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Table of Content

    25 January 2019, Volume 35 Issue 01
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    Research and Application of Advanced Geological Prediction Technology for Bauxite Karst
    XING Xiu-Ju, JIANG Qi-Ping, WU Zheng-Fei
    2019, 35(01):  1-4. 
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    The karst development and the serious threat of Karst water damage in the Wachangping Bauxite Mine. The bauxite layer is a low-resistance medium in the case of a relatively high-resistance surrounding rock. A variety of geophysical methods have been tested. By designing a reasonable mine transient electromagnetic and radio wave perspective technique, the corresponding apparent resistivity contours are drawn. The cross-sectional view and the contour map of the electromagnetic wave absorption attenuation coefficient define the karst area inside the working face. The results show that the karst development area is a low-resistance reaction in the results of the transient electromagnetic method,and it is a high-absorption area of electromagnetic waves in the radio wave perspective results. The results of the two methods are consistent with the location of the Karst development, which can effectively evaluate the working surface.Karst development and its water-conducting condition.
    Gypsum Deposit Characteristics and Genetic Analysis of Dongzhuang in Sishui County,Shandong
    WANG Zi-Jie
    2019, 35(01):  5-0. 
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    Dongzhuang Gypsum Mine locates in the Sishui basin, it develops Paleogene system, and develops fully equipped with Bianqiao group, which is the second paragraph Bianqiao group for gypsum rock series. The rock assemblage of containing paste layer rock assemblage is glutenite、sandy clay and contain paste layer. It has nine cream containing layers and the relationship between the paste layer and other layers is show transition, it has no belt occurrence. The including ore seam in the mineral content is low (15%), the main ore type is gypsum, and can be divided into native gypsum and gypsum. The Dongzhuang deposit sedimented in the inland lagoon basin, as in the process of sedimentary, the water evaporating and CaSO4 concentration increasing, at the same time, the sedimentary clay class sedimenting, formed the clay rock gypsiferous deposits, which is the main ore deposit. This paper analyzes and researches the geological characteristics, ore quality and ore deposit genesis of the gypsum mine, and can provides reference and reference in the gypsum mine prospecting exploration.
    Water Filling Condition of Tonghui Mining Mine and Analysis of Water Inrush at the Bottom of Ore Body
    XIA De-Wei, WEI Hai-Tao, LENG Kun-Peng, LI Peng-Cheng, GUO Yi-Fei
    2019, 35(01):  10-13. 
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    In order to ensure the safety in the mining process of Tonghui Mining Co., Ltd., combined with the present mining situation, the water filling condition and the influence factors of the water inrush are analyzed. The water inrush coefficient method is used to evaluate the bottom floor of different mining depth, and the vertical zoning is carried out in the mining range of the mine body. The research shows that the karst fissure water in the Permian group of different gold groups is a major threat to mine mining, and fault and water conducting fissure zone are the main ways of water inrush accidents, and the main influencing factors of water inrush are the development degree and water pressure of the ore pressure disturbance zone, fault and fracture and fissure. The boundary value of the vertical safety division of the aquifers is 251 m and 422.19 m respectively. The water level is buried below the 422.19 m (10 middle section), and the water inrush accident will occur in the mining section.
    Research and Optimization on Seepage Prevention Technology of Manjiazhai Open-pit Slope
    MA Kai-Chuan
    2019, 35(01):  38-42. 
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    According to the analysis of the main factors affecting the slope of the mining area, the paper combines the characteristics of the poor lithologic physical and mechanical properties of the slope and the large area of the structure development and water catchment area, and puts forward the "test on the control of seepage prevention by net spray" and the treatment of "(LDPE) geomembrane slope anti seepage control". According to the optimization of the test results, the improvement measures are put forward, and the original strength of the rock slope is preserved to the maximum. According to the design slope characteristics, the slope is designed to adapt to the deformation of the slope. Through the construction of horizontal and dry laneway, the damage of water gushing to the slope is changed, the seepage water of the ground surface is quickly drained, the water level line of the slope is reduced, the stability of the slope is improved and the maintenance cost of the slope is reduced.
    Dynamic Time History Seismic Analysis on a Fine Tailings Dam in High Earthquake Region
    LI Jing, ZHANG Mo
    2019, 35(01):  43-47. 
