近距离房柱采空区下长壁采场顶板垮落特征研究
杨真, 童兵, 黄成成
Study of Caving and Fracturing over A Longwall Panel Beneath A Goaf Mined by Room and Pillar
YANG Zhen, TONG Bing, HUANG Cheng-Cheng
采矿与安全工程学报 . 2012, (2): 157 -161 .