Results 41 to 50 of about 3,077,132 (240)
International Journal of Coal Science & Technology, 2023 Coal and gas outburst is a complex dynamic disaster during coal underground mining. Revealing the disaster mechanism is of great significance for accurate prediction and prevention of coal and gas outburst. The geo-dynamic system of coal and gas outburst
Lin Xu +6 more
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Damage Evolution of Coal with Inclusions Under Triaxial Compression [PDF]
Rock Mechanics and Rock Engineering, 2021 AbstractAlong with the advance of the working face, coal experiences different loading stages. Laboratory tests and numerical simulations of fracture and damage evolution aim to better understand the structural stability of coal layers. Three-dimensional lab tests are performed and coal samples are reconstructed using X-ray computer tomography (CT ...
Zhao, Yufeng +5 more
openaire +2 more sources
Experimental study on damage characteristics of coal sample by shock wave impact
, 2021 On the basis of designing and transforming the bench shock tube in the laboratory, a test system for coal sample damage and destruction under shock pressure was built, and shock step pressure characteristics under different driving gas conditions and ...
XIE Beijing, DING Hao, CHEN Dongxin, YANG Yu
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矿业科学学报, 2021 The coal power industry, while promoting the national economic and social development of China, also causes environmental pollution, thus threatening the health of employees and nearby residents.In order to evaluate the impact of occupational health ...
Wang Wei +3 more
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Experimental study on permeability and mechanical properties of coal under different pore pressure and confining pressure [PDF]
, 2023 With the continuous increase of coal mining depth, the response of coal mechanics and the mechanism of gas migration have become extremely complicated. In order to explore the coal damage evolution and gas seepage mechanism under the integrated operation
Xuehai WU +5 more
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Effect of Desorption Damage on the Kinetic Characteristics of Coal Particle Gas Desorption
ACS Omega, 2023 There is a positive feedback mechanism of desorption, pulverization, and redesorption in the process of coal and gas outburst. The coal pore structure changes to some extent in the process of coal pulverization and has a related impact on the dynamic ...
Xuan Liu +6 more
semanticscholar +1 more source
Damage Characteristics of Outburst Coal Sample Containing Gas Under Different Loading Rates
, 2020 To study the influence of loading rate on the damage characteristics of outburst coal containing gas, the uniaxial compression experiments were carried out for coal body with five loading rates, including 0.001 mm/s, 0.005 mm/s, 0.01 mm/s, 0.05 mm/s and ...
WANG Yeping, LIU Xiangwen, CHEN Deren, WANG Dengke, YANG Yunlin, CHEN Dezhong
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Meikuang AnquanIn order to study the mechanical properties, damage mechanism, and fractal characteristics of coal under repeated drying saturated conditions, through theoretical analysis and laboratory experiments, repeated non-destructive soaking, ultrasonic velocity ...
Zhengping BAI, Ning WANG
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Law of overburden failure and roof water damage in Yuandatan Coal Mine
, 2022 The Jurassic coal field in northern Shaanxi Province is generally threatened by roof water damage, so it is vital to study the law of overburden failure for mine safety production.
LIU Yang +5 more
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Study on Evaluation and Prediction of the Degree of Surface Damage Caused by Coal Mining
Frontiers in Earth Science, 2022 Surface damage caused by coal mining is one of the problems perplexing ecological environment restorations in coal mining areas. Accurately evaluating and predicting the degree of surface damage induced by coal mining with reasonable and correct indexes ...
Xiaoshen Xie +12 more
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