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    25 November 2018, Volume 34 Issue 11
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    Metallogenic Geological Conditions and Filling and Evolution Characteristics of Liyuan Rock Salt Mine in Puyang County,Henan Province
    LI Wan-Zhong, CHAI Zhong-Yang, LI Ke-Ying, SONG Wei
    2018, 34(11):  1-6. 
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    Liyuan Rock Salt Mine in Puyang County,Henan Province is located in Qianliyuan deposition center of tectonic unit of Dongpu Sag.Based on the achievements of the predecessors,the development of Es1-salt in the area is determined through seismic section comparison and 10 122 m borehole construction.The salt rocks of the Shahejie Formation of Paleogene can be divided into two major sedimentary cycles.The filling and evolution model of salt lake basin is enriched by the sedimentary characteristics and conditions of Es 1-salt deposit.According to the sedimentary sequence characteristics of salt rock-paste salt rock-paste mudstone-soil sandstone in vertical and lateral direction of Es1-salt and the characteristics of paleo-environment and salt-forming mechanism of Es 1-salt deposit,the study results show that the genesis of Liyuan Rock Salt Depoist belongs to shallow water evaporation genetic deposit.
    Geological Characteristics and Prospective Evaluation of Fujinchuan Rutile Deposit in Henan Province
    ZHANG Yang, WANG Yong, BAO Jun-Fan, JING Fei-Yuan, LIU Hao, HU Yu-Feng
    2018, 34(11):  7-12. 
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    In order to develop and utilize Fujinchuan Rutile Mine,the alrealy existed geological data of the mining area is analyzed comprehensively,and based on the results of field exploration,sample test and the comprehensive study results of some key sections,Fujinchuan Rutile Deposit is studied systematically from the five aspects of regional metallogenic geological background,geological characteristics of the mining area,geological characteristics of the deposit,rutile occurrence mode and deposit genesis,prospecting indicators of the deposit are summarized,besides that,comprehensive utilization prospective of the deposit is evaluated from the four aspects of metallogenic potential,ore processing technique,mining technical conditions of the deposit and mineral economic benefits.The study results indicated that:①Fujinchuan Rutile Deposit belongs to stratified volcanic rock deposit with large scale on Liushan-Yangce rutile ore belt,the deposit occurs in Middle Proterozoic Zuolaozhuang Formation,and it is controlled by strata and its distribution state is table;②the ore-bearing rocks is mainly for plagioclase amphibole schist and biotite plagioclase schist,and which is mainly for coarse fraction and amenable to ore dressing;③the metallogenic potential is great,the ore processing property is good,mining technical conditions of the deposit is simple,mineral economic benefits of the deposit is ideal,therefore,development and utilization perspective of the deposit is good.
    New Thought of the Transformation Development of the Subordinate Collective Enterprise of Nanshan Mine Based on Resources Integration
    YUAN Jin-Qiao
    2018, 34(11):  13-15. 
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    In order to solve the development problems of serious staff aging,backward production equipment,great employment pressure of the subordinate collective enterprise of Nanshan Mine,a new model of resources integration based on asset integration,business integration,personnel integration and management integtration is proposed.The practice resutls show that the business difficulties has been reversed,the harmonious and stable sitation in the mining area is maintained,the transformation development of the subordinate collective enterprise of Nanshan Mine is promoted,besides that,it can provide reliable reference for the similar mines.
    Uranium Metallogenic Characteristics and Prospecting Direction in Sheling Area of Xiazhuang Ore Field
    LUO Wen-Ming, HU Hao, LIU Jin-Bao, LI Xiao-Peng
    2018, 34(11):  21-28. 
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    Sheling Area is located in the northeastern Jiangxi Province of Xiazhuang Ore Field.In the stratum of the area,there is a series of Sinian-Cambrian metamorphic rocks,mainly revealing Yanshanian granites.The basic dykes are occurred by rock walls,and the fault structures are well developed,four structures such as NNE-trending,NEE-trending,NW-trending and EW-trending structures are developed in the area,the spatial distribution of uraniummineralized) orebodies are controlled by them.Sheling Uranium Depositconsist of 307,308 and 617 mineral occurrence) and 410,310 and 105 mineral occurrence are distributed in the area.The uranium mineralization is mainly occurred in Yanshanian fine unequal muscovite granites and medium coarse-grained porphyritic biotite granites.The uraniummineralized) orebodies are jointly controlled by fault structures,granite bodies,basic dykes and partial unconformity tectonic surface.Based on the geological results of the area,the uranium metallogenic geological characteristics and ore-controlling factors are discussed,besides that,the prospecting directions of Sheling Uranium Depositconsist of 307,308 and 617 mineral occurrence) and 410,310,and 105 mineral occurrence are stduied,so as to provide some reliable reference for the further uranium deposit prospecting work in Sheling Area.
