Zobrazeno 1 - 10
of 299
pro vyhledávání: '"surrounding rock stability"'
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
The stability of the surrounding rock is an important engineering challenge for soft rock tunnels. Based on the FLAC3D finite difference numerical simulation software, this paper analyzes the typical area of the Fenghuang Mountain tunnel in the Chuxi
Externí odkaz:
https://doaj.org/article/16551d482a62484488b5d48b3ff0a710
Publikováno v:
Meikuang Anquan, Vol 55, Iss 6, Pp 134-140 (2024)
Taking 4502 working face of Shaqu No.1 Coal Mine as an example, the influence of roof cutting parameters on the stability of surrounding rock is studied by means of theoretical analysis, numerical simulation and field measurement. The results show th
Externí odkaz:
https://doaj.org/article/40ecae8950e4496682fea62567b07129
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 6, Pp 2553-2567 (2024)
Abstract The roadway surrounding rock stability under the influence of interchange remaining coal pillar in close distance coal seams is one of the key factors affecting the coal mines safe and efficient mining. To reduce the roadway deformation, the
Externí odkaz:
https://doaj.org/article/f33f07f99c464167982f7eb09b824101
Publikováno v:
Meikuang Anquan, Vol 55, Iss 5, Pp 213-221 (2024)
One-time full-thickness mining with ultra-high mining height has the characteristics of high mining efficiency and high resource recovery rate. In order to explore the further breakthrough of ultra-high mining height fully mechanized mining technolog
Externí odkaz:
https://doaj.org/article/64e202abf1c74049bcb8b61be0f02aca
Publikováno v:
Meitan xuebao, Vol 49, Iss 3, Pp 1332-1344 (2024)
Coal pillars in soft and thick coal seam are often tall and have large exposed coal walls, and the coal quality is soft with some developed cracks, which can easily cause an instability of coal pillars and make roadway maintenance difficult. This pap
Externí odkaz:
https://doaj.org/article/0d8805ad090440799ed635f71b5971cf
Publikováno v:
Applied Sciences, Vol 14, Iss 22, p 10598 (2024)
The roadway project of broken rock mass in the Shilu Iron Deposit was taken as the research object to discuss the stability control of the surrounding rocks using support patterns with broken rock mass. The grade evaluation of rock mass quality was c
Externí odkaz:
https://doaj.org/article/c99b31c3cece4c569032b9cc60d9a5ed
Publikováno v:
Applied Sciences, Vol 14, Iss 18, p 8485 (2024)
This study aims to alleviate the serious deformation of surrounding rock (SR) in an extremely soft and fragile fully mechanized caving face roadway (ESFFMCFR, the 8# coal seam, Huaibei mining area) under a conventional support. Laboratory tests of ro
Externí odkaz:
https://doaj.org/article/4247e871d1ba4e38a819f1c2d6254c0b
Autor:
Buchu Zhang, Shichuan Zhang, Baotang Shen, Yangyang Li, Shilong Song, Xuexian Han, Jinming Dang
Publikováno v:
Applied Sciences, Vol 14, Iss 17, p 7760 (2024)
In the western mining region, weakly cemented rock layers above the coal seams often lead to frequent catastrophic accidents during mining due to their instability. To address this, this paper analyzes the movement characteristics of surrounding rock
Externí odkaz:
https://doaj.org/article/404c0f213ccd44638d3bf2ae509edc03
Publikováno v:
In Fuel 1 April 2025 385
Publikováno v:
矿业科学学报, Vol 8, Iss 2, Pp 156-165 (2023)
The classification of surrounding rock stability of coal roadway has important theoretical and practical significance for the design, construction and management of on-site rock mass engineering.This paper selected seven key indexes that affect the s
Externí odkaz:
https://doaj.org/article/dfbffb3c1b044a9499056a47b8745593