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Table of Content

    15 November 2016, Volume 31 Issue 11
    Research on half pressing slope inner dumping mining process in Pingshuo East Open-pit Mine
    CAI Guangqi, FU Xinhua, ZHAO Dengjuan
    2016, 31(11):  1-6. 
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    Abstract: Combining with the actual geological conditions in Pingshuo East Open-pit Mine, the mine builds the inner dumping mode of half pressing slope, analyzes the transportation cost and re-stripping cost when the 4# and 9# coal using half pressing slope inner dumping mining, and obtains that two ways in the economy are better than the whole pressing slope, and presents all the 9# coal mining ditch program.

    Prevention and control measures of slope stability in Huolinhe North Open-pit Coal Mine

    LIU Zhihua, CHEN Yongxiang, ZOU Tianxu
    2016, 31(11):  7-10. 
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    Abstract: With the continuous extension of mining engineering, Slope stability and security have become the important factors that affect north mine development at present and in the future. According to different characteristics of slope engineering in the mining area, the article presents the reasonable slope stability control scheme to ensure safety in production.

    Analysis on slope control and stability with weak intercalated layer
    JIN Aibing, LIU Changyue
    2016, 31(11):  11-15. 
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    Abstract: Aiming at the present situation of south slope in Pingshuo East Open-pit Mine, the mine proposes the phased large-scale cutting slope. Using the limit equilibrium method and discrete element method , the article analyzes the slope stability under different back pressing height. The results show that gravel back pressing method can effectively improve the slope stability, control the shear destruction of soft interlayer and protect the safety of the transportation platform. And the reasonable gravel back pressing height is 10 m.

    14 stage station shift project in the eastern area of Fushun West Open-pit Mine
    YIN Youde
    2016, 31(11):  16-18. 
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    Abstract This article introduces the operation process of 14 stage station north shift project in the eastern area of Fushun West Open-pit mine. From the economy and technology aspect, the author analyzes and discusses 14 stage station north shift project and presents the suitable mining scheme.

    Slope stability analysis in Weijiamao Open-pit Coal Mine
    LIU Yong, ZHOU Xide
    2016, 31(11):  19-22. 
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    Abstract: Aiming at the actual project geology and mining situation in Weijiamao Open-pit Coal Mine, the article analyzes the major factors and failure mode of affecting the slope stability. By using ANSYS software, the mine analyzes the numerical simulation of first mining area mining slope, which provide a theoretical basis for future slope stability in Weijiamao Open-pit Coal Mine.

    Feasibility study on intermediate bypass transportation system in Weijiamao Open-pit Coal Mine
    ZHOU Xide, LIU Yong
    2016, 31(11):  23-25. 
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    Abstract: Intermediate bypass system can effectively shorten the transportation distance, reduce transportation costs, improve economic benefit. The article introduces geology condition, production technology and mining status in Weijiamao Open-pit Coal Mine, gives the application conditions of intermediate bypass transportation system. By comparison and analysis ,Weijiamao Open-pit Coal Mine is suitable for intermediate bypass transportation system application .

    Production planning and effect factors analysis in open-pit coal mine
    LI Ning, SUN Jinliang
    2016, 31(11):  26-28. 
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    Abstract: Through analyzing production planning steps in open-pit coal mine and making the production plan more reasonable and scientific, the mine makes the production plan to ensure the completion of the stripping amount and the balanced development of stripping engineering.

    Measures of improving per unit area yield in Sandaoling Open-pit Mine
    CUI Yue, SUN Jinliang
    2016, 31(11):  29-31. 
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    Abstract: After adopting car transportation, stripping production layout development is not balanced in Sandaoling Open-pit Mine. The article analyzes equilibrium stripping production development layout to ensure the raw coal output stable from the work loading line, the optimization of transportation system, mechanical and electrical technology, staff skill training operation, production scheduling, etc.

    Initial platform construction of belt conveyor in open-pit mine dump
    WU Jianyi, YANG Jianming, JIN Pengqing, QIU Chunfu
    2016, 31(11):  32-34. 
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    AbstractThe article combined with dumping process innovative scheme implement results in Xiaolongtan Open-pit Mine, in 1415 platform ascending segment to 1440 platform, using 912 belt conveyor to construct the initial platform of belt conveyor in 1440 platform, and makes full use of dumping machine moving forward to make the belt conveyor extended to the maximum length, which achieves a complete belt conveyor initial platform. The scheme saved the transportation cost for enterprise, realized the two platforms alternating dumping, and effectively relieved the dumping pressure.

