(09):  124-126. 
    Asbtract ( 50 )   PDF (867KB) ( 78 )  
    Related Articles | Metrics
    The main iron mineral of an iron oxide ore in Yunnan is hematite,the grade of iron is 4226%,but the content of impurity S is higher,that is 196%.The sulfur in the ore is mainly in the form of sulfate,which forms barite with barium.In order to make full use of mineral resources,aiming at the problem of high sulfur content in the ore,the experimental study on desulfurization by mineral processing was carried out.The experimental results show that the iron concentrate containing 014% S and 5278% Fe can be obtained by reverse flotation with one roughing and two cleaning,and the recovery of S is 9286%.The desulfurization effect is better.It provides a technical basis for desulfurization of the ore by mineral processing.
    Copper Separation Test of a Copper Smelting Slag in Zambia
    WANG Yu
    2020, 36(09):  127-129. 
    Asbtract ( 68 )   PDF (927KB) ( 81 )  
    Related Articles | Metrics
    In order to efficiently develop and utilize a copper smelting slag in Zambia,takes a copper smelting slag in Zambia as the research object,and through the analysis of the sample chemical composition and process mineralogy characteristics,the copper recovery by flotation method is determined.The flotation reagent system was determined by using xanthate as collector,T336 as foaming agent,sodium sulphide and sodium silicate as adjusting agent.In the end,the samples were processed by the closedcircuit flotation process of one roughing,three cleaning two scavenging,middlings was returned in order to obtain the copper concentrate with a copper grade of 17.32% and a recovery rate of 82.78%.The experiment provides a useful reference for the beneficiation and treatment of this type of copper smelting slag,and the economic benefit is remarkable.
    Application of Column Machine Combined Lead Separation Process in Qixiashan LeadZinc Mine
    FAN Xun WANG Chao RUI Kai CHENG Rufeng
    2020, 36(09):  130-133. 
    Asbtract ( 59 )   PDF (940KB) ( 83 )  
    Related Articles | Metrics
    Improve Gold Grade of Concentrate and Realize Reduction of Cyanide Residue from Liaoning
    WANG Ping ZHAO Fucai LI Yuxi DOU Na LI Lingzhi
    2020, 36(09):  137-138. 
    Asbtract ( 60 )   PDF (956KB) ( 80 )  
    Related Articles | Metrics
    Study on the Occurrence State of a HighAl Limonite Abroad
    ZHU Xiali QIN Caixia QIN Lina WANG Caihong
    2020, 36(09):  139-141. 
    Asbtract ( 59 )   PDF (1562KB) ( 86 )  
    Related Articles | Metrics
    Beneficiation Test of a LowGrade Refractory Magnetite Ore
    LI Liang LI Xiaobo XU Baojin
    2020, 36(09):  142-144. 
    Asbtract ( 66 )   PDF (1155KB) ( 94 )  
    Related Articles | Metrics
    Study on Process for Reconcentration of Lean Magnetite Tailings
    LIU Xingquan CHEN Xiaoyan SUN Jingxin CAI Haihui
    2020, 36(09):  148-149. 
    Asbtract ( 64 )   PDF (1767KB) ( 90 )  
    Related Articles | Metrics
    Study on Process Mineralogy and Beneficiation of a High Phosphorus and Lean Magnetite Ore
    MENG Wenxiang JIANG Feng PANG Xuewu
    2020, 36(09):  155-156. 
    Asbtract ( 68 )   PDF (1997KB) ( 74 )  
    Related Articles | Metrics
    Optimization Test Research on Grinding System of Lilou Iron Mine
    LUO Guangming
    2020, 36(09):  157-158. 
    Asbtract ( 60 )   PDF (1743KB) ( 77 )  
    Related Articles | Metrics
    Study on the Comprehensive Utilization Method and Process of a Complex Coassociated Ludwigite
    DAI Yingqiu ZHOU Hongqiang
    2020, 36(09):  159-161. 
    Asbtract ( 123 )   PDF (2243KB) ( 84 )  
    Related Articles | Metrics
    Study on the Production of High Grade Rare Earth Concentrate in a Factory
    XU Junshan ZHANG Yue ZHAO Qidong DING Jie
    2020, 36(09):  166-167. 
