Results 1 to 10 of about 324,854 (212)
Experimental and analytical investigation on the coupled elastoplastic damage model of coal-rock
Fracture and Structural Integrity, 2020 In this paper, a novel coupled elastoplastic damage model for coal-rock is proposed to predict the deformation and potential disaster in coal mining. The conditions of small deformation and thermodynamic potential are considered, as well as the coupling ...
Yundong Shou +2 more
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Meitan xuebao, 2023 Currently the law of heat and mass transfer and the analysis of coal damage in the process of injecting low-temperature liquid nitrogen (LN2) into the borehole of coal seam are the key problems to be solved urgently for the application of LN2 in the ...
Yuzhou CONG +7 more
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Meitan kexue jishu, 2023 Water-rock interaction is common seen in underground mining engineering activities. In order to study the mechanical properties, damage characteristics and deterioration mechanism of coal-rock combined samples under water-rock interaction, axial ...
Guangbo CHEN +5 more
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Experimental Study on Coal Permeability and Damage Evolution Under the Seepage-Stress Coupling
Frontiers in Earth Science, 2022 In order to study the damage evolution law of coal under the seepage-stress coupling, this paper adopted the rock servo triaxial test system to conduct permeability test for full stress-strain process on 10 sets of coal specimens using steady-state ...
Fujin Lin +5 more
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Study on periodic stress bearing characteristics of water-immersed coal body
Meikuang Anquan, 2023 For the long-term progressive damage of the coal pillar dam body of the underground reservoir under the action of water immersion-periodic stress, taking a mine in Shaanxi Province as the engineering background of the underground reservoir project, the ...
LIU Xiaofei, XUE Zongjian, NIU Tengchong
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Subsection amplification cyclic deterioration mechanism of creep damaged coal
Meitan kexue jishuUnder the excavation effects of deep coal and rock, obvious creep damage is produced under the action of high stress for a long time and the sudden destabilization of the creep-damaged coal body induces rock burst disaster under the mining action in ...
Yangyang LI +5 more
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Study on creep failure of coal specimen subjected to step loading
Meikuang Anquan, 2021 In order to further study the energy evolution and damage failure of coal specimen subjected to step creep loading, the Shimadzu AX-G250 test machine was used to carry out the creep test of coal specimen subjected to step loading. Test results show that
DUAN Huiqiang
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Applied Sciences, 2021 To study the damage and destruction behavior of small coal pillars in coal mine roadway driving along gobs under long-term in-situ stress and multiple engineering disturbances, an unconfined compression experiment under a discontinuous cyclic load was ...
Zhe Xiang +3 more
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Experimental study on damage characteristics and energy evolution of coal by ultrasonic power
Meitan kexue jishu, 2023 In order to study the mechanical damage characteristics and energy evolution law of coal after ultrasonic fracturing, uniaxial compression experiments were carried out on fractured coal with different power by using electronic universal pressure testing ...
LI Shugang +6 more
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Deformation and damage dynamic characteristics of coal–rock materials in deep coal mines [PDF]
International Journal of Damage Mechanics, 2017 The deformation and damage characteristics of surrounding rock grow gradually with the increase of mining depth, and the mechanical behavior and damage mechanism of coal–rock materials vary greatly. In order to reveal the deformation and damage dynamic characteristics of coal–rock materials in deep mines, the macroscopic deformation characteristics of
Jiankun Xu +5 more
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