    Metallogenic Mechanism of Kuanping Granite and Its Nearby Pegmatites Containing Rubidium in Eastern Qinling Mountains
    SONG Gong-She, YANG Wen-Bo, XU Feng, WU Peng
    2018, 34(11):  29-34. 
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    Kuanping Granite in Eastern Qinling Mountains is a calc alkaline granite formed after the collision of the Northern China Plate and Yangzi Plate.There are granitic pegmatite dikes occure in the granite or the strata near it.Through geochemical analysis,by using A/CNK-A/NK diagram and R1-R2 tectonic environment identification method of rare elements,the results show that the formation of granitic pegmatite dikes in the area has a certain inheritance with Kuanping Granite,and the granitic pegmatite dikes is the products of the late hydrothermal magmatic crystallization.Through the comparative anlysis of rare elements in rock mass and pegmatite dikes,ore polyelement analysis and semiquantitative spectrometric analysis,it is concluded that the enrichment of rubidium is closely related to the content of potassium in pegmatite,whitch can also provide the prospecting directions of pegmatite type rubidium deposit in Shandan Region in Eastern Qinling Mountains.
    Geological Characteristics and Ore-controlling Factors of Mulatong Pb-Zn Deposit,East Tibet
    FAN Bing-Liang, FENG De-Xin, BAI Tao
    2018, 34(11):  35-40. 
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    The tectonic position of Mulatong Deposit is located at the north eastern boundary of Bangong-Nujiang ophiolite belt,belonging to the northern part of Sanjiang Metallogenic Belt,and the metallogenic geological conditions are good in the area.The metallogenic geological background of the mining area is summarized from four aspects,such as strata,structure,magmatic rock,1∶50 000 stream sediment survey,and the anomalous characteristics of stream sediment survey and geochemical profile of the rocks are discussed,besides that,the ore-controlling factors are summarized.The study results show that:①Mulatong Pb-Zn Deposit has good prospecting potential,the intersection of the two groups of NW trending secondary faults in the area is the main ore-holding space;②favorable sections of the ore-forming zone has obvious abnormal combination of Ag,As,Cu,Pb,Sb,Sn and other elements,and the anomaly concentration center is more prominent;③there is no obvious genetic relation between the source of metallogenic materials ultrabasic rock blocks,but genetic relationship with the porphyrite dike and the source of metallogenic materials is existed;④silicification and ferritization are the important indirect prospecting indicators,and the Pb-Zn oremelt) outcrop and limonite ore belt in the surface of mining area are the direct prospecting indicators;⑤the ore shapes are mainly for invaded and veined,the ores with the shapes of crumby and breccia are mainly distributed in the fractured zone.The above study results related to Mulatong Pb-Zn Deposit can provide reliable reference for the further prospecting work of nonferrous metal mineral resources such as copper,lead and zinc in the east section of Bangong-Nujiang ophiolite belt.
    Coal Seam Physical Property and Coal Quality Characteristics of Jingang Coal Mine in Dazhou City, Sichuan Province
    LI Ming-Bin, WU Hao
    2018, 34(11):  41-45. 
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    Based on the surface exploration data and deep drilling results of Jingang coal mining area,structural characteristics of shallow and deep area of the mining area is summarized,and coalseam) physical property and coal quality characteristics in the mining area are also discussed.The study results show that:①main coal-bearing strata in the mining area are the fifthT3xj5) and seventhT3xj7) segment of Upper Triassic Xujiahe Group,and the seventh segmentT3xj7) of Xujiahe Group is primary coal-bearing strata in the mining area;②the coal seam in the area is mainly for bright coal,and followed by dark coal;③the average water content of coal seam is less than 0.9,average of Vdaf is 29.04%~33.36%,content of CO2 is not more than 2%,and the average sulfur content of coal seam is lower than that of 0.17%~0.19%, the sulfur desulfurization rate of floating coal is 67% and the desulfurization effect is medium.
    Establishment and Application of Geological Database Based on Surpac of a Metal Mine in Northwest China
    MENG Shao-Yong, DU Ting
    2018, 34(11):  46-50. 
