Zobrazeno 1 - 1
of 1
pro vyhledávání: '"pre-drainage zoning"'
Autor:
YANG Liping
Publikováno v:
Gong-kuang zidonghua, Vol 45, Iss 7, Pp 5-9 (2019)
At present, single borehole spacing is generally used to pre-drainage gas on high gas working face. But in the design of pre-drainage boreholes, influence of geological structure and other factors on the design of pre-drainage area are not considered
Externí odkaz:
https://doaj.org/article/46ee2421a7cd4a40945390b21d828f52
