Zobrazeno 1 - 10
of 8 870
pro vyhledávání: '"roadway"'
Autor:
Gong, Libin
Publikováno v:
Meitan xuebao, Vol 49, Iss 9, Pp 3759-3780 (2024)
Rock burst disaster has become a major safety problem in underground coal mining worldwide. Using the true triaxial electro-hydraulic servo loading test system, the stress-strain law, failure characteristics and acoustic emission activity law of coal
Externí odkaz:
https://doaj.org/article/b6fecd291a5f4de78adef7c3260207db
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 61-68 (2024)
When the mining relationship between the upper coal seam working face and the lower coal seam roadway in the close distance coal seam changes, the deformation and instability mechanism of the surrounding rock of the roadway will be more complicated.
Externí odkaz:
https://doaj.org/article/aa9a8ebb1ea44eb4bc61cb21e77f37d6
Autor:
Shuangming WANG, Lang LIU, Mengbo ZHU, Baoning WEI, Dengdeng ZHUANG, Huisheng QU, Wei HE, Chengcheng SHAO, Lei XIA, Jing ZHOU
Publikováno v:
Meitan xuebao, Vol 49, Iss 8, Pp 3291-3315 (2024)
The situation of coal as the stabilizer guarantee the energy safety in China cannot be changed in the short term, and it will continue to face the problems of coal resource protection and the low utilization rate of coal-based solid waste. Through in
Externí odkaz:
https://doaj.org/article/89971838d0ff42c090deb34e8c108a2f
Autor:
Abbas Sheykhfard, Farshidreza Haghighi, Soheila Saeidi, Mohammad SafariTaherkhani, Subasish Das
Publikováno v:
IATSS Research, Vol 48, Iss 3, Pp 427-439 (2024)
This study examined the influential roadway and contextual factors affecting drivers' speed selection through a comprehensive investigation employing structural equation modeling. Roadway and contextual variables including road curvature, presence of
Externí odkaz:
https://doaj.org/article/2728cd741b20443389bc6a75648f07e6
Publikováno v:
Meikuang Anquan, Vol 55, Iss 10, Pp 129-138 (2024)
For the problem that the potential risk of coal mine roadway is difficult to be quantified and predicted, the risk factors affecting the stability of roadway are screened and extracted. The fuzzy analytic hierarchy process (FAHP) risk evaluation mode
Externí odkaz:
https://doaj.org/article/466243b7dca846709cb939c1b106e90d
Publikováno v:
Meikuang Anquan, Vol 55, Iss 10, Pp 100-110 (2024)
In order to reduce the risk of coal mine production, timely predict and control the risk of roadway roof fall, twelve evaluation indexes such as the thickness of stable rock strata, geological conditions and cross-section shape of roadway were select
Externí odkaz:
https://doaj.org/article/dcbd4df60838490a9a54894423a0d13a
Autor:
Zhen’an LI, Zhuang LI
Publikováno v:
Meikuang Anquan, Vol 55, Iss 10, Pp 158-165 (2024)
In order to understand the mechanical response and failure characteristics of anchored fractured coal body under cyclic dynamic load, the dynamic load impact test of anchored fractured coal under cyclic impact dynamic load was carried out by using th
Externí odkaz:
https://doaj.org/article/c1bfb4da16c749fb8f6f2a5c2efef350