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    Taking a metal mine in Northwest China as an example,the geological database is established and applied based on Surpac software.Through the establishment of mine geological database,about 36 000 geological datas of the mine are collated and collected effectively;through three-dimensional drilling modeling,hundreds of errors are found from the original datas,the error datas is corrected by data analogy.Based on the mine geological database established in this paper,statistical analysis of 10 572 sample segments are carried out.According to the analysis results,the average value of TFe grade in the original ore is close to 30.5％,besides that,the distribution characteristics of the other elements are described.The study results indicated that technical support of mining engineering,geological engineering,reserve estimation and ore grade dynamic management of the mine can be provided by establishing mine geological database.
    Surface Deformation Law of the First Mining face of Wangjiata Coal Mine
    ZHANG De-Min, WANG Rui
    2018, 34(11):  51-54. 
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    In order to study the surface movement law of Wangjiata Coal Mine,a surface movement observation station is established above No.3101 working face of the mine.Through observation and study,it reveals the distribution pattern of surface subsidence basin under the conditions of shallow mining depth and high speed of coal mining,besides that,the relevant rock movement parameters are obtained,which can provide reliable reference for rationally retaining coal pillars and guiding relocation of the surface of the mine.
    Design of the Mining Scheme of Slowly Inclined and Inclined Medium-thickness and Large-thickness Orebody of Zhangjiaxialou Iron Mine
    XING Zhi-Qiang
    2018, 34(11):  55-58. 
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    The orebody of Zhangjiaxialou Iron Mine is overlaid with large thickness Quaternary,the orebody belongs to difficult-mined orebody,and it is characterized by slowly inclined and inclined medium-thickness and large-thickness.In order to realize the goal of safety and high efficient mining of the orebody,the thickness of top pillar is calculated by using the method of ratio of thickness and span,beam theory of structural mechanics,empirical formula method and numerical simulation method,the optimal value is 24 m.Based on the above study results,in view of the orebody characteristics,the sublevel open stoping backfilling method based on open stoping approach ore removal and footwall vein ore removal is designed.Through economical and technical comparison,the open stoping approach ore removal scheme based on remote scraper is help for reducing engineering quantity of mining and cutting,and the mining cost per ton can be reduced more than 20％,its performance is better than the other ore removal method,therefore,the sublevel open stoping backfilling method based on open stoping approach ore removel can be regarded as the optimal mining method of the mine.
    Design of Three-step Stoping Scheme of the Hanging Wall Ore of Gushan Open-pit Stope of Anhui Province
    YANG Jian, YANG Jia-Mian, YIN Yu, LIU Yun-Qiu
    2018, 34(11):  59-61. 
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    According to the mining technical conditions and actual situations of the hanging wall ore of Gushan Open-pit Stope,three-step stoping technical scheme is proposed.By referring to the experiences of the similar mines,the two feasible mining technical schemes are designed,and the safety of them are analyzed by adopting numerical simulation method.Through comparison of the two mining schemes,the optimal one is selected,the orebodies in 1# and 2# ore vein roadway in the northeast of the stope are recovered effectively and safety,the ore recovery rate is 60％,ore dilution rate is 8%,the desired effects is obtained.
    Numerical simulation of the Subsequent Filling Mining of Large and Thick Steeply Inclined Orebodies of Sijiaying Iron Mine
    DI Hui-Chao, HU Wei-Wei
    2018, 34(11):  62-65. 
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    Aiming at the reliability of large-scale mining with Large and thick steeply inclined orebody, the southern district orebodies of Sijiaying Iron Mine are divided into two step bord which are mined at intervals by the open stoping with subsequent filling method,and one-step goaf filled with cement and two-step goaf filled with tailings.The recovery process is simulated numerically by using UDEC software.The results show that the pressure arch structure which arch loss is equal to the total length of recovery is found in the roof rock strata during the stoping and filling process of the mine house,and the filling body and ore pillar and surrounding rock are collaborative stability;at the same time,high stress concentration phenomenon occurs in the lower plate and upper plate of ore bodyabout 40~50 MPa),and in the consolidated packabout 15MPa), ant there are 0.5~2 m down and 0.2~0.28 m down respectively between the top of the stope and the earth's surface,in addition,a high pressure stress concentration zone and long belt main tensile stress zone are derived from the junction of the fourth system and the weathering belt and the weathering zone.The above study results further indicated that the roof and surrounding rock of upper and lower disk should be supported before mining,and the groundwater and fault fissure zone should be monitored as the roof and earth surface,so as to ensure the safety mining of the mine.
