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Table of Content

    15 April 2010, Volume 39 Issue 4
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    Investigation of Multiscale Effect and Multiple Processes Coupling in Leaching System
    YAO Gao-Hui, WU Ai-Xiang, WANG Hong-Jiang
    2010, 39(4):  1-5+40. 
    Asbtract ( 1987 )  
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    As a kind of mature technology,heap leaching has been widely used to leach lowgrade ore,but its theory research is no perfect. Firstly,study scale partition of orerock granular in heap leaching is carried out. It is proposed that the visualization of multiscale spatial structure of orerock granular can be realized based on microscopic image analysis technology,CT technology and image processing technology. Through indepth analysis of linking scale,multiphase and multifield coupling,a series of problems to be solved at this stage are presented. Then,a number of researches about coupled numerical simulation of multiple processes are discussed in detail. With foreign research results on mechanism of microbial leaching,some research on microbial heap leaching is brought forward which regards native chalcopyrite as the research object. Finally,based on introduction of heap leaching technology at home and abroad,research difficulties of heap leaching theory are emphasized.
    Testing Method of Dynamic Fracture Toughness by Flattened CCNBD-SHPB
    MAN Ke, ZHOU Hong-Wei, XIE Jing-Li
    2010, 39(4):  6-9+19. 
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    Based on the fracture toughness testing method on CCNBD specimen and the principle of SHPB,a new testing research for the dynamic fracture toughness with flattened CCNBD-SHPB was carried out. The importance of making the dynamic force balance satisfy the stress uniformity of SHPB and the tests data process was discussed. It extended the equation of quasi-static stress intensity factor for dynamic fracture toughness calculation. Then,the maximum load under the balanced dynamic force was substituting into the equation to get the value of the dynamic fracture toughness. Tests verified the proposed method in theory,and it showed that this testing based on flattened CCNBD-SHPB was effective.
    Fuzzy Comprehensive Evaluation on Rock-burst Tendency of Deep Mining in Maluping Mine
    LIN Ye, DU Shao-Lun, MA Chun-De, WANG Bin, CHEN Hong-Jiang
    2010, 39(4):  10-14. 
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    After 40 years' mining in Maluping mine of Kaiyang Phosphorus Mine Group,some of its level positions are coming into the deep mining. In order to predict the orientation of rock-burst for four kinds of rocks in 750 level,700 level and 600 level respectively,the systematical experiments for the four kinds of rocks have been performed. At the same time,various evaluation criteria on the different influence factors were put forwards. And the theoretical prediction method was used to realize its fuzzy mathematics evaluation of rock-burst. At last,the level-variables Eigenvalue was used as the judge criteria to estimate the orientation of rock-burst in three level sections for these four kinds of rocks,and it is concluded that the rock-burst tendency will be up with the depth of these four rocks increase. 
    Research of the Integration System of Underground Mining and  Beneficiation for Underground Mineral Resources
    SUN Huo-Ran, MAO Feng-Hai, LIU Xiao-Bo, AN Long, LI Shao-Hui
    2010, 39(4):  15-19. 
    Asbtract ( 1913 )  
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    There are a large number of mineral resources buried underground in China. The traditional and conventional mining method to exploit these mineral resources lead to a series of problems,such as difficult exploitation,poor economic efficiency,and the salient interference of the environment etc.In response to these circumstances,the integration system of underground mining and beneficiation for mineral resources is proposed,and the system design and key technology are studied,with emphasis on the characteristics of the system and carryover results. It is pointed out that the integration system of underground mining and beneficiation for mineral resources is the only way to rationally and economically exploit deep ore bodies. It is also a breakthrough of mineral resources exploitation theory and methods.
    Experimental Study of Waste Rock Fill Mining Method with the Upward Slitting Stratification
    LI Fei, QIAO Deng-Pan
    2010, 39(4):  20-23. 
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    The main mining method for Dongdashan inclined thick iron ore bodies is with sublevel caving with its sublevel height of 8～10 m. The ore recovery is about 49.25%～55% and the dilution is about 29.92%～33.37%,which have been maintained for many years. Researches showed that there are many problems in the sublevel caving process,such as large rate of mining-cut ratio,huge ore-drawing loss,and unrecovered roof and bottom pillar etc. According to the problems above,the waste rock fill mining method with the upward slitting stratification is put forward. The operation shows that the recovery can be increased to about 87%,and the dilution rate can be decreased to about 15% by the new mining process. Hence,the mine service life is effectively extended,and the economic benefits are significantly improved. The process can be referred by some other similar mines.
