DOI: 10.11799/ce202107018
Multi-power drilling and enlarging for high-position large-diameter directional borehole in the roof underground coal mine
LIU Jian-lin
ZHAO Jian-guo
LI Quan-xin
WANG Chuan-liu
WANG Si-yi
LIU Fei
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Publication Date：2021-07-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 86-90 )