    Transition Mining Boundary Optimization from Slope Mining to Deep Concave Open-Pit Mining in Dumu Mining Area of Gongchangling Open-pit Mine
    WANG Yu-Chi
    2018, 34(11):  66-68. 
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    In view of the optimization scheme of the transition mining boundary from slope mining to deep and deep concave open-pit mining in Dumu Mining Area,the evaluation and calculation of the optimization step length of the cross section are carried out through the establishment of stope terrain database,drilling database and optimized initial model,derivative of the step length of each section is calculated,and the overall optimization step is given,so as conduct the overall optimization for iterative calculations and determine the overall optimal scheme.Based on the above study results and MATLAB software,the mining boundary optimization software of Dumu Mining Area is compiled.Through optimization calculation,the new optimization mining boundary is obtained,about 0.188 3×108 t mineral resources with high grade is increased,and the net profit is raised by 5.156 4 ×108 yuan,besides that,the mine serive time is increased by 7.5 a.
    Optimization of the Stope Structural Parameters of a Pb-Zn Mine in Inner Mongolia
    ZHOU Fu-Hua, XU Xue-Yuan, XU Hong-Wei
    2018, 34(11):  69-72. 
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    Sublevel open stoping backfilling mining method is used in a Pb-Zn mine in Inner Mongolia,in order to effectively analyze the stope stability under the two stope structure parameterslength of ore pilllar is 10 m and 15 m),taking the chamber located in 150 m level and within No.2 mining area as an example,coupled modeling by MIDAS-FLAC3D software is done and some related numerical simulation analysis is conducted,so as to study the mechanical response regularity of stress,displacement and plastice zone of the upper and lower of orebody and roof and floor of orebody under different ore pillar lengths.The study results show that the stope stability corresponding to the two schemes are both good,by considering the requirement of efficient mining,the optimal stope structural parameterslength of ore pillar is 10 m along the striking direction,length of stope is 40 m along the striking direction,width of stope is 20 m and height of section is 90 m) are given.
    Improving Measures of Stope Roof Failure Rate by Deep Hole Blasting of Dongguashan Copper Mine in Tongling City,Anhui Province
    ZHOU Qiang, TANG Kai
    2018, 34(11):  73-75. 
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    At present,large-dimater deep hole backfilling mining method is adopted in Dongguashan Copper Mine,the stope roof failure effects is not satisfactory,mining loss rate increases sharply.Through investigation,the causes of low stope roof failure rate of the mine is discussed.The results show that the problems such as poor hole layout,overmuch detonator segments and shorter of the reserved length of blasting holes orifice are existed in the process of stope roof failure by hole blasting technique.Besides that,the corresponding technical measures for improving stope roof failure rate is proposed by selecting the reasonable layout of blasting holes,adjucting charging structure of blasting holes and reducing detonator segments.The application results of the above technical measures show that the stope roof failure rate is improved from 93.7% to 98.9%,the parctice results is statisfactory,which can provide reliable for the similar mines.
    Safety Impact Analysis of a Copper Mine Underground Mining to the Surface Ancient Bronze Mine Site
    HE Cheng-Yao, FAN Qing, HUO Hong-Yan, FAN Jin-Cai
    2018, 34(11):  76-79. 
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    Due to the underground mining activities can change the natural gas field of the surrounding rock physical environment,surrounding rock produces displacement and deformation,in order to control the displacement of surrounding rock produced by mining activities,analyze the mechanical properties of the orebodies and surrounding rock,geological structure of rock mass,peripheral stress conditions and underground hydrological conditions of the orebodies and surrounding rock in the area that may be affected by mining activities,taking a copper mine as an example,the upward horizontal stratified cemented filling method and shallow hole shrinkage backfilling method are adopted to conduct the numerical simulation analysis of underground mining engineering of the mine,so as to study the influence of mining activities to the stability of surface ancient bronze mine site.The study results show that the stability of surrounding rock by using upward horizontal stratified cemented filling method is better than the one by using shallow hole shrinkage backfilling method,which is help for ensuring the safety of surface buildings in the mining area.
    Application of a New Monolithic Roadbed Construction Technique in Meishan Iron Mine
    XU Zhi-Cheng
    2018, 34(11):  80-83. 
