Zobrazeno 1 - 10
of 383
pro vyhledávání: '"Ru Hu"'
Publikováno v:
Energy Exploration & Exploitation, Vol 41 (2023)
The coal roof of the lower seam of a bifurcated coal seam is always broken and is caused by the mining of the upper seam, which results in difficult support for the coal roof. This seriously affects the safe and efficient mining of the lower seam. Pr
Externí odkaz:
https://doaj.org/article/813a554e37244a229ca0b8b4bca7469e
Publikováno v:
Geofluids, Vol 2023 (2023)
This study is focused on the problem that with the increase of coal seam mining depth, it is difficult to continuously replace mining due to complex roadway layout and unreasonable stope layout. By taking the mining geological conditions of the 62210
Externí odkaz:
https://doaj.org/article/6dfb254a6da34e86898a1e77c42d78d5
Publikováno v:
Geofluids, Vol 2022 (2022)
During downward mining of a bifurcated coal seam, the roof of the lower coal seam is relatively broken and difficult to control due to the mining influence of the upper coal seam. Roof accidents occur frequently during mining of the lower coal seam,
Externí odkaz:
https://doaj.org/article/9ba56d3dd1664bab98788ffaa7f8ba08
Publikováno v:
Geofluids, Vol 2021 (2021)
In recent years, bed separation water inrush, as a new type of water disaster, has posed serious threat to mining safety in China’s many coal mines. This study focused on periodic water inrush accidents in the No. 7335 working face owned by Xuzhuan
Externí odkaz:
https://doaj.org/article/d4ac354b2e7d4097b9f5c9213a6152e7
Publikováno v:
Advances in Materials Science and Engineering, Vol 2021 (2021)
In recent years, the structural evolution characteristics of the regenerated roof of the lower coal seam have become a research hotspot when the bifurcation coal seam is mined downward. In this paper, taking the bifurcation coal seam of Xutuan Coal M
Externí odkaz:
https://doaj.org/article/328c395e055944acb4a4645d7db8c103
Autor:
Xin-Ru Hu, Guang-Zhi Liao, Jun-Wen Wang, Yu-Yang Ye, Xue-Feng Chen, Lin Bai, Fan-Fan Shi, Kai Liu, Yong Peng
Publikováno v:
Journal of the American Heart Association; 7/16/2024, Vol. 13 Issue 14, p1-18, 18p
Publikováno v:
Journal of Geriatric Cardiology; May2024, Vol. 21 Issue 5, p534-541, 8p
Publikováno v:
In Journal of Transport Geography January 2019 74:62-76
Publikováno v:
Energy Exploration & Exploitation. 41:802-820
The coal roof of the lower seam of a bifurcated coal seam is always broken and is caused by the mining of the upper seam, which results in difficult support for the coal roof. This seriously affects the safe and efficient mining of the lower seam. Pr
Publikováno v:
Digestive Diseases. 41:217-226
Background and Objectives: Microscopic colitis (MC) is a chronic inflammatory bowel disease characterized by watery diarrhoea and a normal radiological and endoscopic appearance. Concern regarding a potential association between drug exposure and MC