Results 31 to 40 of about 132,626 (258)

Study on the damage characteristics of gas-bearing shale under different unloading stress paths.

PLoS ONE, 2019
In order to understand the influence of unloading on the mechanical properties of shale rock, triaxial unloading tests under different stress paths were conducted.
Yintong Guo, Lei Wang, Xin Chang
doaj   +1 more source

Numerical Investigation on the Hydraulic Fracture Evolution of Jointed Shale

Advances in Materials Science and Engineering, 2021
Joints are a common structure of heterogeneous shale rock masses, and in situ stress is the environment in which heterogeneous rock masses can be found. The existence of joint plane and confining pressure difference influences the physical properties of ...
Xiaoxi Men, Jiaxu Jin
doaj   +1 more source

Study on the characteristics of gas permeability of coal under loaded stress [PDF]

, 2017
The #3 coal seam of Jinsheng Rundong Ltd. of Jin-Coal Group in Shanxi Province, China, has high gas content and pressure; however, it has a low gas permeability, which can easily cause gas enrichment and may cause accidents of coal and gas outbursts.
Li, Dengke, Li, Xinping, Qu, Dengxing, Wang, Gongzhong, Zhang, Jianhua   +4 more
core   +1 more source

Study on bump-prone property of coal under multi-stage confining pressure variable stress lower limit cyclic loading and unloading

Meikuang Anquan, 2023
The study of coal bump-prone property under confining pressure plays a key role in exploring the formation mechanism of coal burst in deep underground mines.
Chuanjiu ZHANG, Taotao DU, Jianhui REN, Xuanliang LI   +3 more
doaj   +1 more source

Ductilityof fiber-reinforcedself-consolidatingconcreteundermulti-axial compression

, 2011
The results of 12 multi-axial compression tests performed on cylinders made of self-consolidating concrete, plain (SCC) and reinforced with steel fibers (FR-SCC), are presented.
Chiaia, Bernardino, Fantilli, Alessandro Pasquale, Vallini, Paolo   +2 more
core   +1 more source

Cold quarks in medium: an equation of state

, 2009
We derive a compact, semi-algebraic expression for the cold quark matter equation of state (EoS) in a covariant model that exhibits coincident deconfinement and chiral symmetry restoring transitions in-medium.
Chang, Lei, Chen, Huan, Klahn, Thomas, Liu, Yu-Xin, Roberts, Craig D.   +4 more
core   +1 more source

Investigation on gas migration in saturated materials with low permeability [PDF]

, 2015
International audienceInvestigation of the hydro-mechanical effects on gas migration in saturated materials with low permeabilityis of great theoretical and practical significances in many engineering fields.
Chen, Bao, Chen, Yonggui, Cui, Yu-Jun, Xu, Long, Ye, Bin, Ye, Weimin   +5 more
core   +4 more sources

An Improved Damage–Plasticity Constitutive Model Capturing Rock Softening Behavior Under Various Confining Pressures

Applied Sciences
With the gradual depletion of shallow high-grade mineral resources, global mining activities are shifting toward deeper regions with more complex geological conditions.
Wei Huang, Juntao Ren, Peiyong Wang, Bingxiang Yuan, Junxuan Long, Haiqing Zhou, Rui Chen, Hao Li   +7 more
doaj   +1 more source

Failure characteristics of Beishan granite under unloading confining pressures

Yantu gongcheng xuebao, 2019
To better understand the effects of unloading confining pressure on failure mechanism, several trial tests on loading axial stresses and unloading confining pressures with different unloading rates are performed, and acoustic emission events are recorded
WANG Chao-sheng 1, ZHOU Hong-wei 1, WANG Rui 1, WANG Zi-hui 1, HE Shu-sheng 1, LIU Jian-feng 2
doaj   +1 more source

Yielding and hardening of flexible fiber packings during triaxial compression

, 2019
This paper examines the mechanical response of flexible fiber packings subject to triaxial compression. Short fibers yield in a manner similar to typical granular materials in which the deviatoric stress remains nearly constant with increasing strain ...
Curtis, Jennifer, Guo, Yu, Jin, Hanhui, Li, Yanjie, Liu, Qingzhao, Wassgren, Carl, Xu, Dandan   +6 more
core   +1 more source