Zobrazeno 1 - 1
of 1
pro vyhledávání: '"reinforcing anchor cable"'
Publikováno v:
Meikuang Anquan, Vol 51, Iss 12, Pp 237-243 (2020)
Based on the engineering geological conditions of the hard roof of the medium thick coal seam in Dadougou Coal Mine, in order to implement the non-pillar mining technology of roof cutting and pressure release, the key parameters of roof cutting and r
Externí odkaz:
https://doaj.org/article/6c19bafaecea4e65b69e7adba8936205