    Asbtract ( 83 )   PDF (1220KB) ( 83 )  
    Related Articles | Metrics
    Application of Intelligent Loading and Unloading Truck System in Storage and Transportation of Civil Explosive Products
    ZHANG Caolin TANG Jiansong
    2020, 36(09):  170-172. 
    Asbtract ( 62 )   PDF (1343KB) ( 88 )  
    Related Articles | Metrics
    The Civil Explosive Production Enterprise Automation degree is low,the personnel control request is higher.In order to satisfy the policy of noman,fewman and reduce the cost,the intelligent transformation of the transportation link of the loading and unloading truck is carried out,and the intelligent loading and unloading truck system is introduced.Through the analysis of the layout of the existing loading,unloading and transportation links,the system flow mode is designed as a whole,which forms the warehousing,logistics and transportation system with the characteristics of the civil explosive industry and optimizes the existing management mode,some key technical problems,such as the correspondence between the pallet information and the sequence code of the public security record system,the camera identification of the intelligent forklift truck,etc.An intelligent loading system with industry demonstration effect is established.The results show that after the system is applied in a civil explosive enterprise,three workers are cut down in loading,unloading and transportation,the economic benefit is increased by 40% ,and the enterprise intelligence level is raised to a new level.
    Development and Application of Gas Drilling Maintenance Device in Soft Coal Seam in Holsinghe Coal Mine
    SHEN Zhongsheng LIU Mingyi
    2020, 36(09):  173-176. 
    Asbtract ( 51 )   PDF (1712KB) ( 81 )  
    Related Articles | Metrics
    In order to effectively solve the problem of hole plugging and hole collapse in the gas drainage hole in the soft coal seam of holsingh coal mine,a kind of maintenance device for the stability of the gas drainage hole is developed,which is mainly composed of the coal seam gas collection system,the rotatable screen cleaning system,the gas drainage power system and the stable system,which can realize the stability maintenance of the gas drainage holes with different diameters,and has been successfully carried out Field measurement and application.The results show that after the support treatment of the maintenance device,the borehole deformation is significantly reduced.According to the given expression of the borehole deformation maintenance efficiency,the borehole maintenance efficiency is about 30%.After the maintenance treatment,the borehole gas emission speed,the total amount of emission and the effective drainage time are increased.Compared with the non maintenance treatment,the total amount of gas emission is increased by more than 20%,and the effective drainage time is increased about four days.
    Applicability Verification of Hydraulic Support for Inclined Thick Coal Seam in Dongxia Coal Mine
    LIU Zhiwen NIU Jiasheng GAO Jun DA Guozhi
    2020, 36(09):  177-180. 
    Asbtract ( 83 )   PDF (1273KB) ( 76 )  
    Related Articles | Metrics
    In view of the phenomenon of equipment sliding during the mining of inclined thick coal seam in Dongxia coal mine,taking 352192 fullymechanized face as an example,based on the filed observation data,the stress of the hydraulic support is analyzed,which provides a theoretical basis for the selection of the appropriate hydraulic support in 352192 working face.Results show that: The average cycle end resistance of the supports on the lower crossheading side is less than that on the upper crossheading side,the supports management on the lower crossheading side should be strengthened.Most of the working resistance of the supports are nonnormal distribution and work well,the ZF6300/19/30 hydraulic support selected on site can meet the support requirements.
    Industrial Application of a New Type of Vertical Magnetic Field Screening Machine in an Iron Mine in Hebei
    LU Weitao DONG Dong ZHANG Yingxin
    2020, 36(09):  181-182. 
    Asbtract ( 67 )   PDF (1255KB) ( 77 )  
    Related Articles | Metrics
    The Application of Transportation Equipment in Laying LongDistance Heavy Armored Cables on Track Level Roadway
    FANG Zhenyu WANG Qinghe LIU Xinyun REN Jiaze
    2020, 36(09):  183-184. 
    Asbtract ( 79 )   PDF (1353KB) ( 85 )  
    Related Articles | Metrics
    Application of a New Type of Skid Protection Device in Mine
    WANG Rong WANG Benzhi YANG Xiaojiang ZHANG Jinpeng
    2020, 36(09):  185-186. 
