陕西煤炭2026，Vol.45Issue(3)：15-20,53,7.DOI:10.20120/j.cnki.issn.1671-749x.2026.0303
煤矿深部开采工作面覆岩运动特征分析及应力分布规律研究
Movement characteristics of overlying strata and stress distribution law in deep mining face of coal mine
摘要
Abstract
Aiming at the movement characteristics and stress distribution law of multi-key strata groups in overlying strata during the deep mining process,this paper comprehensively applies theoretical analysis and numerical simulation methods to study,revealing that there are several key strata above the deep working face in a mine under the conditions of deep mining,among which 6.88 m fine sandstone is low key strata,and 9.66 m fine sandstone is high key strata.Each key strata,espe-cially the lower key strata,goes through the stages of fracture and caving,accompanied by the phenomenon of stress redistri-bution.Because of its large thickness and high strength,the upper key strata becomes the key factor affecting the stability of overlying rock,and its periodic fracture directly leads to periodic pressure of working face.In addition,the stress distribution above the goaf and around the coal wall is analyzed in detail.The principal stress of the two sides reaches a peak value of 21.34 MPa when the working face advances 100 meters and then begins to decrease,and finally a stable stress distribution pattern is formed after the rock mass is compacting in the middle of the goaf.关键词
深部开采/多关键层/数值模拟/应力分布规律Key words
deep mining/multiple key strata/numerical simulation/stress distribution law分类
矿业与冶金引用本文复制引用
胥海东,张艺耘,辛广伟,吴鹏华..煤矿深部开采工作面覆岩运动特征分析及应力分布规律研究[J].陕西煤炭,2026,45(3):15-20,53,7.基金项目
山东省自然科学基金优秀青年基金项目(ZR2022YQ49) （ZR2022YQ49）