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    There are two ore unloading lines in -420 m level of Meishan Iron Mine undertakes the transport work of iron ore,due to the heavy rolling of heavy vehicles for many years,the serious subsidence problem of the monolithic roadbed of the two ore unloading lines in -420 m level of the mine is existed,which directly leads to excessive resistance when the tipper pulls ores into ore unloading lines,the collision phenomens of the head of 25 t electric locomotive and horizontal supporting wheel and vertical supporting wheel in the entrance of ore unloading lines are appeared,and the problem of unsmooth ore unloading is existed when the heavy trucks into ore unloading lines.In serious cases,the heavy trucks may be drop at the entrance of ore unloading lines,besides that,the head of electric locomotive and hevay trucks may be stuck on ore unloading lines.Therefore,the safety application of ore unloading lines is affected and the production efficiency of iron ores of Meishan Iorn Mine is also affected.Through the optimization of blasting excavation method for the monolithic roadbed in the entrance of two ore unloading lines in -420 m level,a new monolithic roadbed construction technique is proposed and applied,the whole strength of the entrance zone of the monolithic roadbed of ore unloading lines is enhanced,the abvoe problems are solved effectively,the safety application of ore unloading lines is ensured,besides that,production efficiency of iron ores of the mine is improved.
    Remote Sensing Monitoring of Mineral Development Status in Jiangsu Province Based on High-resolution Remote Sensing Image
    CUI Yan-Mei, SU Yi-Ming, ZHAN Ya-Ting, ZHU Ye-Fei, LI Yin
    2018, 34(11):  84-88. 
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    In order to make full use of the technical advantages of remote sensing technique in the exploitation of mineral resources,the maintenance of mining order and the improvement of mine environment,taking multi-platform and high-resolution remote sensing data as the information source,firstly,the image data is preprocessed by several processing techniques,such as image gemetric registration and image fusion,then,the interpretation markes of several mine features are established,finally,according to the principal of from know to unknow,easy before hard and gradual interpretation,a variety of human-computer interactive information extraction methods are adopted appropriately,monitoring and analysis of the mineral development status in Jiangsu Province in 2016 are conducted.Through the comprehensive analysis of monitoring results and field verification,a total of 341 mining spots are obtained,among them,the number of suspected illegal mining spots is 78,the suspected illegal spots can be divided into suspected cross-border mining and suspected unlicensed mining,their numbers is 19 and 59 respectively.Based on the abvoe disucssion results,the temporal and spatial distribution regularities and dynamic characteristics of the mining spots are analyzed,so as to provide reliable reference for national mining administration,land and space use control.
    Research Progress of Fluorite Flotation Reagents
    YAO Yu-Yun, WANG Ya-Jing, FANG Zi-Chuan, MA Yan-Hong, 吕Meng-Jie , ZHANG Xin
    2018, 34(11):  89-93. 
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    Aiming at the problems of difficult flotation separation of fluorite ore,calcite and barite,the research progress of pH regulator,inhibitor and collector in fluorite ore flotation was introduced,and the type,performance and action mechanism of inhibitor and collector in flotation separation at room temperature were emphatically introduced.It was founded that the collector generally had the disadvantages of poor moderate temperature,dispersibility and acid and alkali resistance via researhing.It was proposed that the collector modification treatment and combination reagents were one of the effective ways to improve the flotation effect of fluorite ore,and low temperature resistant,high selectivity flotation reagents were the main direction of future research was indicated.
    Experiment on Processing Technology of a Fluorite Ore in Ejina Banner,Inner Mongolia
    LIU Rui-Bin, 吕Jie
    2018, 34(11):  94-98. 
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    In order to effectively improve the beneficiation indexes of a fluorite ore from Ejina Banner in Inner Mongolia,a large number of experimental studies had been carried out based on the study of the ore characteristics.The test determined that under the conditions of grinding fineness -0.074 mm 85%,water glass dosage of 1 000 g/t,oleic acid dosage of 120 g/t and pulp temperature of 35 ℃，fluorite concentrate with CaF2 grade of 98.22% and recovery rate of 88.33% was obtained via one roughing-four cleaning-one scavenging,middlings sequential returning flotation process flowsheet and ideal beneficiation indexes were achieved.
    Beneficiation Experiment on a Low Grade Pegmatite Type Spodumene Ore
    LIU Guang-Xue, DAI Ke-Wei, CHANG Xue-Yong, ZHAO Heng-Qin, WENG Cheng-Jun
    2018, 34(11):  99-102. 
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    In order to reduce the dressing production cost of a low grade pegmatite type spodumene,it predicted that using heavy medium separation process could discard nearly 70% coarse tailings and obtain spodumene concentrate with Li2O grade of 5.25%,recovery rate of 63.70%.For the sake of increasing the recovery rate of beneficiation,flotation experiment study was conducted by using collector EL,and spodumene concentrate with Li2O grade of 4.12%,recovery rate of 80.76% was obtained.To some extent，concentration discarding tailings process could eliminate the influence of slime on the concentration and reduce the meta loss in ore slime.The research results had certain significance to the technical transformation of the processing plant.