    Research on Ore Drawing Indexes Optimization in Transition Sublevel of  Sublevel Caving for Jinshandian Iron Ore
    CHEN Qing-Yun, YANG Cong-Bing, ZUO Yu-Jun, WANG Shui-Ping, ZHANG Dian-Ji
    2010, 39(4):  24-27+49. 
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    For those mines adopting the sublevel caving method,the large structure parameters of the natural lay are not suitable for the ore drawing in transition sublevel process. According to the technical conditions of mining in Jinshandian iron mine,some methods including graphic representation,physical simulation and the experiment of spot ore drawing are carried out,and the reasonable stope structural parameters in primary transition sublevel which we have got are 14m×16m×3.4m. In ore-drawing sublevel,serial methods including the ore drawing system of cut-off grade,increasing the drawing pace,strengthening those geological and metrical works,improving the quality of blasting,etc. are adopted. Hence,the recovery rate can reach 77.97%,and it is feasible to complete the product indexes in transition sublevel.
    Shaft Development Program Optimization for Transferring Open-pit into Underground Mining Based on DEA Model
    LIU Wei-Jie, ZHANG Qin-Li, WANG Xin-Min
    2010, 39(4):  28-31. 
    Asbtract ( 2071 )  
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    The choice of mineral deposit development program is of importance to the underground exploitation. Huangmailing phosphates mine will be transferred from open-pit to underground mining. In view of ensuring the security during the transition period from open-pit to underground mining,four shaft development viable programs were proposed. DEA model was established by using data envelopment analysis from such main evaluation indexes as capital investment,operating costs,project volume,open-pit mining impact,environmental protection,construction difficulties,ventilation condition and so on.  Through using DEA model to analyze these shaft developments,Wangjiashan shaft development program was firstly recommended. The results show that the data envelopment analysis method is an effective optimization program with a broad application prospect.
    Research on Shear Resistant Performance of Different Weak Plane in Cemented Slurry Beam Butt Welding
    ZHAO Shao-Ru, NI Bin, LIU Xiao-Ming
    2010, 39(4):  32-36. 
    Asbtract ( 2003 )  
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    Combining the complex condition of Jinchuan Mine,on-site sampling in typical regional is made. The shearing experiments on four groups of structural slabs under different normal pressure were carried out by RYL-600 computer-controlled shear rheology machine. The experiments showed that the shear strength of cemented high-density tailing mortar and the graded tailing paste mortar under shear resistant connection is higher than that of without shear resistant connection. Without shear resistant connection in slabs,the shear strength of the graded tailing paste mortar is more than that of high-density tailing mortar. As installing shear resistant connection in slabs,the shear strength of the graded tailing paste mortar was close to that of the high-density tailing mortar. The experimental result showed that the shear strength of both mortars separately rose just as the shear resistant connection was installed between two close week places of back-filling bodies,and then the whole stability of filling structure was enhanced. 
    Experimental Study on Velocity Effects in Dynamic Fracture of Brittle Rock
    CAI Ping, DUAN Qing-Quan
    2010, 39(4):  37-40. 
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    To investigate the phenomena of the fracture velocity in rocks materials,the weight-drop tests of two rocks samples with I-type initial crack are carried out. Meanwhile，high-speed photography is used to record crack tip position in surface. And the Scanning Electronic Microscope (SEM) and Laser Profilometer are adopted to obtain the specific structural information from cross-fracture and sample surface. Then,the relationship of the fracture velocity in rapid crack with the rock crack mode and energy consumption is analyzed by the phenomenology method.
    Based on Analytic Network Process for Sustainable Exploitation and Utilization of Resources
    QIN Chu-Li, WU Guo-Quan
    2010, 39(4):  41-43+63. 
    Asbtract ( 2048 )  
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    The sustainable exploitation and utilization evaluation index system is a compound system with network and multi-index,so it is difficult to evaluate effectively by common methods. And thus,a set of sustainable development evaluation index system of mineral resources based on ANP is established. It proposes to apply the Super-Decisions software to process large amounts of data. According to different research purposes,an appropriate data standardization method is adopted to calculate the integrated evaluation value. Then,the concept of the sustainable exploitation and utilization are quantified,providing the basis for the scientific decision-making. 
    Study on Time Series Models for Predicting Residual Subsidence of Abandoned Mine Goafs
    WANG Zheng-Shuai, DENG Ka-Zhong
    2010, 39(4):  44-46+77. 
