Zobrazeno 1 - 10
of 152
pro vyhledávání: '"gob side entry driving"'
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 9, Pp 88-102 (2024)
Roof with weak interlayer has significant influence on the stability of deep gob-side entry driving, to effectively control the separation of roof with weak interlayer in deep gob-side entry driving under high deviatoric stress, based on the mechanic
Externí odkaz:
https://doaj.org/article/129484505c6c42de9cde93060109f9ec
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 5, Pp 1913-1933 (2024)
Abstract To improve the extraction of coal resources, gob‐side entry driving is gradually being promoted and applied. However, as the thickness of the coal seam increases, the deformation control of the roadway becomes more difficult. Aiming at thi
Externí odkaz:
https://doaj.org/article/34813673da124cb28ff72079128003d3
Autor:
Runzhi LI
Publikováno v:
Meikuang Anquan, Vol 55, Iss 3, Pp 199-208 (2024)
During the mining process of deep coal mining faces, they are often affected by strong mining dynamic pressure, resulting in strong mining pressure and significant deformation and damage of the surrounding rock of the roadway. Especially for isolated
Externí odkaz:
https://doaj.org/article/5e9495c72d1d423cbaeb7b42aab749c7
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 3, Pp 13-23 (2024)
In order to study the stability of small coal pillar roadway protection and its characteristics of blocking disasters in adjacent goaf areas at the same layer, the mining of extra-thick coal seams with hard roofs in the Carboniferous mining area in D
Externí odkaz:
https://doaj.org/article/ce7c7125a82145c281e09f838948554a
Autor:
Lei Xu, Yuzhao Ma, Davide Elmo, Shuxue Ding, Hengzhong Zhu, Honglin Liu, Wenfeng Li, Wen Chen
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-23 (2024)
Abstract Taking the return-airway 4204 with roof cutting in Longquan Coal Mine as the engineering background, roof structure, key parameters, and deviatoric stress evolution were studied. Conclusion: The Key Stratum within a 4–8 times mining height
Externí odkaz:
https://doaj.org/article/0e8c662dc4d645d8ab71fe6ae0d0e2f8
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 11, Pp 41-50 (2023)
Aiming at the problems of controlling the large deformation and failure of surrounding rock of deep soft-broken coal roadway, the gob-side entry driving with narrow coal pillar in the working face mined on both sides of the deep soft-broken coal seam
Externí odkaz:
https://doaj.org/article/128a6da823154f40a71d47dfb0f309d1
Publikováno v:
Meikuang Anquan, Vol 54, Iss 4, Pp 132-139 (2023)
In order to solve the problem of determining the width of coal pillar and surrounding rock control in gob-side entry driving with soft and broken composite roof, in view of the deformation and damage characteristics of soft and broken composite roof
Externí odkaz:
https://doaj.org/article/dd25e151f0db48728ed264fe31bd94b4
Akademický článek
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Publikováno v:
Meikuang Anquan, Vol 53, Iss 9, Pp 65-70 (2022)
Deep mining in Shaanxi and Inner Mongolia mining areas is characterized by high mine pressure and high degree of broken coal. Leaving narrow coal pillars is easy to cause side air leakage along goaf, and the coal left in the adjacent gob will undergo
Externí odkaz:
https://doaj.org/article/4cd15f3865724752a719ceec1ee886c8
Autor:
MA Wenwei
Publikováno v:
Meikuang Anquan, Vol 53, Iss 8, Pp 94-103 (2022)
When there is a thick hard rock layer in the overlying strata of the roof of the deep coal mining face, the hard rock layer is not easy to collapse. In the process of rotary subsidence, the supporting stress in the coal mining face and coal pillar wi
Externí odkaz:
https://doaj.org/article/a3a697a006b9422a9d06c6275e2b9ed5