    Beneficiation Experiment on a Refractory Hematite in Yunnan Province
    JI Zhen-Ming
    2018, 34(11):  103-105. 
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    In order to provide technical bases for developing and utilizing a refractory hematite ore from Yunnan Province,beneficiation experiment of direct flotation firstly and then reverse flotation was conducted based on the process mineralogy of the ore.The results showed that at the grinding fineness of -0.074 mm 90.0%，direct flotation dispersant Na2CO3 dosage of 3 000 g/t，collector(the ratio of paraffin soap oxidated and tall oil was 1 to 1) dosage of 700 g/t，reverse flotation inhibitor starch dosage of 1 200 g/t，activator CaO dosage of 1 200 g/t，collector RA-715 dosage of 400 g/t，NaOH adjusting ore pulp pH=11.5,iron concentrate with grade of 60.50% and recovery rate of 80.95% was obtained via one roughing-one scavenging direct flotation and one roughing-one cleaning-three scavenging reverse flotation,middlings sequential returning combination flowsheet.
    Experiment on Comprehensive Utilization and Recovery of a Lead Pyrometallurgical Waste Slag
    CHEN Jian-Fu, CHEN Fa-Shang, ZHANG Li, CHEN Yu, TU You-Bing
    2018, 34(11):  106-109. 
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    Aiming at the problems of complex compositions and difficult recovery of polymetal in a lead pyrometallurgical waste slag,experiments of gravity separation,flotation,magnetic separation and magnetic separation-gravity separation were carried out respectively,and the comprehensive recovery indexes were compared and analyzed.The results showed that single gravity separation,flotation and magnetic separation process could not get better indexes.Gravity separation-magnetic separation combined process could get more reasonable products indexes.The iron concentrate grade was 55.47%,lead concentrate grade was 46.13%.Polymetal recovery of the lead waste slag was realized.
    PXRF Technology Application of Copper Ore Sample Grade Measure in Huogeqi Copper Mine
    LU Rui, CHEN He-Ping, JIANG Chao
    2018, 34(11):  110-114. 
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    Aiming at the problems that the ore sample assay with tedious process,long time could not guide the production quickly and accurately in Huogeqi copper mine dressing plant,Using portable X-ray fluorescence analyzer measured the standard ore sample quickly,but the results errors were larger considerably.Via studying the influences of measurement time,stability and frequency on results,It was founded that the measurement data were volatility and stability when the copper tailings sample was measured once for 30～45 s.The linear equation of the copper tailings sample measurement data and standard values were obtained by utilizing correlation analysis.After rapid calibration of the measurement data，the results could be used to guide production.The dressing plant production capacity was increased,and creating income and enhancing benefits were realized.
    Simulation Research on Vector Control System of New Type Mine Asynchronous Motor with Speed Sensorless
    LIU Zhi-Yuan, CHENG Xiao-Zhou
    2018, 34(11):  115-119. 
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    In order to improve the reliability and reduce the system cost of mine asynchronous motor in complex service environment,a speed sensorless vector control system for mine asynchronous motor was designed by combining the asynchronous motor vector control technology with the speed sensorless technology.This paper analyzed vector control technology and SV PWM modulation technology,introduced the idea of model reference self-adaptation into the design of speed sensorless,and simulated the designed system with MATLAB/Simulink simulation software.Simulation results showed that the designed speed sensorless vector control system had good static and dynamic characteristics。It stated that the speed sensorless vector control system has good application values in the field of mine motor control.
    Development of an Automatic Spot-welding Robotics for a Heavy Truck-wheel Hub Assembly
    TANG Da-Yong
    2018, 34(11):  120-123. 
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    Aiming at the problems of manual welding with low efficiency and unstable quality for truck-wheel hub assembly,the structural characteristics and welding requirements of a heavy truck-wheel hub assembly,a orthogonal coordinates type automatic spot-welding robotics was designed.It expounded the project design of the automatic spot-welding robotics body and the application of control system.The performance of the automatic spot-welding robotics was verified by field experiment and industrial test.It could provide a reference method for automatic welding of the heavy truck-wheel hub assembly.
    Design of Online Safety Monitoring and Management Platform of Tailings Pond in Liaoning Province
    HAO Zhe, ZHANG Liang
    2018, 34(11):  151-155. 
