标题：Study on Overlying Strata Movement and Structure Features Aroused by Mountainous Shallow Buried Coal Seam Mining
作者：Fan Kegong; Liu Guolei; Xiao Tongqiang; Zheng Lei
作者机构：[Fan Kegong; Zheng Lei] Shandong Univ Sci & Technol, Minist Educ, Key Lab Mine Disaster Prevent & Control, Qingdao 266510, Peoples R China.; [Fan Ke 更多
会议名称：2nd International Conference on Mine Hazards Prevention and Control
会议日期：OCT 15-17, 2010
来源：2010 INTERNATIONAL CONFERENCE ON MINE HAZARDS PREVENTION AND CONTROL
关键词：Mountainous shallow-buried coal seam mining; Movement of overlying; strata; Structure of overlying strata; "Two-zone" structure
摘要：When mountainous shallow- buried coal seam mined, the strata behaviors were intense and even some supports crushed or the tail beam and roof beam separated. Contraposing this phenomenon, it analyzed the overlying strata movement rule and structure features aroused by mountainous shallow-buried coal seam mining with Distinct Element Method. When mountainous shallow-buried coal seam mined, the overlying strata up to the surface would collapse, fall, and the horizontal displacement along mountain slope was apparent. The overlying strata would form relatively independent "two-zone" structure, the horizontal stress among the rocks was weak, and can not form bearing structure with necessary bearing property by itself. It made the load on supports increase and strata behaviors became intense. This article also pointed out the conditions to form this "two-zone" structure.