Zobrazeno 1 - 1
of 1
pro vyhledávání: '"main transportation roadway"'
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 61-68 (2024)
When the mining relationship between the upper coal seam working face and the lower coal seam roadway in the close distance coal seam changes, the deformation and instability mechanism of the surrounding rock of the roadway will be more complicated.
Externí odkaz:
https://doaj.org/article/aa9a8ebb1ea44eb4bc61cb21e77f37d6