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    Aiming at the existing problems after the implementation of "Technical Code for Online Safety Monitoring System of Tailings Pond"GB 51108—2015),combining with field practice of the online monitoring projects of tailing pond in Liaoning Province,the tailings pond online safety monitoring and management platform is designed.The design route and overall structure of the online monitoring platform are established.The software composition of monitoring platform,central edition and enterprise version platform block diagram are built.The data synchronization method,system deployment and user access method are discussed.Large screen splicing system and multi-screen treatment method are discussed.The system platform can judgment the safety state of tailings operation scientifically,provide reliable technical guarantee for the supervision of on-site tailings pond, and can be used for the online monitoring projects of similar tailings pond.
    Applicaiton of Mobile Rock Drilling Machine Noise Controlling Room in an Underground Mine
    LIU Bin
    2018, 34(11):  156-158. 
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    Occupational noise deafness is a kind of hearing disorder characterized by sexual sounds formed by exposure to the productive noise over a long period of time during the working process.The time and intensity of exposure to noise,especially for the working yeares of noise are significantly related to occupational noise deafness.Taking an underground mine as the study example,the working noise of the underground rock drilling machine is treated by mobile noise controlling room,and the pecific technical parameters and functions of mobile noise controlling room are discussed.The field practice results show that the noise damage can be significantly reduced by using mobile noise controlling room,it can provide reliable reference for noise controlling of underground mines.
    Research Progress of Water Quality Monitoring Technique Based on Remote Sensing
    ZHANG Ke, ZHANG Kai, NIU Peng-Tao, GAO Lei
    2018, 34(11):  171-174. 
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    The significance of remote sensing techniqe in water quality monitoring is analyzed and the theoretical basis of using remote sensing technology to achieve water quality parameters is explained.Through analysis of the existing study results of water quality monitoring based on remote sensing technique in recent years,the advantages and disadvantages of three main water quality monitoring methodsmodel analysis method,semi-empirical analysis method and empirical analysis method) are summarized,the direct water quality parameters and indirect water quality parameters that can be acquired by using water monitoring technique based on remote sensing are discussed.Based on the above study results,the further development directions of water quality monitoring based on remote sensing is proposed.
    Mine Risk Evaluation Model of the Prediction of River Bank Breakage and Flooding of Embankments
    HU Su-An, HE Ying-Li, JIANG Bao-Yuan, YU Zi-Wen, GAO Yue
    2018, 34(11):  175-180. 
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    In order to evaluate the risk that the influx of flood from mines near the banks of rivers and lakes,river breaks and flood submerged subarea models are established respectively.Firstly,based on the one-dimensional hydrodynamic model of river and gradient-rupture coupling model,combing with the hydraulic parameters,such as flow rate and water level at the crevasse of the river embankment,the prediction model of river bank breakage is established;secondly,the influencing factors of the inundation flooding process are analyzed,and the weights of each influencing factors are obtained by using analytic hierarchy process,the floodwater submergence subarea model is obtained by combing the total value of the obstructive factors of the wellhead to the embankment sections,so as to evaluate the flood flooding risk caused by river bank breakage.Based on the flooding accident data of Shandong Xintai Coal Mine in 2007,the ArcGIS analysis of the risk zoning in the study area is conducted by using the above models.The analysis results is consistence to the actual situations,which show that the models established in this paper can be used to efficiently and effectively evaluate the flooding risk in the mines near the banks of rivers and lakes.
    Design and Practice of the Blasting Scheme in Super-large Area of Barun Iron Mine
    SHI Wen-Qiang, GU Chun-Lei, ZHANG Bo
    2018, 34(11):  181-184. 
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    Barun Iron Mine is the main raw material production base of Baotou Iron and Steel Group,but the existing large-area blasting technique can not meet the demand of Baotou Iron and Steel Group for iron and steel production.In order to improve the production capacity of the mine,based on the regional blasting,the scale of blasting area is further increased,the super-large area blasting technique is proposed.The length of the blasting area is 630 m,its width is 60~150 m,it is larger than the ordinary large blasting area in number of blasting holes,amount of primary charging and blasting range.By setting reasonable blasting parameters,charging structure and strengthening site construction management,the successful application of the super-large blasting technique in Barun Iron Mine is finally realized.The filed test data show that after taking the super-large blasting technique,the blasting vibration velocity is 1.018 9~2.736 9 cm/s,the block rate is 10%,the blasting impact is small,the blasting cost is 15％ lower than that of traditional blasting,10% lower than that of traditional blasting,13% lower than that of perforated meters,besides that,the equipment blasting avoidance time is reduced by 60％.The comprehensive analysis results indicated that application of the super-large blasting technique is help for improving the production capacity of Barun Iron Mine,reducing the unit cost of raw ore mining and achieving the purpose of decreasing cost and increasing efficiency of the mine.
