矿业科学学报2025，Vol.10Issue(4)：648-660,13.DOI:10.19606/j.cnki.jmst.2025014
西部矿区特大采高工作面覆岩破断运移全周期动态演化特征
The whole-cycle dynamic evolution characteristics of overburden fracture and movement in extremely high mining longwall face in western mining area
摘要
Abstract
In order to explore the structural characteristics and movement laws of overburden damage and fracture in the extremely high mining longwall face in the western mining area,the 8.8 m extreme-ly high mining longwall face of Shangwan Coal Mine was used as the research background.Based on the field measurement results,physical modeling and other methods,the geological characteristics of medium burial depth,thick bedrock and inherent mining damage conditions of overlying rock damage and its spatiotemporal evolution process were studied.The results show that:the damage height of over-lying rock shows a"stepwise"development and evolution process.It reveals the"three-zone"fracture mode of overlying rock in extremely high mining longwall face under special geological conditions and the restraining effect of the combination of thick and soft rock layers above the primary key strata on mining damage.The main roof collapsed in the goaf in the form of a"caved rock block",while the pri-mary key strata formed a"masonry beam"structure.The"non-uniform"characteristics of overlying rock subsidence were formed in the form of"collaborative subsidence groups"when the overlying rock broke and settled.The subsidence of overlying rock showed the non-linear decrease with the decrease of burial depth,and the surface movement was uniform with the bending of thick and soft rock layers,with the subsidence coefficient of 0.58.关键词
特大采高/厚覆岩/覆岩破断/采动损伤传导Key words
extremely high mining/thick overburden/overburden fracture/mining damage conduction分类
矿业与冶金引用本文复制引用
任赵鹏,樊柏强,程聚豪,李晓斌,李全生,张村,韩鹏华..西部矿区特大采高工作面覆岩破断运移全周期动态演化特征[J].矿业科学学报,2025,10(4):648-660,13.基金项目
国家自然科学基金(52104155,51904302,52404109) （52104155,51904302,52404109）
北京市自然科学基金(8212032) （8212032）
煤炭开采水资源保护与利用国家重点实验室开放基金(WPUKFJJ2019-15) （WPUKFJJ2019-15）
