Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Changbao JING"'
Publikováno v:
Meikuang Anquan, Vol 54, Iss 12, Pp 64-72 (2023)
In order to study the characteristics of low-temperature oxidation of weakly viscous coal under different gas concentration conditions inside the mining area and the change law of kinetic parameters, this paper adopts the coal spontaneous combustion
Externí odkaz:
https://doaj.org/article/4c50511aac6b460c879005b6e4cb01ed
Publikováno v:
Meikuang Anquan, Vol 54, Iss 10, Pp 201-205 (2023)
Aiming at the problems existing in the construction of high directional drilling in Tingnan Coal Mine roof, such as stratum breakage in open hole section, mudstone shrinkage in directional hole section, low efficiency of two-stage reaming and easy pl
Externí odkaz:
https://doaj.org/article/a33f86723a3140b39c459a1893719ed2