    Governance Scheme of Slope Sliding of the Roadbed of a Highway Under Instability Stage
    LIN Yuan-Hang, ZHAO Wu-Kun
    2018, 34(11):  185-189. 
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    In view of the slop subsidence,local collaplse of the roadbed of a highway under the conditions of hevay rainfall,through the analysis of slope sliding mechanism,the causes of subsidence,collapse of the roadbed is discussed,so as to provide theoretical basis for slop governance.According to the relationship between difference rainfall duration and safety coefficience of slope stability,the slope destruction process is analyzed,and the slope instability stage is determined,the integrated governance scheme based on slope sliding and instability stage is proposed,besides that,the technical economic comparison of the governance scheme is done,so as to provide reliable reference for the treatment of slope instability of roadbed.
    Seepage Analysis and Stability Study of High and Steep Slope Dump under Long Duration Rainfall
    HAN Ya-Bing, CUI Xuan, GAN Hai-Kuo, LIU Xin-Xin
    2018, 34(11):  190-194. 
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    High Bench dumping process makes the dump presents a trendcy of high and steep slope,and rainfall is an important cause of inducing high and steep slope to slide.Taking the high and steep slope drainage field in a rainy area as an example,through the example of a high and steep slope dump which is in abundant rainfall area, seepage evolution regularity and stability analysis under long duration rainfall is done.The results show that:the higher the height of the dump,the smaller the influence of rainfall on the distribution of pore water pressure;the stability of slope is controlled by two sliding modes of deep layer and shallow layer in different rainfall periods;the decrease rate of anti-slip stability coefficient caused by rainfall is greater than the increase rate of safety coefficient after raining.
    Seepage Treatment of the Bottom of Subsidiary Dam of the Tailings of an Iorn Mine in Chengde City,Hebei Province
    SONG Yan-Li
    2018, 34(11):  195-198. 
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    Water seepage phenomenon appears at the bottom of subsidiary dam slope of the tailings of an iron mine in Chengde City,the safety risks is significant.Through geological exploration and water seepage causes analysis,the integrated measures such as overburden the slope surface by waste rocks,reducing dam slope gradient and setting seepage drainage facilities are proposed.The applications results of the above technical measures show that safety risks of the bottom of subsidiary dam is eliminated,safety of the subsidiary dam is guaranteed,which can provide reliable reference for the treatment of safety risks of the similar tailings.
    Integrated Gas Extration Technique of 2-105 Fully Comprehensive Caving Working Face in Hejin Tenghui Coal Industry
    GAO Xin-Ping
    2018, 34(11):  199-202. 
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    U-type ventilation method is used in 2-105 fully comprehensive caving working face in Hejin Tenghui Coal Industry,through the applicaiton of coal seam gas pre-drainage,extraction method by high location fissure boreholes and the "long-hole instead of roadway" gas extraction technique,so as to solve the operational and technical and difficulties of cross openning and sealing by using U+L ventilation method of the stoping working face.The practice resutls show that applicaiton of the integrated gas extration technique is not only reduce the roadway excavation,but also help for effectively reducing gas accumulation in the upper cornor of working face goaf under the gas extration operation with low negative pressure and large flow,compared with the other integrated gas extraction methods,the application prospective and economic benefits of "long-hole instead of roadway" gas extraction technique are both good.
    Optimization of the Ventilization System of Yindongpo Gold Mine in Tongbai County,Henan Province
    WU Leng-Jun, ZHOU Wei, LU Zhi-Yong, WANG Guang, SHAN Zheng-Hong, WANG Xin-Ming
    2018, 34(11):  203-205. 
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    Due to the influence of goaf air leakage of Yindongpo Gold Mine,the ventilation system stability is not reliable,therefore,the main surface fan of the east air shaft cannot effectively play the role of total return air of the ventilation system,the operation air flow direction is reversed,the heat dissipation of air compressor chamber in the middle production section results in local high temperature,the underground hot air and waste air cannot be discharged to the surface along the setting route.In order to solve the above problems in the ventilation system,based on the integrated optimization techniques of multiple station air pressure balance,optimum design of machine station and fan selection,the problems such as a large quantity of air leakage in goaf,Xiaogaojian shaft ventilation and production sections polluted by the heat source of underground air compressor chamber are solved effectively.