Zobrazeno 1 - 10
of 91
pro vyhledávání: '"MINING PRESSURE"'
Publikováno v:
Applied Sciences, Vol 14, Iss 5, p 1948 (2024)
The long overhanging distance of hard roofs and long-collapse steps induces a large area of suspension on the working face in underground coal mines, resulting in excessive pressure and deformation on the surrounding rocks of the adjacent roadway in
Externí odkaz:
https://doaj.org/article/149618f0e1de447db836cdb896a41849
Akademický článek
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Akademický článek
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Publikováno v:
Energies, Vol 16, Iss 16, p 6065 (2023)
Under the guidance of green mining and scientific mining ideas, strata movement and its control have achieved a series of research developments in China. Based on the summary of research achievements related to strata movement characteristics, the in
Externí odkaz:
https://doaj.org/article/56d928b2e8654eceafdd54d640620390
Autor:
Mingzhong Gao, Jing Xie, Yanan Gao, Wenyong Wang, Cong Li, Bengao Yang, Junjun Liu, Heping Xie
Publikováno v:
International Journal of Mining Science and Technology, Vol 31, Iss 5, Pp 825-841 (2021)
During deep mining, the excavation disturbance stress path is the domination factor for the stability of the surrounding rock mass as well as the ground pressure. One of the important parameters of the stress path is the loading or unloading rate of
Externí odkaz:
https://doaj.org/article/0a5abda2b5564ef8936c6e93ec52d92d
Autor:
HOU Junhua
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 8, Pp 56-61, 121 (2022)
In order to explore the deformation and failure depth of the floor under the condition of fully mechanized top coal caving of extra-thick coal seam, this paper takes 1305 working face of Dongtan Coal Mine of Yankuang Energy Group Co., Ltd. as the bac
Externí odkaz:
https://doaj.org/article/2c6a193b3cbc4750a680d383247f39a3
Publikováno v:
Energies, Vol 16, Iss 9, p 3914 (2023)
Strong mining pressure disasters are prone to happen when the mining working face is under residual pillars (MWFRPs). The purpose of this study was to experimentally investigate and evaluate pressure manifestations and hydraulic fracture roof-cutting
Externí odkaz:
https://doaj.org/article/29f3f37b00704ea7846a7b26361abdb6
Publikováno v:
Open Geosciences, Vol 12, Iss 1, Pp 703-717 (2020)
This article analyzes the technical difficulties in full-section backfill mining and briefly introduces the technical principle and advantages of backfilling combined with caving fully mechanized mining (BCCFM). To reveal the strata behavior law of t
Externí odkaz:
https://doaj.org/article/147d8a71b610482781afd99117413339
Autor:
JIA Mingqu
Publikováno v:
Gong-kuang zidonghua, Vol 46, Iss 8, Pp 117-122 (2020)
Directional high-level borehole in roof is an important means to control mining pressure-release gas in coal mine underground. Due to limitation of drilling device, the borehole diameter is small in once-through drilling, and borehole group arrangeme
Externí odkaz:
https://doaj.org/article/93bf2c7b27ad4a3992bb11edd0d1b0cd
Publikováno v:
Energy Science & Engineering, Vol 8, Iss 3, Pp 898-909 (2020)
Abstract The core of backfilling mining is to reduce the mining pressure in order to achieve precise control of strata position and status. Since disturbances and damages to the original rocks of the stope by set‐up room and backfilling working fac
Externí odkaz:
https://doaj.org/article/0d61bf60dc5a4ac38a166b042fea4468