    Asbtract ( 1844 )  
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    The observation data modeling for the residual subsidence in abandoned mine goafs by auto regression moving average (ARMA) model,trend regression & ARMA model and WARMA model of combining with wavelet multi-resolution analysis is built,and the corresponding prediction results are analyzed respectively. The results are shown as follows: all of three models can be used for short-term prediction of residual subsidence; In contrast with other two models,WARMA model is more precise in prediction and superior in predicting step and stability. Hence,it has a practical value in application.
    On the Goaf Treatment and Sublevel Caving Proposal in the 1 158 m  Section of Rongguan Multi-metal Mine
    LI Ping, KE Bo, YU Yan
    2010, 39(4):  47-49. 
    Asbtract ( 1931 )  
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    In view of various goafs in the 1 158 m middle section of the west mining area of Rongguan multi-metal mine of Xingye Group,Inner Mongolia,and the mining transferring later,the geological features,the circumstances of goafs and surface project,sublevel caving program,blasting technique parameters and the construction program are deeply analyzed and a reasonable proposal is given in detail to create favorable conditions for dealing with the goafs and forming the cover for the non-pillar sublevel caving in the following sections.
    Application of the Upward Slicing and Filling with Perturbation in Undersea Exploration
    PENG Kang, LI Xi-Bing, ZHAO Guo-Yan, WANG Cheng, LIU Zhi-Xiang
    2010, 39(4):  50-52. 
    Asbtract ( 2054 )  
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    Xinli mining area of Sanshandao gold deposit is the first hard rock mine which belongs to the under-sea deposit in our country,and only Longkou is mining coal under sea in domestic.The orebody in Sanshandao mining area is located in the range of several decameter to several hectometre below the seabed.It is full meaningful submarine mining.And the cut-and-fill method is an optimum mining method.Through research on the commenting performance of filling tailings with different concentration and different comment-sand ratio,it is determined that the whole tailings upward flat-back cut-and-fill stoping method is adopted with comment-sand ratio of 1∶〖KG-*2〗8 in filling and 1∶〖KG-*2〗4 in commenting surface at a filling concentration of about 70%.It provides a technical support for the safety and high efficiency mining of Xinli mining area of Sanshandao gold deposit in the undersea mining.
    Kinematic Limit Analysis of Rock and Soil Slope Stability
    ZHANG Hong-Tao, JI Hong-Guang, WANG Jin-An, LIU Ying-Hua
    2010, 39(4):  53-57+80. 
    Asbtract ( 2039 )  
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    This paper presents a finite element numerical method to evaluate the rock and soil slope stability based on the upper bound limit analysis.In light of Mohr-Coulumb yield criterion,the solution of slope stability is deduced to a nonlinear programming by means of the kinematic limit analysis and of finite element method from the plastic limit analysis,where the loading factors of external load or self-weight are the objective function.According to the nonlinear theory of mathematical programming,a direct iterative algorithm is constructed.Some examples are given to illustrate the validity of the method.The results show that the method is effective to the design and analysis of slope stability.
    Experimental Research on Flotation Separation of Siderite and Hematite
    TIAN Yi-An, SUN Bing-Quan
    2010, 39(4):  58-63. 
    Asbtract ( 1707 )  
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    From the flotation tests of mono-mineral Siderite and Hematite,it is discovered that the new-developed anionic collector TS has a good selective collecting effect on Siderite,and the modified sodium silicate has a good selective inhibited effect on Hematite under higher alkaline condition. These two agents were used in beneficiation tests on artificial ores of Siderite and Hematite,and a good concentration result was obtained. The XPS analysis showed that TS can be adsorbed in the surface of Siderite,and the modified sodium silicate be adsorbed in the surface of Hematite. Both kinds of adsorption belong to the chemical one,where TS play a role through the action of its bonding atomic sulfur and ferrous ions on the surface of siderite
    Study on the Beneficiation Process of a Certain Micro-fine-grained Hematite
    HU Yi-Ming, LIU Jun, ZHANG Yong
    2010, 39(4):  64-67+88. 
    Asbtract ( 1631 )  
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    The two beneficiation flow-sheet experiments are carried out for a certain micro-fine-grained hematite,respectively,which consist of the process of stage grinding- gravity separation - low intensity magnetic separation - high gradient and intensity magnetic separation- inverse flotation and the process of grinding- low intensity magnetic separation-high gradient and intensity magnetic separation-inverse flotation. The first process got the iron concentrate upgrading of 64.88% with 79.91% iron recovery; The second process obtained iron concentrate upgrading of 65.45% with 79.84% iron recovery. Considering the separation index,flow-sheet structure and grinding costs,the process of stage grinding-low intensity magnetic separation-high gradient and intensity magnetic separation-inverse flotation is recommended.
