Zobrazeno 1 - 1
of 1
pro vyhledávání: '"reinforcement support for abandoned roadway"'
Publikováno v:
Gong-kuang zidonghua, Vol 46, Iss 6, Pp 6-11 (2020)
Taking the 6-2116 fully mechanized coal mining face of No.2 shaft of Nalinmiao Coal Mine as the engineering background, in view of problems of large coal consumption and difficult coal transport in abandoned roadway backfilling on coal pillar recover
Externí odkaz:
https://doaj.org/article/e770d3c2c5994918a65a4d451bd4a58b
