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

扫码分享

Table of Content

    15 July 2014, Volume 30 Issue 07
    Previous Issue    Next Issue
    Evaluate on the Coal Mine Construction Project Based on F-AHP
    FAN Guo-Cheng, XIA Jun-Min, WANG Gang, WANG Yu-Lu
    2014, 30(07):  1-3. 
    Asbtract ( 1400 )   PDF  
    Related Articles | Metrics
    In order to evaluate the coal mining construction project effectively,the evaluation index system of coal construction project based on sustainable development ideology.The mathematical model is established based on the fuzzy analytic hierarchy process(F-AHP)based on entropy weight to evaluation the coal construction project scheme.The research results in this paper provides a new scientific method for the decision of coal mine construction project investment and selection of coal mine construction project scheme.
    Research on the Coal Enterprises Knowledge Management System Based on Search Engines
    ZHAO Mei-Fang
    2014, 30(07):  4-5. 
    Asbtract ( 1458 )   PDF  
    Related Articles | Metrics
    Combined with the principle of search engines,the coal enterprises knowledge management system is developed by application of knowledge engineering,system science and the vector space model.The system has the functions of information searching,retrieval service,knowledge classification and so on.Therefore,the coal enterprises knowledge management system can make full use of the coal information resources.
    Numerical simulation on the Optimization of Stope Structure of Large-diameter Long Hole Afterwards Backfilling Mining Method
    LI An-Ping, LIU Yang-Shu, ZHOU Ming
    2014, 30(07):  6-9. 
    Asbtract ( 1514 )   PDF  
    Related Articles | Metrics
    According to the mining technical conditions of Asele copper mine,the Ansys software is adopted to calculate and analyze the stress and displacement change rule of the stope wall rocks with various spans of 10,12,13,15 m.The research results show that,stope span is the important factor which influences the stability of stope.Under the existing condition,if the stope span is above 13 m,it will be not remain stable,therefore,the optimal value of stope span is from 8 m to 12 m.
    Experiment on the Law of Strength Increasing of Ultrafine Tailings Filling Body
    GE Hai-Yuan, CHEN Chao, LI Hong-Bao, WANG Sen, ZHOU Jian, JING Bo-Xiang
    2014, 30(07):  10-13. 
    Asbtract ( 1634 )   PDF  
    Related Articles | Metrics
    Taking the ultrafine tailings backfilling materials of the eastern part of Hebei province as an example,the physical simulation experiment method is adopted to solve the problems of ultrafine tailings backfilling cemented filling.Relationships between the parameters of the structural components,materials ratio,filling backfilling materials concentration of ultrafine tailings and the strength of filling body are analyzed based on uniform experiments.Therefore,the mechanical properties and its change law of ultrafine tailings filling body are revealed.
    Design and Implementation of the True Three-dimensional Laneway Based on Dimine Software
    CHEN Zhi, CHEN Hui, TIAN Feng-Jie, FU Han-Ze, WANG Di
    2014, 30(07):  14-16. 
    Asbtract ( 1558 )   PDF  
    Related Articles | Metrics
    Combing with the actual situation of mining engineering,the true three-dimensional model of mineral sheers roadway is established and the visualization of actual and design roadway are realized to make the design of mine roadway even more intuitive and accurate.The research results in this paper lay the foundation of improving the production management level and digital mine construction.
    Research on the Time-space Evolution Characteristics of Acoustic Emission Activities during the Pillar Failure Process
    ZHANG Hong-Bo, WAN Ji-Long, WU Chuan-Li, CHEN Jun-Chi
    2014, 30(07):  17-19+24. 
    Asbtract ( 1242 )   PDF  
    Related Articles | Metrics
    Pillar and its stability are the core factors of the research work of stope stability.So,three groups of man-made pillar physical models are obtained by granite samples,the acoustic emission instrument is adopted to analyze the time-space evolution characteristics of during the pillar failure process.The experimental results show that,acoustic emission is scattered at the initial loading step,with the loading increasing, acoustic emission start to gather gradually and nucleate in the internal fracture surface of pillar,as a results,the shear macroscopic cracks are appeared.During the total loading process,acoustic emission achieve two peaks at the end of elastic deformation and the start of producing plastic failure.The amplitude of acoustic emission is about 50 dB at the end of elastic deformation.When the loading reach the 90％of the peak stress,acoustic emission hits reaches the largest peak value at the total loading process.Since then, number of acoustic emission hits reduce step by step,but the large amplitude events (from 80 dB to100 dB) of acoustic emission hits start to increase gradually,the macroscopic creaks cut-through gradually and the damages will be produced.Therefore,the research results in this paper can provide some reference for predicting the damages of the rock samples in laboratory.