    Research of Flocculation-High Intensity Magnetic Separation on Oolitic Hematite Ore
    NIU Fu-Sheng, ZHOU Shan-Shan, LI Huai-Xiang, WU Gen
    2010, 39(4):  68-71. 
    Asbtract ( 1583 )  
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    Abstact  It was determined through analyzing the feature of oolitic hematite ore to adopt flocculation-high intensity magnetic as process flow. Under the condition of water glass of 800+400 g/t as the dispersant,starch of 200+100 g/t as the flocculant,magnetic field intensity of 1 194 kA/m at pH 11,the iron concentrate grading at 55.51% with 76.02% iron recovery was obtained through the process of 1-roughing and 1-scavenging.
    Experimental Study on Comprehensive Recovery of Rangtang  Lithium-contained Complex Ore of Sichuan
    LIU Hou-Ming, LI Cheng-Xiu, WANG Chang-Liang, WEI De-Zhou, MAO Yi-Lin
    2010, 39(4):  72-77. 
    Asbtract ( 1753 )  
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    The main valuable mineral is spodumene in Rangtang Lithium polymetallic ores of Sichuan. The recoverable minerals are tantalite,niobium and minerals. According to density differences of tantalum-niobium and cassiterite,and spodumene and gangue minerals,the magnetic properties differences of tantalum-niobite and cassiterite,and the floatability difference of spodumene and gangue minerals,the beneficiation process test consisting of the gravity separation-magnetic separation-flotation is adopted to get the tantalum,niobium and tin ore concentrates,so that all valuable elements in ores have been better recovered. The lithium concentrate with grade of 5.53% and recovery 72.68% is obtained; Meanwhile,the tantalum and niobium concentrates of Ta2O5 and Nb2O5 are grading at 17.00% and 32.55% with a 59.38% and 66.05% recovery respectively,and the tin concentrate is grading at 52.16% with a 99.14% recovery.
    Impact of Pyrite on Uranium Bio-leaching
    KONG Xun, LIU Jin-Hui
    2010, 39(4):  78-80. 
    Asbtract ( 2056 )  
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    A comparative tests of uranium bio-leaching was conducted,where with and without the presence of pyrite are studied and comparison made on leaching cycle,acid consumption rate and rate of leaching. The results showed that acid consumption of the uranium mineral with pyrite was 1.2% lower than that without pyrite,and its leaching rate was 10% higher. It is indicated that presence of pyrite in uranium bioleaching process could reduce leaching cycle,lower acid consumption and increase leaching rate.
    Contrast Experiments on Different Bioleaching Method for Uranium Ore
    WANG Xue-Gang, SUN Zhan-Xue, LIU Jin-Hui, LI Xue-Li, SHI Wei-Jun
    2010, 39(4):  81-83+130. 
    Asbtract ( 1722 )  
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    A comparative bacteria leach experiments like,column leaching and tank leaching (aeration condition),were carried out on uranium ore. The change rules of related parameters in the leaching process are analyzed and the suitable bioleaching way for the uranium ore was discussed. The results of experiment showed that the column leaching and the tank leaching had a good effect on the uranium ore with the leaching rate 89.85% and 87.05%,the ore slag grade 0.010 4% and 0.013 3%,and the acid consumption 3.38% and 2.16% respectively within 48 d. Compared with the leaching periods,acid consumption,leaching rate and actual industrial conditions,it is considered that the column leaching is the priority to the uranium ore.
    Study on Flotation Technology of Copper-nickel Sulfide Ore in North Korea
    ZHAO Li-Bing, CHENG Shao-Yi, YUAN Zhi-Tao, HAN Yue-Xin, MA Song-Bo
    2010, 39(4):  84-88. 
    Asbtract ( 1786 )  
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    Based on the process mineralogical investigations of the copper-nickel sulfide ore,the flotation experiments are carried out in order to provide a basis for exploring some copper-nickel ores from North Korea. The experiments showed that acceptable copper-nickel concentrate for electric smelting can be obtained through the process of one-roughing,three-cleaning and four-scavenging under grinding fineness of -0.074 mm 75%,where nickel is upgraded to 5.16% with a 92.13% nickel recovery and copper is upgraded to 1.96% with a 92.13% copper recovery.
    Process Mineralogy Studies on V-Ti Magnetite  in Panzhihua Region
    LI Liang, LUO Jian-Lin
    2010, 39(4):  89-92+109. 
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    Through the laser microprobe spectroscopy analysis,spectral semi-quantitative analysis and electron probe quantitative analysis and others,the detailed process mineralogy studies on a V-Ti magnetite in Panzhihua region were carried out to identify the material composition of the ore,the main embedded mineral features and existing occurrence of major beneficial elements. The results can be used as the basic reference for the rational exploitation of vanadium titanium magnetite resources.
