Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Fully mechanized top-coal caving mining"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract In the process of fully mechanized top-coal caving mining, the top-coal is affected by mining-induced stress, and the stress varies along the strike direction of working face, so the boundary position of its entering the limit equilibrium st
Externí odkaz:
https://doaj.org/article/d6777979fec84d41b5b6d0c5fc063685
Akademický článek
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Publikováno v:
Gong-kuang zidonghua, Vol 47, Iss 1, Pp 118-122 (2021)
At present, there are a variety of coal gangue identification technologies in automatic top coal mining. Gamma ray is too expensive and harmful to human body. Infrared technology is affected by ambient temperature. Radar detection has serious signal
Externí odkaz:
https://doaj.org/article/3023255bb738478bbbc8267403efd8ab
Publikováno v:
Gong-kuang zidonghua, Vol 46, Iss 9, Pp 44-50 (2020)
Current research on mine pressure law of working face mainly focus on mine pressure law and roof structure of large mining height working face with shallow burial depth, but there's few researches on behaviors law and control technology of strong min
Externí odkaz:
https://doaj.org/article/ce149d9a006d4dd7bda87a43829ba86f
Autor:
Tan Yi, Xu Han, Yan Weitao, Guo Wenbing, Bai Erhu, Qi Tingye, Yin Dawei, Hao Bingyuan, Cheng Hao, Shao Minghao
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Most hilly areas are dotted with gullies, some of which contain plenty of water, especially in rainy seasons. Once surface water penetrates the underground working face, it will lead to an increased water inflow of the working face. Even worse, it ma
Externí odkaz:
https://doaj.org/article/bb4a272f53254f0ba4e43b3702a5acdb
Autor:
Dongdong Chen, Jingkun Zhu, Qiucheng Ye, Xiang Ma, Shengrong Xie, Wenke Guo, Zijian Li, Zhiqiang Wang, Shaohua Feng, Xiangxiang Yan
Publikováno v:
Energies, Vol 16, Iss 6, p 2691 (2023)
China has abundant coal resources, and the distribution of coal seams is complex. Thick coal seams account for more than 45% of all coal seams. Fully mechanized top coal caving mining has the advantages of large production, high efficiency, and low c
Externí odkaz:
https://doaj.org/article/a8f9519fe1b94a769f6745f84642e1da
Publikováno v:
工程科学学报, Vol 40, Iss 3, Pp 302-312 (2018)
In geotechnical and mining engineering, numerous particle matters are involved in scientific and technical problems. Recognition and quantification of the structure and distribution of force chain networks using photoelastic experiments, for instance
Externí odkaz:
https://doaj.org/article/3e1df30dce2944f6b3e417eea3660083
Publikováno v:
Energies, Vol 13, Iss 2, p 305 (2020)
The combination of coal precise mining and information technology in the new century is one of the important directions for the future development of coal mining. Taking the fully mechanized top coal caving condition of a thick coal seam in the 90,10
Externí odkaz:
https://doaj.org/article/cc66e1591aac4df591f6bfda577b0deb
Akademický článek
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Akademický článek
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