    Asbtract ( 81 )   PDF (1301KB) ( 83 )  
    Related Articles | Metrics
    Ventilation System Transformation Scheme Optimization by Multiobjective Decision in Gaofeng Mine
    ZHAO Yuanyuan
    2020, 36(09):  187-190. 
    Asbtract ( 85 )   PDF (1312KB) ( 80 )  
    Related Articles | Metrics
    In order to solve the difficult problem of optimizing the ventilation system reform plan of Gaofeng mine,taking the optimization and transformation of ventilation system in Gaofeng mine as the research background,numerical simulation and mathematical analysis were used to optimize the ventilation system transformation scheme.Firstly,Ventsim software was used to solve the ventilation network of the three transformation schemes,and the characteristic parameter values of the ventilation system were obtained.On this basis,the evaluation index system of ventilation system transformation scheme optimization in Gaofeng mine was constructed,and the game theory is introduced to combine the subjective weight and objective weight of each index determined by DAHP method and entropy weight method,so as to obtain the comprehensive weight value of each index.Finally,the highest integral method in the multiobjective decision method is used to optimize the three schemes,and the third scheme is determined to be the optimal scheme,which provides guidance for the optimization and transformation of ventilation system in Gaofeng mine.
    Comparative Study on the Structural Complexity and Water Inrush Risk Zones in Mining Areas of Dongtan Coal Mine
    HOU Junhua MENG Fanzhen FENG Lushun
    2020, 36(09):  191-194. 
    Asbtract ( 93 )   PDF (1685KB) ( 83 )  
    Related Articles | Metrics
    In order to research the risk of water inrush from coal floor of Shanxi formation No.3 coal seam in No.5 and 7 mining areas in,according to the data of geology,hydrogeology,fault and borehole of the research area,the fault distribution characteristics of the research area are systematically analyzed.On this basis,fractal method and water inrush coefficient method are used to study the fault structure complexity and water inrush risk in No.5 and 7 mining areas.The results show that the evaluation results have a good match between the fractal method and water inrush coefficient method although the calculation principle and quantization parameters of the two methods are different.It is concluded that the coal seam floor in the No.5 and 7 mining area has a high fractal dimension in the northeast,complicated geological structure,and large water inrush coefficient,which should belong to the danger zone of water inrush,the southeast area belongs to the relative danger zone of water inrush,and the west area belongs to the safety zone.The results of this study have important reference value for the safety belt pressure excavation and water hazard prevention and control in No.5 and 7 mining areas.
    Analysis of Safe Production Conditions and Optimization of Safety Technical Measures in Hemushan Iron Mine
    LI Guoping HE Hongtao
    2020, 36(09):  195-198. 
    Asbtract ( 61 )   PDF (1402KB) ( 85 )  
    Related Articles | Metrics
    With the gradual mining of the Hemushan Iron Mine to the production reduction period,the safety production pressure brought by the mining of the mine suddenly increased.Provide theoretical guidance for the next stage of safety production in Hemushan Iron Mine.By collecting and studying the typical annual safety accidents,the number and distribution of accidents are summarized,the analysis of safety production conditions and the optimization of safety measures are analyzed.The analysis results are: ①The roof falling accident accounted for 72.97% of the total accidents of the year,which was the main safety accident of Hemushan Iron Mine in 2019(-215 m and -262.5 m stratification are 10 times).The annual accident rate of 10,000 tons is 0.36 times;③The next year (2020) the security situation is more severe,more strict safety production technology and Management measures to ensure safe mining.
    Gas Control Technology of "U" Ventilation Face in Liyazhuang Coal Mine
    HOU Wenguang
    2020, 36(09):  199-201. 
    Asbtract ( 86 )   PDF (2122KB) ( 93 )  
    Related Articles | Metrics
    Aiming at the problems of high gas concentration and difficult management in the upper corner of "U" ventilation face in high gas mine,Liyazhuang coal mine has carried out the optimization analysis of coal seam extraction and the research of fracture zone extraction。Through improving the sealing depth,joint hole technology,pipeline connection mode,etc,the concentration of borehole extraction decreased from 4 months to 9%,and increased to 19% after 10 months。By adjusting the layout of the holes in the fracture zone,optimizing the arrangement of the holes and adopting the technology of protecting the holes with the lower screen pipe,the maximum net flow of gas drainage in the drilling field of fracture zone is 13.6 m3/min,the average net flow of gas drainage is 8 m3/min,and the total net flow of gas drainage in the two drilling fields is more than 13 m3/min。The gas drainage in the fracture zone of high drainage roadway and high level drilling field is cancelled in the working face,and the average gas concentration in the upper corner and return air flow is controlled below 0.5% and 0.4% respectively.
