Results 11 to 20 of about 23,904 (309)

Numerical Analysis of Cyclic Impact Damage Evolution of Rock Materials under Confining Pressure

Applied Sciences, 2023
To study the effect of cyclic impacts and confining pressure on the damage evolution of rock materials, numerical simulations of cyclic impact tests on rock materials under confining pressure were carried out by LS-DYNA using dynamic relaxation and full ...
Pu Yuan, Qinghe Zhang, Aobo Li
doaj   +2 more sources

Static and dynamic mechanical responses of organic shales under combined temperature and confining pressure conditions [PDF]

Frontiers in Earth Science
IntroductionRocks are subjected to pressure and temperature underground. In situ mechanical properties of organic shales are of principal importance in unconventional reservoir exploration and production, CO2 sequestration, and geothermal energy ...
Laidong Hu, Xuguang Dong, Xiaoyang Wang, Yang Wang, Yang Wang   +4 more
doaj   +2 more sources

Experimental Study of Confining Pressure-Induced Fracture Network for Shale Gas Reservoir Under Triaxial Compression Conditions

Fractal and Fractional
The experimental study of shale fracture development is very important. As a channel of permeability, a fracture has a great influence on the development of shale gas.
Jinxuan Han, Ming Gao, Yubo Wu, Ali Raza, Pei He, Jianhui Li, Yanjun Lu, Manping Yang, Hongjian Zhu   +8 more
doaj   +2 more sources

Influence of Confining Pressure on Nonlinear Failure Characteristics of Coal Subjected to Triaxial Compression. [PDF]

Int J Environ Res Public Health, 2022
The stress of a coal seam increases with an increase in the mining depth, which makes the failure mechanism of a coal mass more complex. To reveal the deformation and failure law of deep coal, a series of triaxial experiments was carried out via ...
Li Q, Liu J, Lu S, Wang Z, Wang H, Wu Y, Wang Y, Ying D, Li M.   +8 more
europepmc   +2 more sources

Experimental study on energy dissipation and failure characteristics of rock at depth under non-hydrostatic pressure condition

Meitan kexue jishu, 2023
Deep buried rock is often in a non-hydrostatic initial ground stress field, and the different stress states lead to different rock response under dynamic loading.
Shizheng FANG, Renshu YANG, Weiyu LI, Yongliang LI, Jun CHEN   +4 more
doaj   +1 more source

Experimental study on permeability characteristics of gas-containing raw coal under different stress conditions [PDF]

Royal Society Open Science, 2018
The present experimental study on permeability characteristics for raw coal under different stress states is implemented by applying the triaxial self-made ‘THM coupled with servo-controlled seepage apparatus for gas-containing coal’; the result ...
Dongming Zhang, Yushun Yang, Hao Wang, Xin Bai, Chen Ye, Shujian Li   +5 more
doaj   +1 more source

The Pressure induced by salt crystallization in confinement [PDF]

Scientific Reports, 2016
AbstractSalt crystallization is a major cause of weathering of rocks, artworks and monuments. Damage can only occur if crystals continue to grow in confinement, i.e. within the pore space of these materials, thus generating mechanical stress. We report the direct measurement, at the microscale, of the force exerted by growing alkali halide salt ...
Desarnaud, J., Bonn, D., Shahidzadeh, N.
openaire   +4 more sources

Experimental Study on Seepage Characteristics of Fractured Rock Mass under Different Stress Conditions

Geofluids, 2021
In order to obtain the mechanical behavior and permeability characteristics of coal under the coupling action of stress and seepage, permeability tests under different confining pressures in the process of deformation and destruction of briquette coal ...
Ma Haifeng, Yao Fanfan, Niu Xin’gang, Guo Jia, Li Yingming, Yin Zhiqiang, Li Chuanming   +6 more
doaj   +1 more source

FRP lateral confining pressure and confining mechanism.

, 2022
FRP lateral confining pressure and confining mechanism.
Shaker Qaidi (13040076), Ahmed S. Mohammed (13040085), Ian Bennetts (13040100), Yaman S. S. Al-Kamaki (13040079), Hemn Unis Ahmed (10968683), Haytham F. Isleem (13040097), Osama Zaid (13040088), Fadi Althoey (13040091), Riadh Al-Mahaidi (13040082), Jawad Ahmad (13040094)   +9 more
core   +1 more source

Effects of Confining Pressure on Permeability in a Single Fracture Based on the Deformation of Hydraulic Aperture at Low Fluid Velocities

, 2022
The fluid flow in fractured rock was determined by the aperture of fractures, which is influenced by the complex variation and wide distribution of in situ stress conditions.
Jiazhong Qian, Haichun Ma, Peichao Feng, Xiaohui Tan, Jingping Wang, Qiankun Luo   +5 more
core   +1 more source