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    In order to prevent liquefaction,which is dangerous to the stability of the tailings dam. Based on southwest high earthquake a fine grained tailings dam as an example, the fine grain of backfilling dynamic shear modulus and damping ratio, and related test parameters for foundation, according to the approximate artificial fitting of seismic wave field as the power input load, equivalent cyclic shear stress compared with anti liquefaction shear as the basis of liquefaction discrimination, with the help of the schedule stress by means of finite element method, the detailed analysis of the high earthquake liquefaction of fine grained tailings area and dynamic stability. The results show that the liquefaction area is mainly concentrated under the water level at the end of the reservoir. In dynamic stability coefficient is compared with the pseudo-static method, stability coefficient is small, only a seismic wave action and pseudo-static method to calculate the stability coefficient of basic quite, which also shows that dynamic time history method in analysis of tailings dam in high earthquake dynamic stability, more in line with the actual seismic dynamic process, and superior to the traditional pseudo-static method.
    Research on Integrated Construction Technology for Fast Supporting of Coal Roadway
    WANG Chuang-Ye, AN Shu-Feng
    2019, 35(01):  48-51. 
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    Faced with the difficulty of excavation and replacement in the case of thin coal seams, this paper advocates the strengthening of mechanized roadway technology research.On this, the author took the investigation and research on the excavation and construction of coal roadway with 22 top 206 working face in Shigetai Coal Mine. First, demonstrate the feasibility of the continuous mining machine's application on the 22 coal seam；Secondly,based on the FLAC3D of numerical simulation,the multi-factor analysis of the optimal empty top distance in the continuous coal mining machine is carried out. Finally, practical verification of the support design parameters derived from numerical simulation. The results of the study finally show that: 22 top 206 working face continuous mining machine for mining tunneling easier to play equipment efficiency, when the continuous shearer and bolting machine spacing operation 8m coal lane empty top distance easier to ensure the efficiency of excavation;Secondly, on-site measurement also shows that the roof subsidence of the roadway is controlled when the roof bolts are installed on the roof of the roadway and the two anchor cables (the ceiling sinks about 25 mm).
    Application of Small-scale Gravel Cement Filling in Transitional Production of a Copper Mine
    LIU Xun, WANG Guo-吕, GE Jian-Ping, ZHAO Feng, LIN Bing-Gui
    2019, 35(01):  52-55. 
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    Take a copper mine mining project as an example, during the construction of the scaled filling system, according to the geological data of the seam and combined with the current operational status of the production system, the high mobility and universal applicability of the miniaturized filling equipment are utilized in advance. The mining method in the transitional production period is flexibly adjusted to a small-scale two-step gravel cementation and filling method. While improving various economic indicators for mining, it has solved a series of safety and environmental issues in the process of mining, and has been widely promoted.
    Application of Hydraulic Fracturing Technology in "Three-hard" Coal Seam
    LI Guo-Ying, ZHANG Cheng-Xiang, YANG Yong
    2019, 35(01):  56-59. 
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    There are more and more dynamic disaster when the hard roof is broken, so the hyaraulic fracturing technology was used on the 1103 working face. It tested the ruslt by field observations, borehole imaging, micro-seismic monitoring, and compared with the effect of the bursting roof. It was found that the transverse fracturing radius was greater than 15 m, and the longitudinal fracturing radius was greater than 9 m when hydraulic pressure was more than 30 MPa and the time was more than 30 min, the average energy and total energy of microseismic evented dropped sharply when the work face was in the area of hydraulic fracturing, and the falling range was more than the burst area.
    Study on the Relationship Between the Content of Clay Particles and the Density of Debris Flow Based on PPR Model
    YAN Lin, HE Jian-Xin, YANG Hai-Hua
    2019, 35(01):  60-64. 
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    This paper details the relationship between the content of clay particles and the density of debris flow by projection pursuit regression analysis, and the kinetic mechanism of debris flow and the mechanism of particle suspension were analyzed. The results show that the average relative error of PPR model and polynomial model is 5.3% and 6.5%, respectively when the PPR model is simple-modeled, when the relative error is less than 20%,15%,10% and 5%, the rate of the PPR model increases by 39%,10.6%,23% and 24%.When using PPR reservation test analysis, compared with the polynomial model, the qualification rate of the modeling analysis group and the reservation test group was improved. In addition, there is a non-linear correlation between the content of clay particles and the density of debris flow. When the content of clay particles is less than 6.78%, the density of debris flow increases with the increase of the content of clay particles, and when the content of clay is more than 6.78%, the density of debris flow decreases with the increase of the content of clay particles. When the clay content is between 6%~10%, the average bulk density of debris flow is the largest and fluctuates between 2.05~2.20 g/cm3. This paper proves that the PPR model has obvious advantages over the polynomial model, its relative error is smaller, the regression fitting is stable, the analysis result accords with the kinetic energy mechanism of debris flow and the conclusion of particle suspension mechanism, and further illustrates that PPR model has more advantages in compatibility and quantitative information utilization.
