Results 11 to 20 of about 12,436,754 (287)

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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Analysis of Crack-Characteristic Stress and Energy Characteristics of Sandstone under Triaxial Unloading Confining Pressure

Applied Sciences, 2023
The deformation and failure of underground engineering are usually caused by unloading. In this work, triaxial unloading confining pressure tests are carried out to simulate the failure process of rock mass caused by unloading, analyze the crack ...
Yanwei Duan, Guohua Zhang, Tao Qin
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Dynamic characteristics and energy evolution of granite subjected to coupled static–cyclic impact loading

Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023
In many underground rock projects, rock masses are subjected to coupled static–cyclic dynamic loading. In this paper, dynamic tests were carried out on granite specimens using a modified split Hopkinson pressure bar to study the dynamic characteristics ...
Xinyu Wang, Zhongyang Liu, Xicai Gao, Pengfei Li, Bin Dong   +4 more
semanticscholar   +1 more source

Mechanical Properties and Energy Evolution Law of Fractured Coal under Low Confining Pressure

Applied Sciences, 2022
To study the mechanical properties and energy evolution characteristics of the shallow fractured coal in the Western China mining area, a series of triaxial compression tests was carried out on fractured coal specimens.
Zhiqi Wang, Xufei Gong, Xuebin Gu
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Numerical Simulation of Rock Dynamic NSCB Test Based on a Self-Developed Dynamic Damage Model

Frontiers in Earth Science, 2022
Elucidating and understanding the dynamic fracture characteristics of rocks play an essential role in the application of rock engineering and geophysics.
Xuelong Hu, Xuelong Hu, Xuelong Hu, Minke Duan, Minke Duan, Minke Duan, Min Tu, Min Tu, Min Tu, Xiangyang Zhang, Xiangyang Zhang, Xiangyang Zhang, Ming Zhang, Ming Zhang, Wenyao Xu   +14 more
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Remarks on high energy evolution [PDF]

Journal of High Energy Physics, 2005
We make several remarks on the B-JIMWLK hierarchy. First, we present a simple and instructive derivation of this equation by considering an arbitrary projectile wave function with small number of valence gluons. We also generalize the equation by including corrections which incorporate effects of high density in the projectile wave function. Second, we
Kovner, Alex, Lublinsky, Michael
openaire   +2 more sources

Effect of fissure angle on energy evolution and failure characteristics of fractured rock under uniaxial cyclic loading

Scientific Reports, 2023
To study the influence of fissure angle on the rock damage process and energy evolution characteristics, uniaxial cyclic loading and unloading tests were conducted on fractured rock specimens with different prefabricated fissure angles. The stress–strain
Yong-qiang Zhao, Quansheng Li, Kai Zhang, Yingming Yang, X. Gu   +4 more
semanticscholar   +1 more source

Experimental studies of instability process and energy evolution of tunnels under true triaxial stresses: The role of pre-existed flaws

Frontiers in Earth Science, 2023
In the natural geological environment, there are many joints, faults and cavities. These natural defects will have an impact on the stability of tunnels.
Binglei Li, Jianing Li, Hongyuan Hu, Jinrui Gong, Tao Luo   +4 more
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Study on the energy evolution mechanism of coal and rock with impact tendency under different strain rates

Scientific Reports, 2023
To explore the strain rate effect of deformation and failure of impact prone coal rock, uniaxial compression tests and triaxial compression tests with different strain rates were carried out.
Kun Zhang, Yichen Zhang, Sen Zhang, Jianxi Ren, Liang Zhang, Renjie Zhang, Yuanquan Cui   +6 more
semanticscholar   +1 more source

Dynamic equations for nonassociated gas accumulation

Petroleum Exploration and Development, 2008
Nonassociated gas can be classified as conventional gas accumulation with displacement migration, source-contacting gas accumulation with piston-type migration, and shale gas accumulation with the displacement and piston-type migrations.
Jin-chuan ZHANG, Xuan TANG, Rui-kang BIAN, Bo XU, Hui XUE, Hai-kuan NIE, Sheng-ling JIANG   +6 more
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