    Radar Detection on the Crack of Filling Body
    CHEN Xin-Jia, LIN Guo-Hong
    2014, 30(07):  20-21+27. 
    Asbtract ( 1357 )   PDF  
    Related Articles | Metrics
    The grounding penetrating radar is widely used to the geotechnical structure detection, because of the advantages of non-destructive,efficient,high anti-interference ability,easy operation,low cost,few limiting conditions,high detection precision,continuous scanning for tunnel.The grounding penetrating radar is used to detect the crack of filling in Wushan copper mine.,the applications results show that,the detection results is consistent with the actual situation.So,the grounding penetrating radar provide the safeguard for the mine safety production.
    Research on the Microseismic Signals in the Process of Coal and Rock Deformation and Failure
    WEI Li-Na, ZHOU Chun-Yan, LI Jing, CAO Xiao-Dan
    2014, 30(07):  22-24. 
    Asbtract ( 1458 )   PDF  
    Related Articles | Metrics
    The microseismic signals of the coal and rock deformation and failure are monitored by the laboratory experiment method.The regularity and characteristics of microseismic signals of coal and rock deformation and failure are contrastive analyzed.Besides that,the mechanism of coal and rock deformation and failure is discussed.The research results show that,the coal and rock samples showing a weakly microseismic signals before the main fracture,that is to say,the main frequency zone is widen before the damage occurs,when the stress reach the maximum, the frequency of signals are complex,so,it is indicated that,the stage of coal samples enter a state of dangerous,it is necessary to take some appropriate measures to deal with them.Therefore,the change characteristics of microseismic signals of coal and rock deformation and failure can be used to predict the happens of coal and rock dynamic disasters.
    Analysis on the Adaptability of Stents and the Mine Pressure Regularity of 500 m Depth Fully Mechanized Working Face
    WANG Yong-Ming
    2014, 30(07):  25-27. 
    Asbtract ( 1364 )   PDF  
    Related Articles | Metrics
    The direct reading type pressure gauge and digital continuous recording pressure gauge are adopted to monitor the support loading and the change situation of roof pressure in the process of mining of three measurement areas of the 500 m depth fully mechanized working face.Besides that,the stope pressure regularity and the wording characteristics of stents are researched,so the first weighting of main roof of the fully mechanized working face of 500 m depth slowly inclined thick coal seams are not synchronous,intervals on one side of the machine lane is greater than that of on side of the wind lane.The stents and supporting method in this paper can meet the requirements of mining design by analyzing the datas.
    Prediction of the Ore Grade Based on Surpac Software
    WU Si-Qin
    2014, 30(07):  28-30+53. 
    Asbtract ( 1115 )   PDF  
    Related Articles | Metrics
    The block model is established based on Surpac software and it is assigned value by adopting the methods of geostatistics and mathematical.Based on the function of three-dimensional modeling of Surpac software,the mining roadway model and the stoping diamond block model that according with the actual production situation to predict the stoping ore grade.
    Research on Ammonia Nitrogen Removing from Wastewater by Electrolysis Method
    SHANG Juan, WU Hong-Qiang
    2014, 30(07):  31-34. 
    Asbtract ( 1832 )   PDF  
    Related Articles | Metrics
    There is much thiamine in rare earth ore leaching wastewater,discharge without purification will cause environmental pollution.Using laboratory simulating prepared ammonia nitrogen wastewater as raw material,with conditions of pH of 7, content of Cl- was 500 mg/L,polar distance of 3 cm,20 V voltage electrolysis for 3 hous,content of ammonia nitrogen decreased from 100 mg/L 10.91 mg/L.Orthogonal test indicated that,factors affect the ammonia nitrogen removal rate decreased by voltage>［Cl-］>pH>polar distance.
    Pilot-scale Study of Ammonia Nitrogen Removal from Gold Smeltery Wastewater through Electro-catalytic-oxidation Operation
    FANG Rong-Mao, LIAO Xiao-Shan, LIAO Bin, LIN Feng-Xian, LIU Ya-Jian
    2014, 30(07):  35-37. 
    Asbtract ( 1579 )   PDF  
    Related Articles | Metrics
    A pilot-scale experiment was conducted in order to remove ammonia nitrogen from gold smeltery industrial wastewater, Zijin Mining Group Co.,Ltd., by electro-catalytic-oxidation process. The results showed that: electrolytic time has significant effects on ammonia nitrogen removing rate; batch treatment indexes are better than continuous, and with little costs. Electro-catalytic-oxidation operation has the advantages of low cost, fine effect and operating environment friendly, and considered to have a welcome industrial application prospect.
