Zobrazeno 1 - 10
of 192
pro vyhledávání: '"thin coal seam"'
Autor:
Chuanwei ZHANG, Zhengwei HE, Zhengxiong LU, Linyue LI, Lingxiao GONG, Gangqiang ZHANG, Qiaona PAN
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 11, Pp 103-116 (2024)
Coal rock recognition is one of the core technologies to realize intelligent mining in the integrated mining face of extremely thin coal seam. Aiming at the special situation that the coal-rock boundary is naturally exposed during the mining of extre
Externí odkaz:
https://doaj.org/article/fb0c599493f548658d71acbccbc23388
Autor:
Wei Cai, Linyang Li, Mengming Lin, Jingyong Wang, Ping Wang, Qingmiao Li, Zhiping Ye, Jie Zhang, Jianjun Zhao
Publikováno v:
Natural Hazards Research, Vol 4, Iss 2, Pp 255-264 (2024)
The problem of surface deformation caused by coal mining is acute and usually lasts for a long time. During coal mining, the movement of the overlying strata has a broad range of influences, which may cause surface deformation, surface cracking, and
Externí odkaz:
https://doaj.org/article/8d4fed64602042b6a303f52601e5cbe0
Publikováno v:
矿业科学学报, Vol 9, Iss 3, Pp 446-454 (2024)
This study aims to address existing problems of complex stress conditions and difficulties in retaining roadway so as to achieve long-term stability of roadway surrounding rock in gob-side entry in thin coal seam. Specifically, we investigated the 43
Externí odkaz:
https://doaj.org/article/e525fa465d3c4cb1aa2a889e1919c586
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract The low loading rate of the thin coal seam shearer drum is a severe obstacle to the efficient mining of thin seam resources, and the auxiliary drum loading through the cowl is an effective measure to alleviate this situation. However, the wo
Externí odkaz:
https://doaj.org/article/3e8908147fb54cf7929f7817fdca81f7
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-20 (2024)
Abstract The variation in the width of the mining face significantly affects the stability of the face, leading to potential roof fracturing and collapse. Additionally, strong mining pressure can manifest, severely impeding the safe production of coa
Externí odkaz:
https://doaj.org/article/04972f65251e44f4b0f31df34c6f0c8c
Publikováno v:
Meitan kexue jishu, Vol 51, Iss S2, Pp 60-70 (2023)
Multiple and thin coal seams develop in Guizhou province, and the thin coal seams below 1.5 m in the coal measures of Longtan Formation account for more than 50% of the total coal seams. As for the surface gas control technology of thin coal seam min
Externí odkaz:
https://doaj.org/article/76235331a69b4a7880d0c59a09ceb596
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 11, Pp 148-157 (2023)
Guizhou has a large amount of coal resources, which have been mined for a long period of time, resulting in the formation of a large area of goaf. There is a large amount of coalbed methane resources in the goaf, but the exploitation and utilization
Externí odkaz:
https://doaj.org/article/0bde62e4c4814ec98e1fb765b198d8dd
Publikováno v:
Meikuang Anquan, Vol 54, Iss 8, Pp 73-80 (2023)
The mining of thin coal seam resources is seriously affected by the overlying coal seam gas. The detection of three zones of goaf roof is of great significance to the safety production. In this paper, we carried out loading coal and rock resistivity
Externí odkaz:
https://doaj.org/article/1f4714928000464daaefa2e752eea268
Autor:
Ivan Sakhno, Svitlana Sakhno, Krzysztof Skrzypkowski, Oleksandr Isaienkov, Krzysztof Zagórski, Anna Zagórska
Publikováno v:
Applied Sciences, Vol 14, Iss 12, p 4992 (2024)
The severe floor heave in gob-side entry retaining is the major restriction factor of the wide application of pillarless mining thin coal seams. Reinforcement and stress-relief floor heave control methods are the most promising. However, in practice,
Externí odkaz:
https://doaj.org/article/0d22c212be6348e79694541a48e7a5fa
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