    Cause and Stability Evaluation of the Jinxi ThreeFour Groups Collapse in Longli,Guizhou
    LONG Zhongfu XU Pengfei LI Yantao
    2020, 36(09):  202-207. 
    Asbtract ( 71 )   PDF (2121KB) ( 86 )  
    Related Articles | Metrics
    Xima Town is the highest altitude and most complex landform in Longli County,and geological disasters occur frequently.In March 2018,after the field investigation by professional and technical personnel,the third and fourth groups of Jinxi Village,Longli,Guizhou were included in the hidden danger points of the collapse.The basic characteristics,formation reasons,and stability of the collapse point are representative in the area.In order to evaluate and control the collapse point,through the investigation and research on the regional geological characteristics of the collapse of the third and fourth groups of Jinxi Village and the basic characteristics of the dangerous rock mass,the cause of the collapse at this point is analyzed,and its stability is evaluated,and appropriate prevention and control are proposed Measures.To provide suggestions for the prevention and control of geological disasters in the area,there is a certain reference value.
    Early Monitoring of Spontaneous Combustion in Tianmashan Sulfur Gold Mine
    HAN Lihu
    2020, 36(09):  208-211. 
    Asbtract ( 117 )   PDF (1336KB) ( 74 )  
    Related Articles | Metrics
    With the exploitation of deep mineral resources,the spontaneous combustion of sulphide deposits is a major problem affecting the safety of underground production.Measuring the temperature change of ore itself is one of the important parameters to predict ore spontaneous combustion.Firstly,the principle of infrared thermometer is described,and then the infrared thermometer is used to carry out experiments on powder heap,large rhombic ore and small conical ore heap.The main purpose of this paper is to determine the relationship between the temperature of different points on the surface of the three kinds of ore heap with distance.The experimental results show that the error of powder measurement has nothing to do with the distance,and the errors of large and small blocks are between 10cm and 40cm and from 50cm to 70cm,respectively.The experimental results provide reliable theoretical data for field detection and the establishment of prediction model in the future.
    Cause Analysis and Evaluation of High Gas Mine Fire
    PENG Zhihao ZHU Jie
    2020, 36(09):  212-214. 
    Asbtract ( 90 )   PDF (1240KB) ( 82 )  
    Related Articles | Metrics
    In order to effectively prevent all kinds of losses caused by high gas mine fire,the analytic hierarchy process (ahp) and prerisk analysis method were used to evaluate the risk of high gas mine fire.Firstly,the hierarchical structure model of gas accident risk analysis in highgas mine is constructed.Then the method of combining quantitative calculation and qualitative analysis is used to calculate the weight of all evaluation indexes of gas accident in highgas mine,and the relatively high weight evaluation indexes are obtained.Finally,the author puts forward specific corrective measures for each index by using the preliminary risk analysis method.According to the analysis results,it can be seen that the equipment factor is the highest priority index,which also puts forward the focus of work and specific preventive measures for highgas mine fire.
    Analysis of the Influence of Excavation Blasting in a Tunnel on the Safety of Surrounding Residential Buildings
    LI Hanwang YI Haibao WANG Yu LI Longfu
    2020, 36(09):  215-217. 
    Asbtract ( 92 )   PDF (1462KB) ( 75 )  
    Related Articles | Metrics
    In order to ensure the safety of the surrounding houses during the excavation and blasting of a tunnel,the impact of blasting vibration and blasting flying rock on the safety of residential buildings is analyzed.When the maximum blasting charge of tunnel excavation section is controlled within 38 kg,the blasting vibration will not cause damage to the surrounding residential buildings;by strictly controlling the single section charge and the total initiating charge,the blocking length and quality can be guaranteed,and the blasting safety warning work can be strengthened,so as to avoid the damage to the residential buildings caused by blasting flying stones.Finally,the control measures of blasting construction to ensure the safety of residential buildings are put forward to provide guidance for the safety of tunnel excavation blasting.
