Zobrazeno 1 - 1
of 1
pro vyhledávání: '"ZHANG Xizhai, WANG Wenlin"'
Autor:
ZHANG Xizhai, WANG Wenlin
Publikováno v:
Meikuang Anquan, Vol 51, Iss 10, Pp 168-172 (2020)
The mining of thick coal seam is different from the mining of general thick coal seam. The thickness of the first mining is increased, which makes the space of overlying strata rotary movement increase, and it is easy to induce more intense mine pres
Externí odkaz:
https://doaj.org/article/02a0f5378d30414ab627edf889a44a04
