Results 41 to 50 of about 823 (175)
Meikuang AnquanIn order to solve the problem of deep high stress argillaceous soft rock floor drainage roadway affected by mining disturbance, taking the layout optimization and surrounding rock control of deep argillaceous soft rock floor drainage roadway in Libi Coal
Liangshan LI +5 more
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Deep Underground Science and Engineering, EarlyView.Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu +4 more
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Gong-kuang zidonghua, 2018 In order to improve calculation efficiency of underground rock engineering parameters, displacement inversion calculation of rock mass parameters was carried out by orthogonal experiment.
WU Genshui +4 more
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Study on bearing capacity characteristics of steel structure support in soft rock roadway
Energy Science & Engineering, 2021 When the soft rock roadway in underground mine is supported by steel frame, the bearing capacity of steel structure is the key to the success of roadway support.
Ya‐bin Wu +5 more
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Energy Science &Engineering, EarlyView.This study mainly explores the instability characteristics of roadways near faults in the working face. Taking the 51104 transportation roadway of the 51104 working face in Shengxin Coal Mine as the main research object, through theoretical analysis, borehole inspection, numerical simulation and on‐site mine pressure observation, the instability ...
Shuaifeng Yin +4 more
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Energy Science &Engineering, EarlyView.This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
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Meitan xuebaoThe sedimentary rock strata of the coal measure are generally characterised by significant argillity, high water content and weak lithology. The problem of controlling the stability of the surrounding rock in soft rock argillation roadways has become ...
Guichen LI +6 more
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Fracturing of the Soft Rock Surrounding a Roadway Subjected to Mining at Kouzidong Coal Mine
Advances in Civil Engineering, 2020 The fracture development and distribution around the deep soft rock roadway are pivotal to any underground design. In this paper, both field investigation and numerical simulation were taken to study the fracture evolution and rock deformation of a coal ...
Zhili Su +4 more
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Analysis of Impact Mechanism and Energy Evolution Characteristics of Different Coal-Rock Systems
Meikuang Anquan, 2020 To further study the impact mechanism and energy evolution characteristics of different coal-rock systems, theoretical calculation and RFPA numerical simulation methods were used to compare and analyze different coal-rock systems from the energy point ...
WEI Hui
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Research on Pillarless Mining by Gob-Side Caving under Soft Rock Roof Conditions: A Case Study
Applied Sciences, 2023 In China, soft rock roof makes up the majority of coal mine roof, yet it is easy to break due to low strength and poor integrity. As such, it is difficult for the traditional pillar-based roadway protection means and pillarless mining techniques to ...
Jian Hao +6 more
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