Results 91 to 100 of about 2,183,848 (145)
, 2011 Hard rock generally performs ideal plastic character after the stress reaches its peak value with high confining pressure. Once the plastic strain satisfies certain condition, the brittle failure occurs, and the rock mass located in the residual region ...
Dai Qiang Deng, Ai Ping Yuan, Mao Wei Ji
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Aiming at the difficulties of large plastic failure range of surrounding rock and insufficient strength of bolt support system of the “strong roof and weak side” semi coal-rock roadway, taking 8# coal seam mining roadway of a certain mine as the ...
Bingyuan HAO, Xingyun REN, Ji ZHANG
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Analysis on Surrounding Rock Deformation of Shallowly-Buried Portal Part of Double-Line Tunnel
, 2011 Through studying the ground surface settlement monitoring for Fang Dou Shan highway tunnel Shallowly-buried Portal Part, this paper mainly discusses the deformation of surrounding rock range from ground surface to the arch crown of double-line tunnel ...
Lei Wang, Long Xian Xu, Le Min Ma
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Frontiers in Earth ScienceIn view of the problem of the plastic state of the surrounding rock of loess high-speed railway tunnels changing from hard plastic to soft-plastic, even in a flow-plastic state with increasing moisture content, and appearing collapse and large ...
Yuan Yang +5 more
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Layered rock mass is prevalent in tunnel engineering, where deformation and failure of surrounding rock are primarily governed by discontinuity structural planes, leading to significant anisotropy in deformation and strength characteristics.
Tian, Yun +4 more
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Tunnel construction subject to surrounding rock squeezing deformation can induce support cracking, intrusion, and collapse. Herein, the existing Wushaoling tunnel of Lanzhou–Wuwei second line railway and the new Wushaoling tunnel of Lanzhou–Zhangye third
Tiejun Yao +4 more
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To investigate the effect of rock mass rheology on the deformation of roadway surrounding rock, the -848 m charging rectifier chamber test roadway in a mine was taken as the engineering case.
Junhui Zou +5 more
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SymmetryDeep soft rock roadways at about 1 km depth experience significant deformation due to concentrated stress ahead of the working face and dynamic loads from the hard roof layer. We propose an integrated control method that couples directional roof cutting, which interrupts stress transfer with constant resistance, and large deformation cable ...
Li Jiang +7 more
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The mechanical and deformation behaviors of the surrounding rock play a crucial role in the structural safety and stability of tunnel shafts. During drilling and blasting construction, seepage failure and hard brittleness damage of the surrounding rock ...
Heqi Wang +9 more
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Research on Deformation Law of Surrounding Rock During Excavation of Tunnel [PDF]
Proceedings of the 2015 International Conference on Electromechanical Control Technology and Transportation, 2015 Yunping Wang, Deshen Zhao
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