Results 51 to 60 of about 1,933 (209)
Basic characteristics of coalfield tectonic framework in China
矿业科学学报, 2016 The occurrence of coal-bearing strata in China is characterized by the variety of coal-bearing basins，the remarkable spatial and temporal differences of late tectonic deformations.The main controlling factors，which determine the tectonic framework of ...
Cao Daiyong +7 more
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Gas Adsorption-Desorption and Emission Law of Tectonic Coal under Different Degrees of Damage
Chemical Engineering Transactions, 2018 The purpose of this paper is to study the difference of tectonic coal with different degrees of damage (DoD) in terms of gas adsorption, desorption and emission.
Yang Li +3 more
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Deep Underground Science and Engineering, EarlyView.Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan +4 more
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Research on gas irradiation feature of tectonic coal
Procedia Engineering, 2011 AbstractUsing gas-diffusion experimental installation created by Chongqing institute of coal science research institute, in different pressure conditions, studied the rule of gas diffusion in tectonically coal. Got the characteristics of the gas diffusion in tectonically coal by analysis of the experimental data, and provided the basis for the gas ...
openaire +1 more source
Deep Underground Science and Engineering, EarlyView.A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian +6 more
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Meikuang Anquan, 2020 Taking 3# coal seam of eastern Qinnan block as the research object, based on the description results of CBM well drilling coring, the vertical characteristics and horizontal distribution of tectonic coal were studied, the influence of tectonic coal on ...
LIU Shiqi, SANG Shuxun, YANG Henglin, SANG Guangjie, QIAO Maopo
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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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International Journal of Mining Science and TechnologyIn composite coal seams, the gas transfer relationship of structural coal has a significant impact on gas extraction. Regarding the influence mechanism of multi-scale mass transfer (MSMT) of tectonic coal in composite coal seams on gas extraction, the ...
Yongfu Liu, Shouqing Lu
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Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
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Deep Underground Science and Engineering, EarlyView.In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu +6 more
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