    Research Progress of Kaolin Deironing and Whitening
    GUO Chun-Lei, WANG Wei-Wei, JIN Hai-Long, LI Qiang
    2019, 35(01):  96-101. 
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    It summarized the iron element occurrence state in kaolin,introduced the fundamental and research progress of deironing and whitening methods,and indicated that the iron element occurrence state in kaolin is the intrinsic factor of deciding whitening methods.Only adopting polytechnic deironing combination methods,the better deironing effects can be obtained.
    Research Progress of Gallium in Panzhihua Vanadium Titano-magnetite Ore
    LIU Jia-Yuan
    2019, 35(01):  102-105. 
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    Aiming at the problem of the gallium resource utilization in Panzhihua vanadium titano-magnetite ore,the gallium distribution,trend and utilization in Panzhihua vanadium titano-magnetite ore were researched.The results showed that the gallium resource utilization in Panzhihua ore was conducted by recycling gallium from extracted vanadium tailings slags and vanadium slags.The gallium resource recovery and utilization in chlorination slags that titanium tetrachloride production by molten salt chlorination method could be the development direction of gallium extraction.
    Optimization Experiment on the Flotation Process of a Containing Gold Ore
    HUANG Fa-Bo
    2019, 35(01):  106-110. 
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    Aiming at the problems of flotation process indicators deterioration generating beneficiation recovery rate slumped because deep ores properties changed,direct flotation and middlings flotation after regrinding tests were conducted.The tests determined the best technological parameters,optimized the beneficiation process,solved the problems of flotation indicators deterioration because of ores properties changing.The process indicators of gold concentrate with yield rate of 3.0%,gold grade of 87.91 g/t,gold recovery rate of 95.06% was obtained via the tests,which could lay a massy foundation for improving the enterprise economic benefits.
    Experiment on Beneficiation of an Iron Mine in Hebei Province
    WANG 二Feng, ZHANG Ying-Xin, DONG Dong, YU An-Zhou
    2019, 35(01):  111-114. 
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    Aiming at the problem of which a iron mine needed to provide technical supports for subsequent development and utilization,beneficiation test research was carried out.After comparing grinding-low intensity magnetic separation process with grinding-low intensity magnetic separation-magnetic screening process,grinding-low intensity magnetic separation-magnetic screening process was determined which could get better beneficiation indexes.Iron concentrate with yield rate of 77.08%,TFe grade of 67.34%,TFe recovery rate of 94.76% was obtained via raw ore grinding-low intensity magnetic separation-magnetic screening-magnetic screening middlings grinding-low intensity magnetic separation-magnetic screening scavenging process.Magnetic screening process played a pivotal role in the iron ore cleaning upgrading.
    Pipeline Transportation Research of Meishan Iron Mine Tailings
    BI Bing-Bing, HUANG Bao-Ping
    2019, 35(01):  115-118. 
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    Aiming at the security and stability problems of Meishan iron mine tailings transportation with high concentration and long distance,the tailings physical properties and pipeline transportation parameters were researched via clear water experiment and loop-pipe experiment.The law of Meishan iron mine tailings transportation with high concentration and long distance,the safe transportation concentration and flow velocity were obtained.Under the appropriate operation parameters,safe and economic tailings pulp transportation with high concentration and long distance could be realized.
    Acidification Potential of Waste Ores in Ganzhou City,Jiangxi Province
    ZHANG Yao, ZHANG Yong-Kang, LIU Yan, FENG Nai-Qi
    2019, 35(01):  119-122. 
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    In order to accurately evaluate the acid production potential of chats in Ganzhou,the net acid production test,the maximum net acid production potential test and the leaching test were carried out.The research results showed that about half of chats samples had acidification potentials,but the net acid production was less,the maximum production of H2SO4 was only 10 kg/t.The chats in Ganzhou with low content of sulphur were not completely acidated in the short term,but the heavy metal elements in the chats could be all dissolved out,in which the dissolving-out quantity of Cd、Pb、Zn、Hg and other heavy metal elements were exceeding and would polluted surroundings.