    Research on Mineral Processing Status of Ilmenite Resources
    XIONG Kun, WEN Shu-Ming, ZHENG Hai-Lei
    2010, 39(4):  93-96. 
    Asbtract ( 1721 )  
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    Researches on the flotation reagent and process of ilmenite ore and metallurgical method on titanium concentrate are introduced. It points out that the recovery of titanium can be improved by fine ilmenite flotation,and to decrease calcium and magnesium from titanium concentrate is crucial to effectively make use of titanium resource.
    Influence Factors Analysis of DEM Precision based on InSAR in Mining Area
    ZHANG Xian-Ni, GUO Guang-Li, WANG Lei, WANG Qiang
    2010, 39(4):  97-99. 
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    Building mining area DEM based on InSAR technology has become hot in recent years,and researchers gradually focus on the practical application from the theory.The special surveying method of SAR system（side-looking imaging) and specific surface condition of mining area lead to many influence on high precision.From the principle of InSAR measuring elevation,and using the error theory knowledge,the impact of the relative error sources for elevation-precision measurement is systematically analyzed,and the relationship between measurement precision,phase error,baseline length,and baseline,inclination is deduced.And error propagation curves are made to show the influence rules of each other.Also the impact of topographical features on high-precision measurements is analyzed according to the features of mining subsidence.Finally a conclusion shows that the slope change caused by the mining subsidence has an obvious impact on high-precision InSAR measurements in partition.
    Structural Superimposed Halo Study and Deep Prediction of Liaoning Paishanlou Gold Deposit
    YANG Yi-Biao, JIA San-Shi, WANG 恩De, FU Jian-Fei, HOU Gen-Qun, MEN Ye-Kai
    2010, 39(4):  100-105. 
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    Paishanlou gold deposit is a large scale gold deposit located in ductile shear zone of greenstone area,with a feature of two three-stage mineralization superimposed. Considering the actual demands in production,a comprehensive geological and geochemical study on Paishanlou gold deposit is carried out by the new method of structural superimposed halo. It is shown that the front halo indicator elements of ore-body are As,Ba,Sb; The ore halo indicator elements are Pb,Au,Ag,Cu,Zn; Rear halo indicator elements are V,Bi,Mo,Co,Mn,Ti,W. Considering the geological-geochemical characteristics of temporal and spatial evolution,a structural superimposed halo model is established for predicting blind ore-bodies of Paishanlou gold deposit. And the geological sign and the structural superimposed halo signs of predicting the blind ore-bodies in Paishanlou gold deposit were summarized. Using the structural superimposed halo model and geological-structural superimposed halo signs,the east-west blind ore-bodies in Paishanlou deep deposit are successfully predicted.
    Study on the Air Particles of Fankou Lead-zinc Deposit
    XIONG Zhi-Hua, CAO Jian-Jin, LIU Chang, LIU Shen-Bo, LUO Wen-Sheng-
    2010, 39(4):  106-109. 
    Asbtract ( 1790 )  
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    The air particles of Fankou lead-zinc deposit were collected with transmission electron microscopy grids. Through the transmission electron microscopy,it is discovered that there are a large number of air particles with size of less than 200 nm in the air of Fankou lead-zinc deposit. These particles are quite different from industrial emissions,vehicle exhausting,construction dust particles in morphology and elemental composition. So these particles may be inextricably related with the deposits and its exploration. It is primarily considered that the existence of underground ore body will have an impact on the air particles. The discovery means that an effective discriminating analysis can be made to discover the underground ore-bodies in new space from judging the special matters,air particles.
    Application and Practice of CMS System in Measurement of Mined-out Area
    LI Tong-Peng, WANG Heng-Yan, LOU Guang-Wen
    2010, 39(4):  110-113. 
    Asbtract ( 2082 )  
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    The mined-out area is one of the main hazards to endanger the safety of mine. So the monitoring of mined-out area is the basis of how to deal with and research. The characteristics,principle,on-site application and data post-processing of the CMS surveying system are introduced. Through the practice and examples,the real data of cavity roof area,actual boundary,volume etc are obtained. It is greatly convenient for the safe management of the mined-out area.
    Analysis of a Metallogenic Model and Main Control Factor in  Fengcheng Oil-sand Deposit of Junggar Basin
    WANG Zhu-Bin, XIAO Yuan-Fu, SUN Yan, BAI Wen-Hua, LIU Ren-He, LIU Hong-Qiang
    2010, 39(4):  114-117. 
