Zobrazeno 1 - 10
of 1 527
pro vyhledávání: '"coal rock"'
Publikováno v:
Meikuang Anquan, Vol 55, Iss 12, Pp 39-47 (2024)
In order to study the creep disturbance characteristics of coal-rock combination body with different coal body heights, the uniaxial compression creep disturbance test of coal-rock combination body was carried out by using the rock rheological distur
Externí odkaz:
https://doaj.org/article/4e1b0c403a094603a0a410c8a67e0e11
Autor:
Pei ZHANG
Publikováno v:
Meikuang Anquan, Vol 55, Iss 12, Pp 161-170 (2024)
In order to characterize the deformation and failure law of coal rock, this paper carries out uniaxial compression tests of coal rock specimens, and obtains grey scale images of surface strain field by using digital speckle observation system. Based
Externí odkaz:
https://doaj.org/article/d5219bce09024b189121e412eeaad994
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 11, Pp 296-308 (2024)
Given the one-dimensional dynamic joint angle and axial static load difference of the coal rock structural plane under the bearing damage of the stress wave transmittance problem, the mechanism of interface inclination and axial static load on the tr
Externí odkaz:
https://doaj.org/article/5d494139f304425b91cf1dc8acaaed72
Autor:
Chuanwei ZHANG, Zhengwei HE, Zhengxiong LU, Linyue LI, Lingxiao GONG, Gangqiang ZHANG, Qiaona PAN
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 11, Pp 103-116 (2024)
Coal rock recognition is one of the core technologies to realize intelligent mining in the integrated mining face of extremely thin coal seam. Aiming at the special situation that the coal-rock boundary is naturally exposed during the mining of extre
Externí odkaz:
https://doaj.org/article/fb0c599493f548658d71acbccbc23388
Publikováno v:
Meikuang Anquan, Vol 55, Iss 11, Pp 69-76 (2024)
In order to study the horizontal well multi-segment multi-cluster fracture extension in the deep coal reservoir where the cleat fissures are developed, a multi-segment multi-cluster fracture extension model is created based on the extended finite ele
Externí odkaz:
https://doaj.org/article/2d569574dbcb4877a819add87b57a9c0
Study on microcrack propagation and evolution of fractured coal-rock based on mineral particle model
Publikováno v:
Meikuang Anquan, Vol 55, Iss 11, Pp 154-165 (2024)
In order to explore the influence of heterogeneity on the deformation localization and the failure mechanism of fractured coal-rock, the characteristics of stress and displacement vector fields of fractured coal-rock during the deformation and fractu
Externí odkaz:
https://doaj.org/article/dbfb77ade111436f95a55e9298a91140
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 9, Pp 144-152 (2024)
Electromagnetic radiation (EMR) has proven to be an effective monitoring technology for coal rock dynamic disasters, including underground rock burst and coal and gas outbursts. However, the intricate generation mechanisms of electromagnetic signal,
Externí odkaz:
https://doaj.org/article/8681e2f894634645b1a26c0e442df1e9
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract With the increase in mining depth and intensity, dynamic disasters such as rockburst in mines are becoming more severe. Deep resource extraction is characterized by a high in-situ stress geological environment, closely associated with geolog
Externí odkaz:
https://doaj.org/article/94fd61027c664b498b71e4c6fa353e11
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract The instability and failure processes of coal-rock combinations are accompanied by the release of acoustic emission (AE) and infrared radiation (IR) signals. To investigate the characteristics of AE and IR signals during the failure process
Externí odkaz:
https://doaj.org/article/5212f768c1d045d088bbd0d14aca3fcb