Zobrazeno 1 - 10
of 38
pro vyhledávání: '"gas drainage borehole"'
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
After high gas mines coal mining reaches deep, the issue of rockburst has become increasingly prominent. Aiming at solving the problem of rock burst in high gas mines, the coupling mechanism of anti-rockburst and pressure relief in gas drainage boreh
Externí odkaz:
https://doaj.org/article/5f33ef26a38a4a6ba994988b579b615d
Publikováno v:
Meitan xuebao, Vol 48, Iss 8, Pp 3102-3115 (2023)
The instability and collapse of drainage boreholes is one of the key problems that hinder the efficient extraction of coal-bed methane (CBM). In order to solve the problem of instability and collapse of extraction boreholes in soft coal seams, based
Externí odkaz:
https://doaj.org/article/d151167b2b854931a75618d3f406b0e2
Publikováno v:
Meikuang Anquan, Vol 54, Iss 7, Pp 130-136 (2023)
In order to study the influence of drilling on the deformation and failure characteristics of coal, uniaxial compression tests were carried out for complete samples and briquette samples with drilled holes, and the strength characteristics, displacem
Externí odkaz:
https://doaj.org/article/fc02972b66f249f6a99340dc8b64120f
Publikováno v:
Meikuang Anquan, Vol 54, Iss 7, Pp 137-148 (2023)
Low-rank coal is very complex in composition and differs in the proximate analysis, which significantly affects the ignition. In order to further explore the ignition tendency of low rank coal, the thermal behavior of BRXL and YJL low rank coal is sy
Externí odkaz:
https://doaj.org/article/428e532e56e144d091ec785caf54e11b
Publikováno v:
Meikuang Anquan, Vol 53, Iss 1, Pp 121-127 (2022)
In order to realize the coal mine drilling hole sealing automation, according to the “13th Five-Year” key research and development project “gas control drilling and hole sealing robot” requirements, we put forward the integral multi-channel a
Externí odkaz:
https://doaj.org/article/9bb2a794b9ec432a89d753ee23493c37
Publikováno v:
International Journal of Mining Science and Technology, Vol 30, Iss 3, Pp 397-403 (2020)
Using self-researched gas drainage borehole stability dynamic monitoring device, three-dimensional deformation characteristics of borehole under steady vertical load were researched experimentally and systematically. This research indicated that unde
Externí odkaz:
https://doaj.org/article/4c6e3bba9d984ec5b264cae18065a5a8
Autor:
ZHANG Rui
Publikováno v:
Meikuang Anquan, Vol 51, Iss 3, Pp 107-110 (2020)
To meet the needs of gas extraction, water damage prevention and detection of hidden disaster factors in the long working face of coal mine area with long distance and high efficiency, the high-power directional drilling equipment ZDY15000LD with 1 5
Externí odkaz:
https://doaj.org/article/4e108296317744c3b53a6a369375b7e7
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Publikováno v:
Journal of Engineering Science and Technology Review, Vol 9, Iss 1, Pp 102-110 (2016)
o determine the reasonable spacing of holes for gas drainage, an experimental study was conducted on the effective influence radius of drilling hole through the pressure drop method based on the actual condition of coal seams. The coal seam that co
Externí odkaz:
https://doaj.org/article/f7a1de325a2d444097ab888af623150e
Akademický článek
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