Zobrazeno 1 - 10
of 135
pro vyhledávání: '"repeated mining"'
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 44-51 (2024)
The surrounding rock of the repeated mining roadway is severely deformed and cannot be reused, and the repeated mining roadway has obvious overlapping extension features during the service period. In order to solve the above problems, this study take
Externí odkaz:
https://doaj.org/article/d3a2febc40a14d4aa432d6c763befe9a
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
In particular, the secondary development of overlying strata fractures can easily lead to the upper goaf, resulting in gas and water gathered in the goaf entering the working face of the lower coal seam through the overlying strata fractures, threate
Externí odkaz:
https://doaj.org/article/7cd2c29c38a84a6587663224b0ce0af3
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
Mining in an upper coal seam results in the redistribution of vertical stress within a lower coal seam until a new equilibrium state is attained. Close-multiple coal seams mining faces the occurrence of multi-goafs and a complex stress environment. B
Externí odkaz:
https://doaj.org/article/b4306817ad284b32992e56629df99c9c
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 9, Iss 1, Pp 1-16 (2023)
Abstract Based on the mining conditions of shallow close coal seams in the Jurassic coalfield of northern Shaanxi, in order to explore the evolution and development height prediction of water-conducting fracture zone (WCFZ), combining with measured s
Externí odkaz:
https://doaj.org/article/397e32c067834bcaaac7ab2d1554e447
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 9, Pp 1-10 (2023)
The characteristics of surface subsidence under the condition of repeated mining in weakly cemented strata are of great significance to the safe and efficient mining and ecological restoration of coal resources in weakly cemented mining areas in west
Externí odkaz:
https://doaj.org/article/fd7377095e58467f92949c3f7b17732d
Publikováno v:
Meikuang Anquan, Vol 54, Iss 7, Pp 221-227 (2023)
Aiming at the fact that the water-conducting fissures in the overlying rock may cut through aquifers and induce water inrush disasters by repeated mining of shallow-buried and short-distance coal seams in Shennan Mining Area, this paper adopts the me
Externí odkaz:
https://doaj.org/article/3b4b7e49757342efb8e99166f686a8a7
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 6, Pp 1-10 (2023)
This study focused on the stability control of roof in long wall stratified mining of large dip angle thick coal seam. Taking Panbei Coal Mine in Huainan as an example, the effect mechanism of water content, compression ratio and grain size grading o
Externí odkaz:
https://doaj.org/article/04032d17284e4e858a3766563fed19b7
Autor:
LI Yong, WANG Zhuoying
Publikováno v:
Meikuang Anquan, Vol 53, Iss 12, Pp 226-234 (2022)
In view of the sudden change of mine pressure in 226 upper 02 fully mechanized caving face of Huangyuchuan Coal Mine, the mechanism and countermeasures of sudden change of mine pressure in fully mechanized caving face are studied by using the methods
Externí odkaz:
https://doaj.org/article/4716c7992a024f93a6f9376ff9af763e
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
ZHENG Lijun
Publikováno v:
Meikuang Anquan, Vol 53, Iss 3, Pp 112-119 (2022)
Overburden separation layer filling technology for ground surface subsidence control is an important part in the system of coal mine green mining. In this study, by considering the overburden structure and ground surface subsidence law, we propose a
Externí odkaz:
https://doaj.org/article/a65272b1808c4c5e89e0666f154fde4e