    Effect factors analysis of production process to restrict production capacity in Sandaoling Open-pit Coal Mine
    SUN Jinliang
    2016, 31(11):  35-37. 
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    Abstract: Through analyzing production process system, from the mining loading, transportation, dumping production process ,the article calculates the practical and theoretical output, through the contrast analysis, and puts forward the reasonable technical measures, in order to improve mine production capacity and guarantee the stability of raw coal production.

    Writing ideas of conservation scheme on change of soil and water in Daqiang Coal Mine construction project
    CHEN Dong
    2016, 31(11):  38-41. 
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    Abstract: Taking the compilation of soil and water change conservation plan in Daqiang Coal Mine as an example, this article introduces the available reference from the aspects of determining the range of responsibility , soil erosion predictiondetermining the control goal, setting prevention measures, preparing the investment estimate, etc.

    Analysis on 220t mining truck retarder brake principle and some faults
    LIU Xi, ZHANG Huaming, YU Yang
    2016, 31(11):  42-44. 
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    Abstract: Taking 220 t AC drive electrical wheel dump trucks which produced by the United States TEREX company as the example, the article introduced the retarder brake (electric braking) working process and principle, analyzed the electrical faults that were prone to occur during the process, and presented some improvement measures.

    Application of BP neural networks in Weijiamao Open-pit Mine
    WANG Zhuoyu, JI Xiancheng, WANG Yongli
    2016, 31(11):  45-49. 
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    Abstract: The article introduces the work principle, basic algorithm and network design of BP neural networks in artificial neural network technology, and lists the application of BP neural networks in the output prediction, slope stability, the determination of the slope angle of open-pit mine and other engineering practices. Prediction results are similar to the actual situation, which has a certain science.

    Analysis of shovel direction current reactive power compensation in Open-pit Mine
    LI Zhidi, LI Yawu, GAO Min, HU Beibei
    2016, 31(11):  50-52. 
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    Abstract: This article mainly introduces the structures and functions of the reactive power compensation system on P&H 4100XPC shovels used in Pingshuo Coal Mine, and illustrates the RPC system's reactive power detection, multi-level and rolling steps compensation, which will possibly offer some ideas for the electrical system design of relevant equipment and the equipments maintenance work.

    Development and key techniques of deep trough belt conveyor

    SONG Guanting
    2016, 31(11):  53-56. 
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    Abstract: Based on the analysis of the development process of deep trough belt conveyor, we analyzed the mechanism of deep trough belt conveyor with large inclination angle, and explained that deep trough belt conveyor was used on both thin and wide bandwidth. The article introduced the structure and application scope of the idlers which recommended by the national industry standard, and summarized the selection principles of driving devices, rollers, conveyor belts, cleaning devices, and the key techniques of setting reverse thrust rollers, head baffles, anti rolling device materials design.

    Design of DTH drilling rigs working parameters acquisition system in Open-pit Mine
    LI Yanping
    2016, 31(11):  57-59. 
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    Abstract Based on the characteristics of DTH drilling rigs, the mine designs a set of work parameter acquisition system of parameter monitor in real time, record and abnormal data alarm, which provide reliable data source for optimizing parameters and improving the equipment performance. Practical application proves that the system performs stably and reliably.

    Line reconstruction of MT4400 truck drive system
    ZHANG Jing, DU Xiao, LIU Laiquan, HAN Peng
    2016, 31(11):  60-62. 
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    Abstract: In order to reduce 179 drive card and 173 digital signal card burned, we add four groups protection insurance in the drive line of MT4400 truck, which can protect 179 drive card and 173 digital signal card and effectively reduce the cost of maintenance and repair work.

    Research on the numerical simulation of pipe butt welding port
    ZHAO Lei
    2016, 31(11):  63-65. 
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    Abstract: In the daily production work of mines, cross welding of two pipes is a common problem. Ensuring the smaller butt gap, smooth welding interface is to improve the welding quality of fruit core requirements. This article introduces the application of the pipe butt welding port in the production from the numerical simulation research of pipe butt welding port .