    Simulation and Computing of Lateral Aerodynamic Force on Hoisted Container with Rope Guide
    XU Chang-Lei
    2019, 35(01):  138-142. 
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    In order to study the distribution of air pressure in the shaft when the hoisted container with rope guide running , and get the lateral aerodynamic force, the process of hoisted container running in the shaft and the variation of air flow field are simulated by the computing software FLUENT. From the study, we can get that the air pressure distribution in X direction is approximately symmetrical, in Y direction changes intensely, and the force is inclined to sidewall before the ships meeting, changes intensely at meeting, and after meeting it returns to the state before meeting. Research shows that the steady aerodynamic force is the main factor to calculate the lateral displacement caused by air flow. The research can support the calculation of lateral displacement caused by air flow, and give a new way to determine the safety clearance in rope-guided shaft.
    Quantitative Evaluation on Water Inrush Risk from Floor of Coal Seam Under Pressure Mining
    LIU Kai-Xiang, NIU Chao, PENG Tao, DU Zhan-Shun, WU Zhong-Shan
    2019, 35(01):  180-184. 
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    In order to improve the accuracy of water inrush risk prediction of coal seam floor, according to the existing water inrush data of surrounding mines, the main control factors affecting water inrush of coal seam floor are analyzed. The water inrush risk of coal seam floor is predicted and evaluated by AHP vulnerability index method. The evaluation results are compared with the traditional water inrush coefficient method. It is considered that the vulnerability index method is more comprehensive in considering factors. The results of the evaluation are more precise and practical, which can be used as a supplement to the method of water inrush coefficient.
    New Ideas and Examples Verification for Safety Assessment in Non-coal Mine
    LI Quan-Ming, YANG Zhao, ZHANG Hong
    2019, 35(01):  185-188. 
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    In order to effectively curb the occurrence of non-coal mine heavy accidents and improve the safety risk management and control capabilities, a new method for non-coal mine safety risk assessment is proposed.This paper takes a stone material factory as an example to establish a non-coal mine safety assessment method from the non-coal mine site safety management and inherent risks, and clarifies the non-coal mine safety assessment steps and specific requirements. The site safety risk is divided into three types of research projects. Record the investigation in the form of compliance or non-compliance and deduction, and ask and investigate the specific data of the inherent risk items, summarize and determine the overall risk level of the enterprise according to the non-coal mine site risk classification table and the inherent risk classification table.In order to comprehensively grasp and evaluate the safety management and inherent risks of non-coal mines, improve the safety management status of non-coal mine enterprises, improve the safety management level of non-coal mines, provide theoretical support for reducing and preventing accidents, and provide future development directions for enterprises. Safety investment provides a fundamental basis for the prevention and control of major accidents in non-coal mine enterprises.
    Research and Application of Parallel Return Air with Multi-level Drift and Multi-shaft in a Deep Mining Ventilation System
    YAO Yin-Pei
    2019, 35(01):  189-192. 
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    The ventilation system in deep mining is faced with high temperature, long ventilation line, complex network and insufficient pressure of main fan, etc. Reforming design is necessary. Taking the two stage deep mining of a lead-zinc mine in Hunan as an example, the deep ore body is to the south side with high sulphur content, and releasing large heat, the ventilation has long line and large resistance, the main fan is low, the fresh air quantity is insufficient and the heat is difficult to expel, which seriously affects the safety production of the mine. In order to solve the difficult problem of mine ventilation, the key problems existing system are analyzed on the basis of field investigation and determination, and the modification scheme of parallel return air with multi-level drift and multi-shaft are put forwards in deep mining ventilation, The multi-shaft parallel return network is formed by using auxiliary inclined shaft, small shaft and return air well, and two levels transportation lanes in the end upper part are used as the return air passage of the deep mining, which can effectively reduce the ventilation resistance. The scheme makes full use of the existing projects, with less investment and quick effect, and good results in engineering application are obtained, that can be used for the similar transformation in ventilation system.
    Optimization of Coal Seam Gas Content Determination Method and Field Application
    HUANG He
    2019, 35(01):  193-196. 
