Zobrazeno 1 - 10
of 283
pro vyhledávání: '"extra‐thick coal seam"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-25 (2024)
Abstract Rock bursts in roadway groups of deep mining workfaces are more likely to occur due to concentrated static loads, posing significant threats to mining safety and efficiency. In this study, the coal mine roadway groups in western China are ta
Externí odkaz:
https://doaj.org/article/fde8164b5def4e418c54bc5eba82daec
Autor:
Yan-ping Xue
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-21 (2024)
Abstract This study introduces an innovative optimized bolting support system specifically tailored for gob-side entry excavation in thick coal seams at a coal mine in southwestern Shandong, China. Employing theoretical analysis, numerical simulation
Externí odkaz:
https://doaj.org/article/d5187b0a28cc41ee9e84d43dcc9099f8
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 9, Pp 48-67 (2024)
The research focused on addressing various challenges in intelligent top caving theory, intelligent perception and recognition key technology, intelligent caving comprehensive decision-making technology, and remote caving intelligent control technolo
Externí odkaz:
https://doaj.org/article/3ae56c5c93094fda9e600decba3cf08b
Autor:
Chao WU, Zhiqiang WANG, Yaoru LIU, Jingkai LI, Xinsheng GENG, Lu LIN, Tingzhao LI, Lei SHI, Peng WANG
Publikováno v:
Meitan xuebao, Vol 49, Iss 9, Pp 3728-3744 (2024)
Aiming at the problem of large deformation and instability control of narrow coal pillar in the vertical stratification section of extra-thick coal seam, the stability and control technology of the surrounding rock of narrow coal pillar in extra-thic
Externí odkaz:
https://doaj.org/article/a766ea3211b2496483757efe08fca552
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
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 4, Pp 83-92 (2024)
There is a great amount of coal pressed under buildings in our country, while the discharge of coal-based industrial solid wastes such as coal gangue and fly ash are increasing, which has severely restricted the local economic and social development.
Externí odkaz:
https://doaj.org/article/34838a6bb55a42f18ddeb4fcda17b2bc
Autor:
Qiaorong MENG, Huixian WANG, Pengfei WANG, Kehang CHEN, Jianli ZHANG, Enyuan DONG, Xiang GAO, Wei HOU
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 3, Pp 38-52 (2024)
The depth of coal mining in the central and eastern China is increasing, the ground pressure is high, the roadway deformation and burst risk is great. Gob-side entry with slender gate pillar (GESGP) is constantly adopted to improve surrounding rock e
Externí odkaz:
https://doaj.org/article/c1da80e7e6744a51888dd0a8dcf29cbe
Autor:
Xingping LAI, Chong JIA, Haidong XU, Feng CUI, Xudong LIU, Hao WANG, Changliang LU, Suilin ZHANG, Shifeng HE
Publikováno v:
Meitan xuebao, Vol 49, Iss 1, Pp 337-350 (2024)
With the gradual coal mining of deep rock burst mine, the impact accompanying roadway excavation becomes more and more intense. Aiming at the problem of effective prevention and control of rock burst in roadway excavation, taking the steep seam mine
Externí odkaz:
https://doaj.org/article/ea95cfc9eb1943799b6808810cc55ccf
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 14, Iss 1, Pp 1-23 (2023)
AbstractCoal seam mining causes movement and deformation of the overlying rock mass and ground surface, directly resulting in serious damage to the surface construction facilities. To investigate the deformation mechanism and characteristics of the o
Externí odkaz:
https://doaj.org/article/9c0f591d97f647b89a93da2dcd980871
Autor:
Dongdong Chen, Zhiqiang Wang, Shuaishuai Yue, Shengrong Xie, Fulian He, Chunyang Tian, Zaisheng Jiang, Dawei Liang, Bohao Qi
Publikováno v:
Applied Sciences, Vol 14, Iss 21, p 9694 (2024)
The section span of the withdrawal space of fully mechanized top coal caving in an extra-thick coal seam is large, and with the gradual withdrawal of the hydraulic support, a series of strong dynamic pressure disasters occur in the withdrawal space,
Externí odkaz:
https://doaj.org/article/763614ae9ca44a1da56244b5b4c4d0f1