浅埋近距离采空区下综放开采覆岩运动规律研究  

Study on Overlying Strata Movement Behavior Discipline of Shallow Coal Seam Fully-Mechanized Caving Face

作　　者：张云峰[1,2] 李伟豪[2] 

机构地区：[1]神华集团上榆泉煤矿,山西河曲036500 [2]中国矿业大学矿业工程学院深部煤炭资源开采教育部重点实验室,江苏徐州221116

出　　处：《煤炭技术》2016年第2期10-12,共3页Coal Technology

摘　　要：结合上榆泉矿的工程地质条件,通过理论分析、数值模拟等方法研究了浅埋近距离采空区下综放工作面覆岩运动规律。理论分析表明:工作面覆岩关键层破断后形成"悬臂梁"结构;工作面背坡推进时,悬臂梁易于在支架后切落卸载,支护空间内整体矿压显现不明显;迎坡推进时,主关键层缺乏侧向水平力无法自稳,"铰接结构"易于活化失稳,切落悬臂梁易形成动载矿压灾害。Based on the geological conditions in Shangyuquan coal mine, the overlying strata movement of fully mechanized caving face under goaf of shallow coal seam was studied, using the theory analysis and numerical simulation. The results show that the key strata of full-mechanized caving face final formed overhanging beam structure; during downhill advancing, overhanging beam would cut down behind the hydraulic support, so the overall mine pressure appearance was not obvious; during downhill advancing, loss of primary key stratum led to the deletion of horizontal side force, in which case the key stratum could not form stable structure, forming strong ground dynamic pressure as cutting down.

关 键 词：浅埋煤层 综放工作面 悬臂梁 关键层 

分 类 号：TD823.81[矿业工程—煤矿开采]