    Asbtract ( 1959 )  
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    Fengcheng oil-sand deposit is a large scale one located in the northwestern margin of Junggar Basin.The oil-sand deposits in this region are mainly distributed in Cretaceous sandstone and basal conglomerate.Through research on the classification of the basin type and the characteristics of oil sands enrichment,the metallogenic model and ore-controlling factors of oil-sand are primarily grasped,and the various controlling factors on the oil sands formation are clearly determined.
    Research on the Construction Framework of Geological Resources Digitization for Metal Mines
    LI Guo-Qing, HU Nai-Lian, CHEN Dao-Gui, HE Ji-Ping, ZHENG Xiao-Li
    2010, 39(4):  118-122. 
    Asbtract ( 1921 )  
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    After the analysis and optimization to the flow path of geological resources information,a framework of geological resources digitization for mental mines was built up concentrating on the critical process during the flowing of the geological,measurement and mining data such as acquisition,storage,transport,expression,processing,as well as the application in the management and decision-making. Due to the function requirements of the geological resources digitalization for metal mines,the digitalization function system of geological information is formed,including the PDA based real-time acquisition to the data of geology and measurement,the digitalization processing to the geological resource information based on 3D visualization deposit model and the dynamic management and application of digitalized reserves based on network. Based on this,the data conversion logic on the direction of workflow technology was provided to realize the seamless transfer and dynamic management on the information of geological resources.
    Research on Speed Regulation Control System of Mine AC Hoist Based on PLC
    JI Yan-Fu, XU Liang, WANG Yu
    2010, 39(4):  123-125. 
    Asbtract ( 2081 )  
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    The speed regulation control system of mine AC hoist based on PLC was designed by adopting S7-300 PLC as controller and 6SE70 as frequency converter for special operational environment of mine. The system used the real-time monitoring work state of the upper computer,and set up security protect measures and fault processing function. The given hoist speed could be realized by S-shape speed curve which produced by PLC control software to increase speed regulation capability and precision. The practice proved that this system can fulfill the need of hoist speed regulation,and have characteristics of high reliability,strong flexibility,low fault rate with a good locale application effect.
    Geometrical Modeling of Complex Geological Structures Based on Delaunay Triangulation
    CAI Qiang, LI Hai-Sheng, ZUO Min, MENG Xian-Hai, YANG Qin
    2010, 39(4):  126-130. 
    Asbtract ( 1944 )  
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    Geological modeling has been widely applied in areas such as nonferrous metal mine exploitation,petroleum exploration,etc. Geology structure often presents non-manifold situation due to faults,resulting in relatively difficulties on complex geological structure modeling. Considering the well-behaved boundary description and the capacity adjust to constraints of Delaunay triangulation,the method of complex geological structures' modeling based on Delaunay triangulation was presented. Then the algorithm was verified by a case. The results showed that the geological structure model with geometrical consistency and grid topological consistency could be obtained by the algorithm.
    Application of the Production Information Management System in the Surface Iron Mime
    SU Sheng-Wang, WANG De-Zhi
    2010, 39(4):  131-133+141. 
    Asbtract ( 1984 )  
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    The high performance production information management system based on the information technology makes computer play a more important role in the producing business management of mine. The system can help top manager to find problems existed in production system and to make adjustment. Based on the requirement analysis of the production control information system of Barun Mine Company,a production information management system based on C/S model was developed,which has been applied in the production of surface iron mine of Barun Mining Company,Baosteel Group.
    Cement Sample Parameters Determination in On-Line Prompt Gamma  Neutron Activation Analysis with Monte-Carlo Method
    YANG Jian-Bo, TUO Xian-Guo, LI Zhe, MU Ke-Liang, LUO Yao-Hua, MOU Yun-Feng-
    2010, 39(4):  134-136+145. 
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    Abstract  Based on the prompt gamma neutron activation analysis(PGNAA) system device developed by the nuclear geophysical and geochemical research room,Chengdu University of Technology,MCNP process was adopted to simulate and calculate cement sample parametersResults of calculations showed that the relationship between prompt γ yield and the sample's thickness and shape (massive,granules,powders,etc.) was obtainedAccording to the simulation,the optimal sample thickness is determined to be 17 cm and the cement raw materials should be processed into fine particles before application in the actual analysis of PGNAA
    Flow Field Simulation of the Compound Fluidization Classifier (AFX)
    YAN Ling, WANG Zuo, TIAN Zhao-Ying, WU Xiao-Yuan
    2010, 39(4):  137-141. 
