Evolution of crack field and formation mechanism of advantage gas channels in superposition mining
MA Haifeng, WANG Wenlong, LI Chuanming, SHI Wenbao, YUAN Anying, LIU Wanrong
China Safety Science Journal . 2017, (6): 133 -138 .  DOI: 10.16265/j.cnki.issn1003-3033.2017.06.023