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Table of Content

    15 November 2013, Volume 29 Issue 11
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    Research on the Safety Stoping Method of the Large and Thick Orebody of Lilou Iron Ore
    ZHU Guo-Tao, HAO Hong-Xing, WANG Xiao-Fei
    2013, 29(11):  1-4. 
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    The application of the long hole open stope filling later method of high phase in the Lilou iron ore is introducted.At the same time ,the stability of mining process of the large underground stope is researched at length.Accroding to the research findings,the width and height of the stope structure are unchanged.The ore room or pillar is divided into 2~3 sections,and they are recoveried respectively so as to achieve the desired effect and obtain good economic benefits.
    Analysis on the Mining Scheme of Liulou Iron Mine
    FAN Jin-Hong
    2013, 29(11):  5-8+13. 
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    The adaptive of short-hole shrinkage mining method and mining method employing fill are contrastive analyzed.The necessity application of approach cut-and-fill stoping method and upward layer filling method in Liulou iron mine is analyzed in detail.The scheme of layer filling method,the technology of recycling pillar of layer filling mthod,some relative main problms and improvement measures are discussed so as to deal with the safety problem of approach cut-and-fill stoping method,eliminate the risks in the mined-out area,improve the recovery rate,reduce the dilution rate,make the mineral resources be recoveried effectively.
    Research on the Stacked Arch Mining Method of Muti-sublevel and Multi-stope
    JIANG Ren-Yi
    2013, 29(11):  9-13. 
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    According to the actual production situation of multi-sublevel in mine,the mining method of multi-sublevel and multi-stope is put forward on the basis of the stress arch theory.The specific minging ways of stacked arch is analyzed in detail,the exploration transportation,ventilate,the mine production capactiy,the quantities of construction are discussed.The research results show that the length of the drop shaft and ventilation raise are increased so as to mining the combination sublevel by setting the centralized traffice levels and centralized level of return air,but it contributes to production management of stacked arch mining.The production of stacked arch mining is improved 40％~70％ than the sigle sublevle mining.In addition,the mining method can be formed during the the mining production,so there is no need to increase the mining construction engineering quantity by adopting the stacked arch mining method,and the safety situation of this method is better than the others.
    Research on the Filling Strip Mining Technology of Inclined Coal Seam of Complicated Fault under Building Group
    CHEN Shan-Le, WANG Hua-Jun
    2013, 29(11):  14-16+20. 
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    In order to prevent or reduce the influene of mining on the environment and other resources as much as possible and obtain the best economic and social benefits.Taking the 3#,4# Coal Seam Mining for instance,the layout working face of strip mining is discussed.The surface subsidence of different mining methods of 3#,4# Coal Seam is predicted by using the probability integral method,and the filling paramters of goaf is determined.
    A New Technology of Synthesis for Ethyl Thioglycolate
    HE Wei, ZHOU Gao-Yun, LIU Long-Li
    2013, 29(11):  17-20. 
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    Aiming at traditional high production cost, intractable production process, a new technology of synthesis for ethyl thioglycolate was put forward, using ethyl chloride, xanthate, and monoethylamine as raw material. The results showed that: with ethyl chloride, xanthate, monoethylamine dosage of 1〖DK（〗∶〖DK）〗0.98〖DK（〗∶〖DK）〗1.10, esterification temperature at 60 ℃, amination temperature at 40 ℃, ethyl thioglycolate was synthesized, which has good performance in collecting sulfide minerals, and can be used as collectors for sulfide minerals flotation.
    Numerical Simulation of Flowing Field in Polyconical Cyclone Based on CFD
    JIANG Ji-An, ZHAO Tian-Biao, YANG Xing-Hua, LIU Pei-Kun, LIU Mei-Ru
    2013, 29(11):  21-24. 
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    A new kind of polyconical cyclone was presented in separation of channel dredging slurry in this paper, aiming at its characteristics of particles fine disseminated and distribution in a wide range. Based on Reynolds Stress Model, the numerical simulation of the three-dimensional flow inside the cyclone was provided by using the software of Fluent, the pressure field and velocity field distribution characteristics was obtained and verified by comparing the simulated results with the experiments, which provided theoretical basis for further optimizing design of this type of polyconical cyclone.
    Geometric Equlivalent Method of the Noncircular Cross Section Surrounding Rock Stress Caculation
    JI Wei-Wei, LOU Xiao-Ming, CHEN Peng-Hui
    2013, 29(11):  25-33+50. 
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    The accuracy of stress caculation results of geometric equlivalent method of different sections are analyzed by adopting the fininte numerical simulation method the support of ABAQUS software.So,the advantages and disadvantages,scope of application and the improvement direction of stress caculation by using the geometric equlivalent are proposed.The research resuls show that,the stress caculation of noncircular cross section is converted to caculating the stress of circular cross by the geometric equlivalent method.On the whole,the principle of the algorithm is simple,and it is no difficult to adopt the algorithm to solve the practical problems.
    Prediction of the Rock Burst Tendency of Jiguanzui Gold Ore
    YUAN Lei, WANG Xuan, YUE Shu-Yu, LI Pei
    2013, 29(11):  34-36+50. 
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    The research achievements of rock burst of domestic and foreign are referenced.The ore-bearing rock that is going to enter deep mining stage of Jiguanzui gold ore is analyzed comprehensively.The possibility of rock burst is predicted by adopting the rock burst criteria which has engineering practical. The conditions and influencing factors of rock burst are analyzed at length,and some effective measures are proposed.
    Research on the Geological Disaster Governance of the Mining Area of Shiguai
    SONG Yu-Chen, LI Yu-Yan, LI Qing, REN Jing-Cun
    2013, 29(11):  37-41. 
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    Engineering Technology of Inner Mongolia；3.Land and Resources Bureau of Kazak Autonomous Prefecture of Yili The main types and characerisitics of geological disasters of the mining area of Shiguai is investigated.The infulence of resource development of the mining area of Shiguai in the geological environment is analyzed detailly.Some relative feasible schemes and suggestions of the geological environment governance in the mining area of Shiguai are proposed at the basis of tackling of geological disaster.