    Asbtract ( 1922 )  
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    Abstract  According to the grading principle of the AFX,the numerical simulation on the internal flow field of the simplified AFX model by Fluent,a fluid simulation software,is carried out,receiving the convergent resultsThis simulation method and research results obtained can provide some reference to the study of the AFX
    Research on Water Protection for Water-cooled Excitation Winding of High Gradient Magnetic Separator
    HE Jian-Quan
    2010, 39(4):  142-145. 
    Asbtract ( 1778 )  
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    In order to guarantee the normal operation of the high gradient magnetic separators, the core components-excitation winding must be offered for water protectionWith reasonable conjunction of water level sensors and detection amplifier circuit,a multichannel and non-interference protective device of cooling water could be set at the outfall of coilsWhen the shortage of water supply appeared in any inlet pipe,an alarm signal would be sent out immediatelyThis step could make the main control loop rupture the current provided to the excitation winding so that the coils would not be burnt due to over temperature
    Research on Geological Environment Disaster Chain and Systemic Treatment Technology of Mine Gully Area： A Case Study of Exploitation of Xiaoqinling Gold Mine at Western Henan
    GUO Fu-San, YUAN Qiao-Hong, YIN Kun-Long, ZHOU Chun-Mei
    2010, 39(4):  146-152. 
    Asbtract ( 1782 )  
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    This paper introduces the problem of geological environment and the deficiency of restoration and treatment for Western Henan mines,and the chain relationship of the geological environment disaster are expoundedBy using the systemic treatment and gully area treatment instead of mine single treatment,the geological and ecological environment can be improved and controlled effectivelyTaking Qinling gold mine of Zaoxiangyu Luanshigou in Linbao,Western Henan as an example,the main geological environment problems are slag heap disasters,and the geological disaster chain is formed due to debris flow aroused from losing stability of slag heapBased on the disaster chain effect,and with application of systemic treatment for gully area,the mine geological and ecological environment at Zaoxiangyu Gully Areas have been substantially improved by building slag dams,clearing wastes and drainage engineeringThe idea and scheme of treatment provide a reference for geological environment recovery and control of other mines
    Research on Comprehensive Prevention Measures of Geological Hazards in No.1 Chimashan Co
    ZHU Qi-Kun, GUO Na-Na, HUANG Yu-Qing
    2010, 39(4):  153-158. 
    Asbtract ( 2043 )  
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    The main geological hazard types include mining subsidence,unstable rock masses,earth surface crack,landslide,solid waste residue in Chimashan copper mineAfter giving a brief overview of the basic profile and geological conditions of the mine,the paper focus on analysis of their causes,status,harm as well as failure mode,and the stability factors are also calculated for the unstable rock masses and potential landslide at present conditionsThe overall goal,basic principle and scheme of the treatment engineering are proposed by comprehensive evaluation of the strata lithology,surrounding environment and stability degree of those hazard bodies in prevention areaThe comprehensive prevention engineering measures include slope surface shaping,cutting slope and unloading,backfilling and back pressuring,blast demolishing,retaining and reveting,intercept dam enclosuring,draining and waterproofing,ecology restoring and engineering monitoring,and the engineering arrangement and detail structure parameters of the control measures are also introducedAccording to the stability calculating results of treated slopes,the safety factors can meet the requirement of the specificationsThrough the implementation of the scheme,not only the security risks of geological hazards can effectively be eliminated,but also the ecological environment can all be restored in the mineThe prevention mode can provide reference for the geological environment protection and hazard treatment of the similar closed mine.
    Analysis on Stability of Tailing Pond Under Earthquake With FLAC3D
    WANG Bing-Wen, ZHANG Lei, ZHAO Yan-Chang, LI Jian-Hui, FU Yan-Rong
    2010, 39(4):  159-162. 
    Asbtract ( 1929 )  
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    Numerical simulation is one of the effective methods to analyze the stability of geotechnical engineer.The finite difference software FLAC3D（Fast Lagrangian Analysis of Continua in 3 Dimensions) was applied to establish a 3D-mesh model and a fluid-solid model of an iron mine tailing pond,and the constitutive relation of tailings was described by the Mohr-Coulomb model to analyze the stability of tailing dam under earthquake.The results indicate that the tailing pond has been on the whole stable under strong earthquake,except some partial liquefaction which can possibly lead to breaking.And the most active area of tailing pond is in the edge of dam base or dam crest.The results also show that it is feasible to analyze the overall stability of tailing pond under earthquake action by means of  FLAC3D,which provides an access to analyze some dynamic problems of tailing pond.
    Fault Tree Analysis on Blasting Operations at Large-scale Open Metal Mines
    WANG Wen-Cai, ZHANG Shi-Ming, ZHOU Lian-Chun, WANG Rui-Zhi, LI Mo-Ran, CAO Hua
    2010, 39(4):  163-166. 
