Research progress of support theory and technology of the roadway surrounding rock based on the plastic zone control [PDF]
Meitan xuebaoWith the increasing depth of coal mining, the stability control of surrounding rock in deep roadway has become one of major problems in the mining field, and the effect of surrounding rock control in deep roadway is directly related to the safe ...
Weijun WANG +3 more
doaj +2 more sources
Deformation and Failure Mechanism of Surrounding Rock in Mining‐Influenced Roadway and the Control Technology [PDF]
Shock and Vibration, 2021 Aiming at the problem of surrounding rock deformation and failure of mining roadway and its control, a mechanical model of the circular roadway under the mining environment is established, and the implicit equation of the plastic zone boundary is derived.
Jicheng Feng +6 more
openaire +3 more sources
Geofluids, 2022 Aiming at the characteristics of large deformation and long deformation time under the mining influence of the 2254 east floor roadway surrounding rock, which under the condition of complex coal occurrence in Jiahe Mine.
Hai Wu +5 more
doaj +2 more sources
Research on Control Mechanism of Surrounding Rock of Deep Gob-Side Entry Retaining
Geofluids, 2021 To address the large deformation of the surrounding rock of deep gob-side entry retaining under high stress, lithological characteristics of the surrounding rock and failure model of support body and their evolutionary processes are analyzed through ...
Jianxiong Liu +6 more
doaj +2 more sources
Surrounding rock control technology of gob-side entry retaining in deep high mining face
Meikuang AnquanUnder the influence of multiple mining influences, the mining pressure is more intense and the surrounding rock deformation is large, which is easy to cause the surrounding rock instability of gob-side entry retaining in fully mechanized mining face.
Junhu ZHANG +5 more
doaj +2 more sources
Research on Control Technology of Large-Section Water-Bearing Broken Surrounding Rock Roadway
Applied SciencesWith the increasing depth of mining operations, the geological conditions of deep roadways have become increasingly complex. Among these complexities, the issues of fractured zones and groundwater are particularly critical, significantly contributing to ...
Wenqing Peng, Shenghua Feng
doaj +2 more sources
Meitan kexue jishu, 2023 The mining strata in the western mining area of China are mainly composed of Jurassic and Cretaceous strata. The strata are characterized by low strength, poor cementation and easy disintegration, which belong to weakly cemented rocks.
JI Hongguang +5 more
doaj +1 more source
Stability Control Mechanism of High‐Stress Roadway Surrounding Rock by Roof Fracturing and Rock Mass Filling [PDF]
Advances in Civil Engineering, 2021 Large deformation of roadway and coal bump failures have always been the focus in deep underground engineering. By considering the Lu’an mining district in China, the failure mode and stability improvement process of high‐stress roadways were analysed with the field tests and numerical simulations.
Fuzhou Qi +6 more
openaire +2 more sources
Aspects of energy requirements for rock drilling [PDF]
, 1974 Development of laboratory rock breakage techniques to relate energy and surface area produced by slow compression, drop hammer and stamp mill. A detailed study of laboratory rotary-percussive drilling in a wide range of rocks under different ...
Wootton, David
core +7 more sources
Study on failure characteristics and control technology of roadway surrounding rock under repeated mining in close-distance coal seam [PDF]
, 2022 In this study, taking the Sheng’an coal mine as an engineering background, the failure characteristics of the surrounding rock of a roadway under repeated mining in a close-distance coal seam is comprehensively illustrated through field measurements (e.g.
Li, Qiang +11 more
core +1 more source