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Volume 29 Issue 2
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GAO Qian, SONG Jianguo, YU Weijian, WANG Zhenghui. Design and numerical simulation of rock bolting and shotcrete for deep tunnels with high stress in Jinchuan Mine[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(2): 279-284.
Citation: GAO Qian, SONG Jianguo, YU Weijian, WANG Zhenghui. Design and numerical simulation of rock bolting and shotcrete for deep tunnels with high stress in Jinchuan Mine[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(2): 279-284.
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Design and numerical simulation of rock bolting and shotcrete for deep tunnels with high stress in Jinchuan Mine

  • 1.University of Science and Technology of Beijing Beijing 100083 China 2.Key Laboratory of Ministry of Education on High Efficient and Safety Mining for Metal Mines Beijing 10083 China 3.Mining Institute of Jinchuan Group Ltd Jinchang 737100 China

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  • Published Date: February 14, 2007
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  • Considering the deformation characteristics of deep tunnels with high stress in Jinchuan Mine,a synthetic controlling technology composed of pre-stressed cables was put forward.In order to forecast supporting effect and parameter optimization,numerical simulation technology was studied and executed for rock bolting and shotcrete tunnels with high stress and jointed creeping rock masses.Two supporting types and their parameters were given first.Then subsectional softening model and parameter of dilatancy were adopted based on crash creep characteristics of joined rock masses and supporting strength index of anchorage body were put forward.Finally,1178 subsections of tunnels with high stress were analyzed and evaluated with the above-mentioned numerical method and technology,and parameters were optimized.
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