Results 21 to 30 of about 49,160 (240)
Numerical simulation study on support design of deep roadway
IOP Conference Series: Earth and Environmental Science, 2020 Abstract In order to solve the problem of large deformation in deep roadway mining, the stress and deformation of surrounding rock after roadway excavation and support are studied by numerical simulation. The results show that the displacement of roof and two sides is large after the roadwayexcavation.
Renliang Shan +4 more
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Impact of Depressurizing Boreholes on Energy Dissipation in Deep Roadway
Geofluids, 2022 Depressurizing borehole drilling is an effective approach to control the large deformation of deep roadway. It can transfer the high stress in the proximity of the roadway into the deep stable rock masses. However, it should be noted that the borehole drilling will inevitably cause the secondary damage to roadway.
Meng Wang +6 more
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Evolution law of surrounding rock bearing circle and support technology of deep roadway
Meikuang Anquan, 2023 Taking Guotun Coal Mine -670 auxiliary horizontal track roadway as the engineering background, the stress change of roadway surrounding rock is analyzed through the mechanical model of bearing circle, and the stress change of roadway surrounding rock ...
SHEN Shibao +4 more
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Numerical methods of geomechanics tasks solution during coal deposits’ development [PDF]
, 2016 Purpose. Generalization of numerical modeling of geomechanical processes in the vicinity of mine workings by finite elements method and making recommendations for substantiation of suitable construction and behavior of rock massif physical model ...
Bondarenko, V +4 more
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Energies, 2020 Pingdingshan mining area is one of the typical deep mining areas in China, and most of the mines in this area are troubled by the difficulties of the deep-soft-rock roadway support.
Qingxian Huang +4 more
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Rock burst criteria and control based on an abutment‐stress‐transfer model in deep coal roadways
Energy Science & Engineering, 2020 With the increase in cover depth of the coal seam, more and more rock bursts have occurred in deep coal roadways. The conventionally used passive preventive measures are not sufficient to reduce rock burst hazards in deep coal mines.
Ming Zhang, Fuxing Jiang
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Meitan kexue jishu, 2023 The prominent contradiction between high ground stress and low strength of surrounding rock in deep strata of coal mine leads to large deformation and instability disaster after roadway excavation.
Yanhe LI +3 more
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Advances in Civil Engineering, 2023 In view of the difficulty in controlling the surrounding rock stability of deep cross-measure roadways, a deep cross-measure roadway of the Wanfu coal mine, a typical high-stress mine, was monitored on site and analyzed under the original support scheme.
Wenzheng Du, Rui Pan, Hongjin Sun
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Stability Analysis of Roadway Groups under Multi-Mining Disturbances
Applied Sciences, 2021 The roadway stability has been regarded as the main challenging issue for safety and productivity of deep underground coal mines, particularly where roadways are affected by coal mining activities.
Yuantian Sun +7 more
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Deformation Characteristics and Control Mechanisms of Deep High‐Stress Large‐Span Roadways
Mathematical Problems in Engineering, 2023 Controlling the surrounding rock in soft rock roadways under deep high stress, strong rheology, and intensive mining is critical for the safety, efficiency, and economy of mine production. In this study, the mechanical properties, large deformation mechanism, and support countermeasures of surrounding rock in the high‐stress roadway in the Yuwu coal ...
Bo Yang, Jing Chai
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