Results 11 to 20 of about 132,626 (258)

Permeability evolution during progressive development of deformation bands in porous sandstones [PDF]

, 2003
[1] Triaxial deformation experiments were carried out on large (0.1 m) diameter cores of a porous sandstone in order to investigate the evolution of bulk sample permeability as a function of axial strain and effective confining pressure.
Antonellini, Antonellini, Aydin, Aydin, B. T. Ngwenya, Beach, Bruno, Caine, Crawford, Evans, Fowles, Gibson, Grueschow, Hippler, I. G. Main, Jamison, Knipe, Knipe, Knott, Main, Main, Main, Mair, Mair, Manzocchi, Menendez, Moore, Ngwenya, Ngwenya, Ngwenya, O. Kwon, Ogilvie, Popp, Ramsay, Rhett, Rojstaczer, Rudnicki, S. C. Elphick, Scholz, Scott, Shipton, Sibson, Sverdrup, Taylor, Tuefel, Underhill, Wong, Zang, Zhang, Zhu, Zhu, Zoback   +51 more
core   +3 more sources

Experimental Study on Mechanical Properties and Seepage Laws of Raw Coal under Variable Loading and Unloading Rates

Geofluids, 2021
This manuscript studied the effects of variable axial pressure loading rate and variable confining pressure unloading rate on the deformation behavior and seepage characteristics of raw coal under alternate loading and unloading of axial pressure and ...
Kangwu Feng, Kequan Wang, Dongming Zhang, Yushun Yang   +3 more
doaj   +1 more source

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   +1 more source

MRI investigation of granular interface rheology using a new cylinder shear apparatus [PDF]

, 2009
The rheology of granular materials near an interface is investigated through proton magnetic resonance imaging. A new cylinder shear apparatus has been inserted in the MRI device, which allows the control of the radial confining pressure exerted by the ...
Alain Corfdir, Artoni, Bocquet, Bonn, Caprihan, Caprihan, Chambon, Chambon, Cheng, Chevoir, Chevoir, Corfdir, Coste, da Cruz, Daniel, DeJong, Ehrichs, François Bertrand, François Chevoir, Fukushima, Fukushima, Georg Koval, Hanlon, Hill, Howell, Huang, Jarny, Jean-Noël Roux, Jop, Knight, Koval, Koval, Kuperman, Kuperman, Latzel, Laurent Tocquer, Lerat, Losert, Metcalfe, Miller, Mueth, Mueth, Møller, Nakagawa, Nedderman, Oumarou, Ovarlez, Ovarlez, Pascal Moucheront, Raynaud, Ristow, Rodts, Schlosser, Seymour, Stéphane Rodts, Tardos, Tardos, Tubacanon, Uesugi, Uesugi, Uesugi, Vardoulakis, Veje, Wang, Yamane, Yang, Yang   +66 more
core   +5 more sources

Study on the Influence of Bottom Hole Confining Pressure on High-Pressure Jetting Techniques

Shiyou jixie, 2021
As the development of oil and gas resources continues to deepen, the impact of bottom hole confining pressure on high-pressure water jetting has become more and more prominent. To compare the rock-breaking performance of high-pressure water jet under the
Li Jingbin, Huang Zhongwei, Wei Xiuli, Zhang Yiqun, Zhang Hongyuan, Huang Pengpeng   +5 more
doaj  

Sensitivity Analysis of Influence of Many Factors on Coal Permeability Under Non-isostatic Deviating Stress

Meikuang Anquan, 2020
In order to explore the sensitivity of axial pressure, confining pressure and gas pressure on permeability of coal under non-isostatic deviating stress, seepage tests of different axial pressures, confining pressures and gas pressures under non-isostatic
ZHANG Yaqi, PENG Wenqing
doaj   +1 more source

Influence of Confining Pressure on the Crack Growth Behavior in a Highly Filled Elastomer [PDF]

, 2006
In this study, the effect of confining pressure on the crack growth behavior in a highly filled elastomer was investigated. The material under investigation contains 86% by weight of hard particles embedded in a rubbery matrix.
Liu, C. T., Ravichandran, G.
core   +1 more source

Study on experiment conditions of marine shale gas seepage law

Journal of Natural Gas Geoscience, 2016
In order to discover the conditions suitable for testing shale gas seepage law, marine shale gas cores were taken from southern China. Samples were tested by using the differential pressure-flow rate method with actual gas under two modes (e.g.
Weiyao Zhu, Wei Tian, Ying Gao, Jia Deng, Xueling Zhang, Qian Qi, Qian Ma   +6 more
doaj   +1 more source

Experimental study on influence factors in damage-permeability characteristics of loading and unloading coal

矿业科学学报, 2021
In the process of deep coal seam mining, multiple factors affect the coal body damage-permeability characteristics.In order to reveal the evolution law of coal mining damage-permeability characteristics, the coal damage-permeability experiments under ...
Xu Chao, Qin Liangliang, Li Xiaomin, Yang Gang, Sun Haoshi   +4 more
doaj   +1 more source

Numerical study on compressive mechanical characteristics of filled jointed rock under confining pressure based on PFC

Frontiers in Ecology and Evolution, 2023
Confining pressure is an important factor affecting the strength and deformation characteristics of rock mass, it is of great significance to study the mechanical and deformation characteristics of jointed rock mass under confining pressure for the ...
Lang Song, Lang Song, Shaobo Chai, Jing Li, Boyang Song, Lianzeng Chai   +5 more
doaj   +1 more source