Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Shigui FU"'
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 7, Pp 89-100 (2024)
Aiming at the problem that the crack extension law of deep high-gas coal seams is not clear during blasting and permeability enhancement under the action of ground stress, firstly, according to the propagation and superposition of blasting stress wav
Externí odkaz:
https://doaj.org/article/f36bf1d8252144b392840d8a8f4982f5
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 6, Pp 102-110 (2024)
Aimed at the problems of difficult drilling construction of blast penetration, undeveloped fractures produced by blast penetration, and the fractures is easy to recompact in the soft coal seam, the blasting operations carried out in the floor was pro
Externí odkaz:
https://doaj.org/article/42111e8b33bb4ce4a653d40aa6d7fd2c
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 3, Pp 129-138 (2024)
In order to solve the problem of poor permeability enhancement effect caused by disorderly expansion of coal cracks in traditional presplitting blasting, the influence of different opening angles of shaped charge blasting cartridge on permeability en
Externí odkaz:
https://doaj.org/article/a83f99f8663849f392d97a56119f5242
Publikováno v:
International Journal of Coal Science & Technology, Vol 11, Iss 1, Pp 1-20 (2024)
Abstract Coalbed methane (CBM) is a significant factor in triggering coal and gas outburst disaster, while also serving as a clean fuel. With the increasing depth of mining operations, coal seams that exhibit high levels of gas content and low permea
Externí odkaz:
https://doaj.org/article/899052ad01374fc4b469613de4a85b2b
Publikováno v:
Geofluids, Vol 2022 (2022)
To address the problems with deep-hole presplit blasting intended to fracture and improve the permeability of deeply buried, soft, high-gas-content coal seams, a method using a blasthole and a relief hole drilled into the underlying rock stratum was
Externí odkaz:
https://doaj.org/article/33438631d8114677a56e12a55e11ce5f
Publikováno v:
Shock and Vibration, Vol 2022 (2022)
To study the influence of high ground stress on crack propagation and stress propagation during deep rock blasting, a theoretical model of blasting stress wave propagation and rock damage under in situ stress conditions is developed. The implicit-dis
Externí odkaz:
https://doaj.org/article/592ed02c127a4bd6ba670bff22f44063