    Biooxidation Refractory Arsenic Gold Ore by Mixed Strains
    WU Wei, SI Gui-Cai, LIU Qi-Peng, HAN Cong-Hai, ZHANG Geng-Xin
    2014, 30(07):  38-41. 
    Asbtract ( 1384 )   PDF  
    Related Articles | Metrics
    In order to validate mixed strains have more biooxidation effect on of refractory arsenic gold ore, At.f, At.t, L.f and all three mixed bacterium was Cultivated and domesticated separately. The results showed that: compared with single bacteria, the mixed bacterium has the strongest ability of oxidation and leaching, the leaching rate of arsenic was up to 70.1% for 35 days; the leaching rate of ferrum for mixed bacterium is a little lower than L.f; Since gold was mainly wrapped by arsenic sulfide minerals, interaction between mixed strains can improve biooxidation. Fermentation tank expanding experiments indicated that: the influence of solution pH by mixed bacterium make the gold leaching more easily, and reduce the dosage of added acid; increase of Eh and maintain in a higher state can help the oxidation operation of pyrite and arsenopyrite.
    Analysis on the Deep Penetration Exploration Pattern and Deep Prospecting Effect
    XIE Chao-Yong, ZHAO Jian-Min, ZHANG Hong-Qiang, GONG Quan-De, LIU Tao
    2014, 30(07):  93-96. 
    Asbtract ( 1384 )   PDF  
    Related Articles | Metrics
    Deep penetration exploration pattern is the effective way of looking for the concealed polymetallic orebody.The high precision gravity measurement,controlled source audi-frequency magnetotelluric (CSAMT) and structural fissure geochemical survey method are applied comprehensively so as to make a large depth detection of concealed orebody（rock mass）.According to the difference of structure between rock(rock)stones and the surrounding rocks,the deep rock mass which is related to mineralization and fracture space position are inferred and interpreted.The research results in this paper has a guiding role for delineating deep prospecting target zone and evaluating resources quantitatively.
    Analysis on the Geological Characteristics and Metallogenic Factors of Hukouzhai Copper Ore Deposit
    ZHANG Shu-Nian, LI Jian-Feng
    2014, 30(07):  97-100. 
    Asbtract ( 1242 )   PDF  
    Related Articles | Metrics
    Based on the analysis on the geological characteristics of mine area and ore body of Hukouzhai copper mine,the metallogenic factors of the Hukouzhai copper mine are discussed in detail,then,several indicators for deposit are proposed,so as to provide some reference for the prospecting work in this area.
    Monitoring the Surface Displacement and the Deep Stress of Waste Dump
    FU Neng-Wu
    2014, 30(07):  118-120+184. 
    Asbtract ( 1813 )   PDF  
    Related Articles | Metrics
    Mine slope instability is a common geological disasters in mine,so,monitoring the waste dump is always the focus of the safety work in mine.Monitoring the displacement of waste dump cannot reflect the change trend of waste dump slope timely and completely.The GPS monitoring system not only reflect the state of equilibrium of surface displacement and stress of slope distinctly,but also conduct landslide warning by deep stress curve.Taking the northern waste dump in Zijin copper mine as an example,the monitoring points are set to monitor and analyze the displacement and stress.So,the good warning effect is obtained.
    Computing on the Ventilation Economic Section of Mine Return Air Shaft
    CAO Yong-Sheng, HUANG Shou-Yuan, WU Jiang
    2014, 30(07):  121-123. 
    Asbtract ( 1342 )   PDF  
    Related Articles | Metrics
    In mine ventilation system,the large wind speed to determine the return air shaft section but ignore the ventilation energy consumption.So,the computational formula between ventilation economic section and the parameters of air volume and ventilation time from the perspective of lining,maintenance and electricity costs of the return air shaft.Taking a mine as an example,the ventilation economic section is computed by the formula based on the basic datas of air volume of return air shaft,tunneling lining and electricity so as to optimize the investment cost during the construction and operation of return air shaft.The return air shaft acreage is obtained by economic analyzing the results of the computational formula and the original design acreage.
    Research on the Effect of Coal Mining on Carbon Reserves of Farmland Soil: Taking the Typical Coal Mining Subsidence Basin as a Case
    XU Zhan-Jun, ZHANG Shao-Liang, HOU Hu-Ping
    2014, 30(07):  128-131. 
