Zobrazeno 1 - 10
of 6 168
pro vyhledávání: '"coal seam"'
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-17 (2024)
Abstract High-intensity coal mining has induced a series of ecological and environmental problems issues, including surface subsidence, the development of ground cracks, and the deterioration of vegetation. The disruption of water circulation systems
Externí odkaz:
https://doaj.org/article/06284c609d4440d393e469bea6282b2b
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Abstract Coal seam mining causes fracture and movement of overlying strata in goaf, and endangers the safety of surface structures and underground pipelines. Based on the engineering geological conditions of 22,122 working face in Cuncaota No.2 Coal
Externí odkaz:
https://doaj.org/article/66281796858b420496304543645ac7f2
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-17 (2024)
Abstract The hydrogeological conditions of the Qianbei coalfield are complex, and karst water in the roof rock frequently disrupts mining operations, leading to frequent water inrush incidents. Taking the representative Longfeng Coal Mine as a case s
Externí odkaz:
https://doaj.org/article/9a1186850e0a420297fe67328f1cf58b
Publikováno v:
Meitan xuebao, Vol 49, Iss 8, Pp 3580-3592 (2024)
The evaluation and matching of CCUS source and sink potential of various geological bodies in Huainan coalfield is of great significance to the engineering popularization of CO2–ECBM technology. In this study, various types of geological bodies, su
Externí odkaz:
https://doaj.org/article/165cdf80332542c6b731ab44bd4c3f23
Autor:
Jie ZHANG, Jianping SUN, Yifeng HE, Yiming ZHANG, Haibo PANG, Haohao WU, Jianchen ZHANG, Bing PENG
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 8, Pp 11-22 (2024)
In order to explore the influence of the remaining coal pillar in the upper coal seam on the stress of the floor and the reasonable layout of the mining roadway in the lower coal seam, taking Tangshangou Coal Mine as the research object, the theoreti
Externí odkaz:
https://doaj.org/article/978c3f1e9e1e4ccba650140571e558d3
Autor:
Zhiming YAN, Xinsheng ZHANG, Junsheng ZHANG, Baige YANG, Yunxing CAO, Shumin LI, Runping DONG
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 8, Pp 63-73 (2024)
Coal mine disasters caused by coal and gas outbursts are severe in China. Currently, static and dynamic technologies are mainly used to address the difficult gas control problem. The gas control mechanism of the composite technology of cavity making
Externí odkaz:
https://doaj.org/article/e25db2ca03214e2591530ad8e4b5ecfd
Process optimization and application of bolter miner for 'three-soft' thick coal seam mining roadway
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 8, Pp 1-10 (2024)
The overall strength of the surrounding rock of “three-soft” thick coal seam mining roadway is low, and the combination of rock structure generally changes greatly, resulting in obvious differences in the stability of hanging roof of driving face
Externí odkaz:
https://doaj.org/article/bf20c7c3048e4a3781b61cc0fb9a34bd
Publikováno v:
矿业科学学报, Vol 9, Iss 4, Pp 519-528 (2024)
This study investigates the fracture evolution patterns of overlying strata under the mining conditions of close-distance coal seams.Taking the 9305 working face of Anshun Coal Mine as the research object, this study probed into the evolution of disp
Externí odkaz:
https://doaj.org/article/a5d365d7e93c48af97fdae2d1038f4fe
Publikováno v:
Meitan xuebao, Vol 49, Iss 7, Pp 3167-3177 (2024)
There are various forms of multilateral horizontal wells for developing coalbed methane, and the role of cleats in the development process is unclear. It is necessary to investigate the impact of the discrete cleat distribution in coal seams and the
Externí odkaz:
https://doaj.org/article/1a81943c0b3d4ff0ac2ddd8d2f9bc5ae
Autor:
Baoze GU
Publikováno v:
Meikuang Anquan, Vol 55, Iss 7, Pp 15-21 (2024)
For the problems that poor gas permeability and strong gas adsorption in the coal seams of Wuhushan Coal Mine leads to poor drilling and extraction efficiency and low extraction rate, physical simulation and on-site testing methods were used to numer
Externí odkaz:
https://doaj.org/article/4920fcb565374e3f8cd49f3d9386d2a4