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pro vyhledávání: '"Yusan Shen"'
Publikováno v:
Energy Science & Engineering, Vol 7, Iss 6, Pp 2540-2553 (2019)
Abstract The successful retaining of the gob‐side entry under a thick and hard roof stratum is difficult because of the high pressure present and complex construction technology commonly used. To solve this problem, a new type of gob‐side entry s
Externí odkaz:
https://doaj.org/article/841f4032fe664003b757728211c5e42f
Publikováno v:
Energy Science & Engineering, Vol 7, Iss 6, Pp 2540-2553 (2019)
The successful retaining of the gob‐side entry under a thick and hard roof stratum is difficult because of the high pressure present and complex construction technology commonly used. To solve this problem, a new type of gob‐side entry supporting