    Asbtract ( 1510 )   PDF  
    Related Articles | Metrics
    Taking the typical coal mining subsidence basin of Jiuli mining area of Xuzhou city as the research object to analyze the effect of coal mining on carbon reserves of farmland soil.So,the sampling scheme of subsidence basin soil organic carbon library is designed, the soil organic carbon content is measured in laboratory,the soil organic carbon library of subsidence basin is built,the organic carbon reserves changs of subsidence basin before and after coal mining subsidence are analyzed.The research results show that,the soil organic carbon density of the slope areas is accordance with the one in control area under the condition of coal mining subsidence undisturbed.The soil organic carbon density of the slope areas decreased at first then increased along with the subsidence depth after the mining subsidence. The organic carbon reserves of soil carbon library of the subsidence basin is 560.4 t before mining subsidence,however,after mining subsidence,the organic carbon reserves is 530.9 t.Therefore,the influence of coal mining on the farmland soil organic carbon reserves is carbon loss (carbon source) effect.
    Application Status of Aqueous Sodium Metatungstate Solutions in Density Separation Reseach
    HE Kui, KU Jian-Gang, YU Hong-Xing, XU Lu, YU Kai-Ping
    2014, 30(07):  151-155+174. 
    Asbtract ( 1470 )   PDF  
    Related Articles | Metrics
    Inorganic heavy-liquid sodium polytungstate, with the characteristics of high density, nontoxic, easily prepared and cyclic utilization, have been widely applied in geology, soil science, and marine biology. It is used for separating the mine and rock in geology, providing a new way for the separation of micro-fine simple mineral. For soil science, it is applied to separate the soil aggregation particles, organic matter, and humic acids. It is used for separating the microorganism and organic matter in sediments in marine biology. The sodium polytungstate density separation operation is simple and stable, and most inportantly the physic-chemical property of matter will not change.
    Research on the Rheological Characteristics of Total Tailings Slurry of two Kinds of Cementing Materials
    LOU Quan, CHEN Guang-Ping
    2014, 30(07):  156-159+192. 
    Asbtract ( 1239 )   PDF  
    Related Articles | Metrics
    Through comparative experiment on the new cementing material and cement,the factors that affect the total tailings backfilling effect are analyzed,the influence of different cementing material to rheological characteristics in the total tailings backfilling operations are disclosed comprehensively.The advantages of the new cementing material in the filling operation is discussed.So,the research results in this paper lay the foundation of optimizing the parameters of the ratio of filling pulp and pipage.
    Research on the Interfacial Properties of the Oil Phase Material and Ammonium Nitrate Solution
    MENG Guo-Liang
    2014, 30(07):  160-161+188. 
    Asbtract ( 1368 )   PDF  
    Related Articles | Metrics
    In order toanalyzethe interfacial properties of the oil phase material and Ammonium nitrate solutionpropellantburning process,the interfacial viscosity and interfacial film yield value are measured by shear interfacial viscoelastic meter.The relationship between the interfacial viscosity of emulsifier,oil phase material,ammonium nitrate solution and interfacial yield value are analyzed in detail.The research results show that,with the increase of emulsifier content percentage,the interfacial viscosity and interfacial film yield value are increased accordingly.The interfacial viscosity value and interfacial film yield value of the two phase system that is formed by T-154 high molecular emulsifier are high.
    Application of Ultrafine Stirred Mill in Mineral Processing
    LI Yan-Jun, LI Yun-Heng, WANG Ya-Qin, LIU Jie, LIU Yan-Ling
    2014, 30(07):  162-165+192. 
    Asbtract ( 1249 )   PDF  
    Related Articles | Metrics
    The stirred mill is a kind of fine grinding equipment with such merit as higher grinding efficiency, simpler technology, more even size distribution, lower energy, etc. than ball mill, which is widely used in mineral processing. The working principle of stirred mill were introduced, several representative types of stirred mill and each characteristics and application status were analyzed, the development status of stirred mill and its application in mineral processing of metal mine were reviewed. The stirred mill is used economically to improve the grinding efficiency and objective mineral liberation degree.
    Research on the Management Information System of Coal Mine Mechanical and Electrical Equipment Based on B/S Pattern
    ZHAO Fu-Qiang, XU Cong
    2014, 30(07):  166-167. 
    Asbtract ( 1196 )   PDF  
    Related Articles | Metrics
    With the deepening of coal mining and implementation of the mechanized coal mining,it is very important to enhance the scientific management level of coal mine mechanical and electrical equipment.So,the technological base of remote management of coal mine mechanical and electrical equipment are discussed,the design scheme of management information system of coal mine mechanical and electrical equipment based on B/S pattern is researched.