    Stability Analysis of the Present Waste Dump of a Large Mine
    WANG Jian
    2020, 36(09):  218-220. 
    Asbtract ( 211 )   PDF (1257KB) ( 81 )  
    Related Articles | Metrics
    With the development of open pit mining for many years,some waste dumps are out of service,so how to close them safely has become the task that the mine must complete.In order to accurately analyze the stability of a waste dump,this paper analyzes the influencing factors of the stability of the waste dump according to the site investigation and geotechnical exploration.The stability of the waste dump under different working conditions is calculated by geoslope.The calculation shows that the overall stability of the multistep waste dump is good,and the corresponding safety measures are put forward according to the defects of the waste dump,it provides a basis for the closure of waste dump.
    Investigation and Analysis of Occupational Hazards in an Enterprise
    YANG Junqing HE Qian ZHANG Yaqing WANG Yan YU Chaohai
    2020, 36(09):  221-221. 
    Asbtract ( 77 )   PDF (1922KB) ( 157 )  
    Related Articles | Metrics
    Problems that Should be Paid Attention to in Ecological Environment Restoration and Treatment of Majuangou Mining Area
    LI Zhiqiang
    2020, 36(09):  225-226. 
    Asbtract ( 59 )   PDF (1161KB) ( 92 )  
    Related Articles | Metrics
    There are many smallscale coal mines in Xinjiang.In recent years,a large number of smallscale coal mines have been integrated and closed,in order to improve the regional ecological environment,reduce soil erosion and eliminate geological disasters,according to the location of the mine,the rümqi County is funding the ecological restoration of the closed small coal mine in the Majuangou mining area,the ecological restoration of Majuangou mining area was carried out by adopting the following measures:"removal of buildings and hardened layers,treatment of high risk area,site leveling,Loess Cover,treatment of subsidence area,vegetation restoration,fencing and warning signs,and tending",at present,it has passed the acceptance test to realize the goal of beautifying and benign transformation of ecological environment in mining area.
    Water Treatment System Reforming of Wharf In Taochong Mining Company
    WANG Zheng
    2020, 36(09):  227-228. 
    Asbtract ( 59 )   PDF (1252KB) ( 80 )  
    Related Articles | Metrics
    Determination of Sulfur in Iron Ore by Coulometric Titration
    ZHU Lijie
    2020, 36(09):  235. 
    Asbtract ( 112 )   PDF (1223KB) ( 89 )  
    Related Articles | Metrics
    PGNAA Technology Applied Research on Online Detection of Copper Concentrate Elements and Moisture
    LIU Yongchao ZHANG Wei
    2020, 36(09):  237-239. 
    Asbtract ( 64 )   PDF (1375KB) ( 97 )  
    Related Articles | Metrics
    Application of Elutriation Choiceness Machine in Heshangqiao Concentrator
    HU Cheng JIANG Fengxiang ZOU Zongbin
    2020, 36(09):  240-241. 
    Asbtract ( 87 )   PDF (1305KB) ( 79 )  
    Related Articles | Metrics
    Deviation Inspection of Mineral Sampling System
    LI Yanqiu ZHANG Xichun ZHANG Qingjian GUAN Song LI Zhou
    2020, 36(09):  242-245. 
    Asbtract ( 69 )   PDF (1189KB) ( 72 )  
    Related Articles | Metrics
    Detection Technology of Leakage Point of Magnetic Separator Bottom Box
    ZHAO Qidong DING Jie XU Junshan
    2020, 36(09):  251-252. 
    Asbtract ( 54 )   PDF (1196KB) ( 84 )  
    Related Articles | Metrics
    Preliminary Study on the Identification of Iron Concentrate from Imported Solid Waste
    YUE Chunlei LIU Meidong YU Lingyun SONG Fei CAI Yan ZOU Wenwen
    2020, 36(09):  253-254. 
    Asbtract ( 109 )   PDF (1456KB) ( 75 )  
    Related Articles | Metrics