Results 21 to 30 of about 2,482,149 (255)

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

open access: yesGeofluids, 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   +6 more
doaj   +1 more source

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

open access: yesRoyal 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   +5 more
doaj   +1 more source

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

open access: yesMeitan 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   +4 more
doaj   +1 more source

FRP lateral confining pressure and confining mechanism.

open access: yes, 2022
FRP lateral confining pressure and confining mechanism.
Shaker Qaidi (13040076)   +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

open access: yes, 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   +5 more
core   +1 more source

Breakdown pressure curve of models with different confining pressure ratios.

open access: yes, 2023
Breakdown pressure curve of models with different confining pressure ratios.
Zhihui Han (13757395)   +1 more
core   +1 more source

A modified strain-softening model with multi-post-peak behaviours and its application in circular tunnel [PDF]

open access: yes, 2018
A large number of laboratory experiments have shown that the rocks in post-peak state present strain-softening behaviour under low confining pressure, and gradually evolved into elastic-perfectly plastic with the increasing of confining pressure. Neither
Xuezhen Wu   +5 more
core   +1 more source

Stress loading gradients under different confining pressure.

open access: yes, 2021
Stress loading gradients under different confining pressure.
Jianjun Zhang (220300)   +4 more
core   +1 more source

Experimental Study on the Influence of Jet Dynamic Pressure Based on a New Confining Pressure Control System

open access: yesShiyou jixie
To address challenges such as low operating efficiency and poor descaling effect in jet stimulation operation of deep/ultra-deep wells, the influence of downhole environmental pressure (confining pressure) on jet dynamic pressure has been studied at home
Zhou Shijie   +5 more
doaj   +3 more sources

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

open access: yesGeofluids, 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   +3 more
doaj   +1 more source

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