    Asbtract ( 1786 )  
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    The security system engineering was applied and the fault tree analysis method of metal mine blasting was introduced.The common accident cases were analyzed by the accident tree,and the blasting accident tree and the successful case tree were successfully drawn.Based on this,the minimum cut set and path set were found out,and finally the structure importance was analyzed so as to grasp the reason and the law of the accident.This can provide a scientific and reasonable basis for blasting design,implementation,and blasting safety management.Meanwhile,the blasting prevention measures and some technical measures to improve blasting effect were put forward to ensure blasting goal in metal mine.
    Research on Adsorption of  Cu 2+  and  Zn2+ with Insoluble Starch Xanthogenate
    WANG Lei, XIA Lu, LU Dong-Liang, , LI Jia-Yun
    2010, 39(4):  167-171. 
    Asbtract ( 1811 )  
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    The insoluble starch xanthogenate (ISX) has been synthesized by starch with epichlorohydrin as cross-linking agent and graft-copolymerized with acrylonitrileThe adsorption of Cu 2+  and  Zn2+ from simulated wastewater with ISX were investigatedThe optimum adsorption conditions of ISX for  Cu 2+  and  Zn2+ were determinedThe tests result showed that the adsorption of   Cu 2+  and  Zn2+ with ISX could be attributed to Langmiur isotherms type,and the adsorption kinetic was adapted to the second-order reactionMeanwhile,this adsorption belongs to the spontaneous physical absorption
    Assessment of the Heavy Metal Soil Pollution in Qingchengzi Lead-zinc Mine Area
    SHI Ping, WANG EnDe, WEI Zhong-Yi, YANG Chao-Qiang
    2010, 39(4):  172-175. 
    Asbtract ( 1965 )  
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    For the assessment of the heavy metal soil pollution,samples from the waste dump,tailing mine and its vicinity soils of Qingchengzi Lead-zinc mine area are selectedThe method of index of geoaccumulation and the potential ecological risk index were used to assess the heavy metal soil pollution and to provide a scientific basis for future pollution control and land reclamationThe results showed that the soil was polluted badly by the heavy metal elements of Cd,Pb,Hg and Zn in the areaThe contamination hazard grade of heavy metal in different area lies in the tailing area,the waste dump and its vicinity in turnAccording to the assessment,forestry is the first priority in vicinity of mine area,and then agriculture will be taken after the rehabilitation of heavy metal pollution
    Research of Microbiology Technology in Ecological Remediation  of the Abandoned Coal Mining Land
    CUI Shu-Jun, GU Li-Kun, LIAN You-Xuan, LI Gang
    2010, 39(4):  176-179+182. 
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    This paper introduces the mechanism of microbiology technology in the ecological remediation of abandon coal mining land,analyzes the influencing environmental factors of the ecological remediation,and discusses its assessment methodIn addition,the problems are also pointed out
    Enrichment Characteristics of Heavy Metals by Dominant Plants in Siding Lead-zinc Abandoned Mine Area
    CUI Xiao-Yan, GUO Wei-Jun, CHEN Xue-Jun
    2010, 39(4):  180-182. 
    Asbtract ( 1747 )  
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    Arming at the pollution of heavy metals of Guangxi Siding Lead-zinc abandoned mine area,some investigation on heavy metal content of dominant plants and the enrichment characteristics of heavy metals are carried outIt is determined that some tolerant species like,Cogon,Bothriochloa ischaemum,Malva verticillata,Polygonum flaccidum meism,Bermudagrass herb,Solanum nigrum,Pteris vittata Linn etccan be chosen as the pioneer plants to reclaim the wastelandIt can provide a scientific basis for the ecological environment recovery of the mine
    Experimental Study on High-intensity Magnetic Separation and Step-flotation for Meishan Tailings
    YANG Long, HAN Yue-Xin, YUAN Zhi-Tao
    2010, 39(4):  183-186. 
    Asbtract ( 1770 )  
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    Meishan iron ore contains much weakly magnetic minerals including hematite and siderite,which leads to high grade iron in tailings after high-intensity magnetic separationMuch hematite and siderite in tailings can not be recoveredThe high intensity magnetic separation test is made to re-concentrate the tailings,and then the step-flotation tests on HIMS concentrate are carried out to separate siderite and hematite from gaugesThe final concentrate,grading at 42.75%,is higher than that of MIMS scavenging separation in production,and weakly lower than that of HIMS roughing separationIt can improve the Fe recovery by 5% for Meishan beneficiation plant