极近距离厚煤层房式采空区下综放开采覆岩破断失稳规律研究
汪北方, 刘春保, 梁冰, 张鑫磊, 张晶
Roof fracture and instability law of overlying strata in fully mechanized caving mining in ultra-close thick coal seams under the room mining goaf
采矿与安全工程学报 . 2020, (6): 1180 -1187 .  DOI: 10.13545/j.cnki.jmse.2020.06.012