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    Against problems existing in gas content measurement process are analyzed, and developed a reverse circulation fixed-point fast sampling device, the device includes sampling drill, double casing pipe and double channel soda bibcock, coal sample collection device, etc. Device adopts end are connected to the sampling drill rod end at the other end connected to the double casing pipe, through the coal produced by the rotation of drill rig drive double-wall drill pipe sampling, use of compressed air at the end of drilling formation pressure wind vortex, will blow out coal sample into the double-wall drill pipe inner tube into the sampling device. Meanwhile CHP50M coal seam gas content detector was used to collect the coal sample were measured, through the study of the optimization of coal bed gas content measurement of the field application results show that the sampling time is less than 3 min, sampling depth is more than 100 m, immediately after the success of the sample after 3~5 min to get coal bed gas content as a result.
    Analysis on the Anti-shock During the Tunneling and Mining of 58008-3 Working Face in Laohutai Mine
    LIU Da-Wei, ZHAO Shao-Hui, ZHANG Shi-Wei
    2019, 35(01):  197-200. 
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    In order to ensure the safe recovery of the 58008-3 working face of Laohutai Coal Mine, the "four-in-one" comprehensive anti-shock measures were analyzed during the 58008-3 working face tunneling and mining. According to the geological conditions and lithological characteristics of the mine, the impact risk areas are divided, and the support methods of various areas are strengthened. During tunneling and mining, the drill cutting method, acoustic electricity monitoring method and mine pressure observation method are used to predict the impact risk. The high-pressure water injection, pressure relief drilling, "two excavation and one drill" or "two drills and one excavation" are adopted. During the construction period, strictly follow the requirements of the coal mine safety regulations. The results show that the drill cuttings method can effectively predict the impact risk of the working face, and the high pressure water injection can effectively achieve the purpose of pressure relief. In general, the "four-in-one" comprehensive anti-shock measures are safe and effective in production.
    Coupling and Coordination Analysis of Production Efficiency and Green Mine Construction in Bauxite Enterprise:taking Chinalco Guangxi Branch for Example
    ZHANG Wen-Hui, LI Rui-Jun, LI Xing-Ru, YU Chang-Liang
    2019, 35(01):  206-210. 
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    With the deepening of the national ecological civilization construction work, the development of green mining, the construction of green mines and the protection of mineral resources have become the common responsibility of the mineral resources management departments and mining enterprises. In this paper, the coupling degree model is used to study the coupling and coordination degree between the production efficiency level and the green mine construction index system, taking the Guangxi branch of China Aluminum Company as an example. The results show that the coupling coordination model can be used to better evaluate the coupling coordination and relationship between them. It is helpful for the mine management department to carry out the quality evaluation of green mine construction and to further improve the level of green mine construction.
    Research and Application of Comprehensive Dust-settling Technology in 11217 Large Mining Height Fully-mechanized Face in Xiaojihan Coal Mine
    CHEN Jia-Geng, YANG Tong
    2019, 35(01):  211-214. 
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    In view of Xiaojihan Coal Mine 217 large mining height are broken problem of dust pollution in the production process of fully mechanized working face, on the basis of analyzing the characteristics of producing dust, put forward "after suppression, control, and then drop" dust control train of thought, decided in the working face tracking spray dust control system using dust source + rocker arm high pressure spray coal tractor shot charged dust dust, the dust control technique of combining and according to the stent during the down move frame column producing dust the characteristics of large amount of design of the support frame hydraulic ejector between dust removal device. After the above dust removal measures were taken, the total dust concentration and respirable dust concentration of the working face during normal production were reduced by 90% and more than 86% respectively, and significant dust removal effect was achieved.
    Study on Surface Movement Law and Land Damage Condition of Honghai Mining Area in Hami
    ZHAO Hua
    2019, 35(01):  215-218. 
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    Taking Hami Honghai 11031 working face as the study area, through the set surface movement deformation observation, field observations data information, analyzed the data processing, obtained various angular parameters (boundary angle, mobile angle, crack angle), the dynamic parameters (starting from, impact Angle, advancing distance, etc.) in advance, estimated parameters (subsidence coefficient q, main influencing tangent tan beta, inflection point move from S, mining influence spread angle theta). Based on the rock shift parameters, the probability integral method is used to predict the surface subsidence, and the visualization model is obtained. On the basis of this, it is analyzed that it mainly caused land damage such as subsidence and surface crack. To provide guidance for the surface recovery of mined-out area.