Results 1 to 10 of about 3,630,714 (312)

Grouting test and reinforcement mechanism analysis of rock with single penetrated fracture surface

Rock and Soil Mechanics, 2022
For the problem that how the grouting reinforcement of a single penetrated structural plane affects the bearing capacity of surrounding rock, an approach of rock samples preparation with single penetrated fracture surface is proposed firstly, and the ...
ZHU Yong-jian, REN Heng, WANG Ping, LI Peng, WANG Xi-zhi, WEI Ming-xing   +5 more
doaj   +1 more source

Study on failure characteristics and control of soft rock roadway floor

Meitan kexue jishu, 2023
In order to study the regularity of floor heave deformation and instability of soft rock roadway under different horizontal stress boundary conditions, the return air roadway of 50213 working face of Guantun Coal Mine was taken as the engineering ...
ZHANG Jie, GAO Shoushi, LI Tong, HUANG Xiaoping, YANG Tao, WANG Zhanghui, HE Yifeng, HAN Jinbo   +7 more
doaj   +1 more source

Energy evolution and failure characteristics of single fissure carbonaceous shale under drying−wetting cycles

Rock and Soil Mechanics, 2022
In order to investigate the energy evolution and failure characteristics of carbonaceous shale containing single fissure under drying−wetting cycles, the intact carbonaceous shale samples and the carbonaceous shale samples with fissure angles of 30°, 45°
LIU Xin-xi, LI Yu, FAN Zi-jian, LI Sheng-nan, WANG Wei-wei, DONG Peng   +5 more
doaj   +1 more source

Numerical Study on Strength and Failure Behavior of Rock with Composite Defects under Uniaxial Compression

Energies, 2021
The cracks and holes in underground engineering are the critical factors that cause the instability of the surrounding rock. It is helpful to control the stability of surrounding rock to study the samples with combined defects of cracks and holes.
Xiaofei Wang, Zhiguo Xia, Peng Li, Hongning Liu   +3 more
doaj   +1 more source

Experimental Investigation of the Thermal Runaway Propagation Characteristics and Thermal Failure Prediction Parameters of Six-Cell Lithium-Ion Battery Modules

Energies, 2023
Efforts to meet regulations ensuring the safety of lithium-ion battery (LIB) modules in electric vehicles are currently limited in their ability to provide sufficient safe escape times in the event of thermal runaway (TR). Thermal runaway occurs when the
Hongxu Li, Qing Gao, Yan Wang
doaj   +1 more source

Analysis of uniaxial compression of rock mass with parallel cracks based on experimental study and PFC2D numerical simulation [PDF]

Archives of Civil Engineering, 2022
In this study, the uniaxial compression test and the numerical simulation of the twodimensional particle flow code (PFC2D) were used to study the mechanical properties and failure laws of rock masses with parallel cracks.
Jie Yang, Haijun Chen, Xiong Liangxiao, Zhongyuan Xu, Tao Zhou, Changheng Yang   +5 more
doaj   +1 more source

Study on Filling Material Strength and Dam Failure Characteristics of Loess Dam

Applied Sciences, 2023
In the Loess Plateau region, loess, as a widely distributed building material, is often used as a filling material for dams. When the water level reaches a certain height, the body of a dam is prone to shear failure due to the penetration of water.
Nengyuan Chen, Qiang Li, Wei Wei, Danni Zhao, Xiong Wu, Jiangbo Xu, Yalin Nan, Ligang Niu   +7 more
doaj   +1 more source

Experimental Investigation of Failure Mechanisms of Granites with Prefabricated Cracks Induced by Cyclic-Impact Disturbances

Energies, 2022
Engineering rock mass is normally subject to cyclic–dynamic disturbances from excavation, blasting, drilling, and earthquakes. Natural fractures in rock masses can be reactivated and propagated under dynamic and static loadings, which affects the ...
Jie Zhang, Xun Xi, Wenhui Tan, Xu Wu, Xinghui Wu, Qifeng Guo, Meifeng Cai   +6 more
doaj   +1 more source

Failure characteristics of extra-thick coal seam under goaf based on double yield model

Meikuang Anquan, 2022
This paper aims to study the influence of the goaf in the upper coal seam on the overlying ultra-thick coal seam and determine the dislocation distance in the roadway layout of the lower coal seam. Based on finite difference method, this research, takig
XUE Jisheng, ZHAO Tielin, PAN Liming
doaj   +1 more source

Different characteristics of heart failure due to pump failure and bradyarrhythmia [PDF]

Journal of Echocardiography, 2014
Heart failure (HF) can be caused by left ventricular (LV) pump failure as well as by bradyarrhythmias. Hemodynamic differences between HF by LV pump failure and that by bradyarrhythmia have not been fully investigated. We hypothesized that HF by LV pump failure could be associated with both reduced cardiac output (CO) and increased LV filling pressure ...
Iwataki, Mai, Kim, Yun-Jeong, Sun, Byung-Joo, Jang, Jeong-Yoon, Takeuchi, Masaaki, Fukuda, Shota, Otani, Kyoko, Yoshitani, Hidetoshi, Ohe, Hisaharu, Kohno, Ritsuko, Oginosawa, Yasushi, Abe, Haruhiko, Levine, Robert A., Song, Jae-Kwan, Otsuji, Yutaka   +14 more
openaire   +2 more sources