Results 21 to 30 of about 163,434 (247)
Comprehensive safety evaluation method of surrounding rock during underground cavern construction
Underground Space, 2021 The deformation instability of surrounding rock and the collapse of rock blocks are two common failure modes observed during the construction of underground caverns.
Qingwen Ren +6 more
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Support Technology of Long Bolt in Roadway under Crushing Condition [PDF]
E3S Web of Conferences, 2020 In order to solve the problem that the roadway roof is large and easy to collapse under crushing conditions. Test shows that: Under the crushing condition, a considerable part of roadway surrounding rock deformation is in a given deformation state.
Pengde Sang
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Study on Deformation Characteristics of Surrounding Rock of Roadway with Coal–Rock Interface
Sustainability, 2023 Surrounding rock of roadway with a coal–rock interface is a common form in coal mines. In order to determine deformation characteristics and obtain the control principle of roadways with a coal–rock interface, the interface between the roof and coal seam was added to simulate the weak cohesion between the stratum.
Tuo Wang, Jucai Chang, Yijun Guo
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Stress and Deformation Characteristics of Tunnel Surrounding Rock under Alteration
Sustainability, 2023 Based on a typical project in an altered rock area, this study carried out numerical simulations using the FLAC3D software to calculate the changes in the stress field, deformation field, and plastic zone of the surrounding rock during the unsupported and supported excavation of a water transfer tunnel.
Yapeng Chen +5 more
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Minerals, 2021 To study the occurrence process, as well as the temporal and spatial evolution laws, of rockburst disasters, the roof deformation of continuous heading roadways during rockburst was studied through a physical similarity simulation test with a high ...
Yaobin Shi +4 more
semanticscholar +1 more source
Generalization of trends in the influence of geomechanics factors on the choice of operation modes for the fastening system in the preparatory mine workings [PDF]
, 2000 Purpose. Substantiation of the mechanism of loading the preparatory mine working support to optimize its deformation-strength characteristics based on the calculation of the stress-strain state of the “massif – support” system.
Chervatiuk, V +4 more
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Advances in Civil Engineering, 2022 Large compressive deformation of tunnels is a phenomenon involving plastic deformation and failure of surrounding rocks and often refers to the weak surrounding rock self-bearing capacity loss or partial loss.
Hao Tang +3 more
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Advances in Materials Science and Engineering, 2020 The stability control of a soft rock roadway is a crucial problem for sustainable utilization of limited coal resources in deep mining practices. To solve it, the soft rock types and failure mechanism of −890 entrance surrounding rock have been analyzed,
Yong Zhang +7 more
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矿业科学学报, 2023 This study analyzes the large deformation failure mode and mechanical mechanism of tunnel surrounding rock, with an aim to lessen the damage of high ground stress soft rock tunnel support structure and large deformation of surrounding rock in southwest ...
Tao Zhigang +4 more
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Numerical Analysis and Control Study on Surrounding Rock Deformation of Deep Soft Rock Roadway [PDF]
E3S Web of Conferences, 2021 Aiming at the problem of large-scale deformation of the track and alleys in the East Second Mining Area, the numerical analysis method is used to analyze the stress and deformation law of the roadway. The results show that the critical depth of the roadway deformation is 800m, the shear stress of the deep roadway is about 8.7MPa in the left and right ...
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