    495HR electric bucket rod plane head structure improvement and welding process
    DONG Xin
    2016, 31(11):  66-69. 
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    Abstract: In view of the insufficiency of 495 HR electric bucket rod design structure, the article analyzes the frequent fault of electric bucket rod head plane crack, and gives the solutions and corresponding welding repair process, introduces in detail the matters needing attention in the process of repair, which provides the effective reference experience for welding repair work of excavator type mine equipment large structure.

    Spontaneous combustion cause and prevention measures in Shengli East No.2 Open-pit Coal Mine
    LIU Shifeng
    2016, 31(11):  70-72. 
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    Abstract: Based on the data collection and analysis of coal seam quality in Shengli East No.2 Open-pit Coal Mine, from internal factors, geological factors, mining factors , the article explored the possible causes of coal seam spontaneous combustion,  and chose different prevention measures from mining technology and fire prevention two aspects, which provide a reference for the prevention of coal seam spontaneous combustion in open-pit mine.

    Geological environment restoration control in Shangbao Coal Mine

    CHEN Guoying, ZHANG Lei, LIU Lunhua
    2016, 31(11):  73-76. 
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    Abstract: Based on the analysis of hydrology and engineering geological conditions in Shangbao Coal Mine, the mine classified the hydrogeological conditions and engineering geological conditions as medium type, and carried out the mine geology environmental protection and restoration project management and monitoring engineering management on cave mouth, mining subsidence areas, waste rock field, open up roads and other places, which obtained better environmental benefits, social and economic benefits.

    Practice of safety quality standardization in Guotou Hami No.1 Mine

    LI Bo
    2016, 31(11):  77-79. 
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    Abstract: Combining with the operating characteristics of coal mine enterprises, taking safety quality standards construction as the research object in Hami No1. Mine safety risk control project, the mine carries out safety quality standardization work practice, gradually develops and forms a complete set of safety and quality management systems and methods.

    Discussion on the management experience of safety production standardization of civil explosive goods

    MA Chuanxian
    2016, 31(11):  80-83. 
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    Abstract: The article elaborates how to do the related work of safety production standards in the civil explosives enterprises. From the enterprise safety management standardization, safety technical standards, equipment safety standardization, environment occupational health safety standards and the safe operation standards five aspects, the article discusses how to implement the safety production standardization in civil explosives enterprises. 

    Working environment and safety management in East Pingshuo Open-pit Mine

    MA Haiyuan, LIU Guo
    2016, 31(11):  84-86. 
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    Abstract: Safety management cannot be separated from the working environment, which directly affects the effectiveness of safety management. This article analyzes the safety problems of working environment and presents the measures of improving the working environment to improve the construction level of safe type mines and ensure the sustained and healthy development of the mines.

    Economic comparison and selection of heat source schemes of heat engineering in Xiwan Open-pit Mine

    WANG Aiai
    2016, 31(11):  87-90. 
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    Abstract: Combining with heat engineering in Xiwan Open-pit Mine, according to the field condition, the article presents  four heat source schemes (coal-fired boiler, gas boiler and power plant for steam and power plant building first station to supply hot- water), and carries out  on comparing from the safety, technology, economy, feasibility aspects.

    Study on road design and construction in open-pit mine

    YANG Guangyu
    2016, 31(11):  91-93. 
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    Abstract: The open-pit mine road has the characteristic of complex terrain, large slope, large load, more bend, which has more complex, more difficult than common road in design and construction aspects. The article researches and discusses the design and construction of the open-pit mine road.

    Feasibility  analysis on CBM deposit feature and ground drainage in Niuchang Yigu Mining Area

    FU Dengwen
    2016, 31(11):  94-96. 
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    Abstract: On the basis of geological exploration and CBM parameter well testing data in Niuchang Yigu mining area of Yunnan province, the article discusses the occurrence conditions of the main exploitation target coal seams No.1 and No.5-c, and estimates CBM resource. We suggest that the mine carry out ground drainage test after successful experience underground to achieve coal and CBM comprehensive exploitation and utilization.