煤炭与化工2025，Vol.48Issue(4)：33-35,40,4.DOI:10.19286/j.cnki.cci.2025.04.007
近距离煤层群多次采动条件覆岩"三带"特征模拟研究
Simulation study on"three zones"characteristics of overlying rock under multiple mining conditions in close distance coal seam group
白付干 1李润芝 2刘义孟 1白壁 1薛恩思 3穆小峰3
作者信息
- 1. 山西省中阳荣欣焦化有限公司,山西 吕梁 033400
- 2. 煤炭科学研究总院,北京 100013||中煤科工集团沈阳研究院有限公司,辽宁抚顺 113122||煤矿安全技术国家重点实验室,辽宁抚顺 113122
- 3. 中煤科工集团沈阳研究院有限公司,辽宁抚顺 113122||煤矿安全技术国家重点实验室,辽宁抚顺 113122
- 折叠
摘要
Abstract
In order to explore the destruction law of roof clad rock under the influence of multiple mining of close distance coal seam group,the upper coal group of Gaojiazhuang Mine was taken as the research object,the FLAC numerical model was constructed to simulate the destruction form and movement law of overlying coal rock mass when mining the No.3 coal seam.The results showed that:under the condition of many mining,the goaf rock movement trend was similar,but overburden subsidence increased significantly,and presented the movement of the overall coordinated subsidence,overburden damage degree increased,especially part of the cycle to pressure,broken rock stepped sinking,showing the characteristics of local displacement field evolution.The simulation results showed that the rock layer within 15m above the working face of No.3 coal seam was in the range of collapse zone,and the range of 35m above No.3 coal seam might be a crack zone;the damage degree of the first coal seam was more obvious.关键词
近距离煤层群/多次采动/覆岩"三带"特征/模拟研究Key words
close distance coal seam group/multiple mining/"three belts"characteristics of the rock cover/simulation study分类
矿业与冶金引用本文复制引用
白付干,李润芝,刘义孟,白壁,薛恩思,穆小峰..近距离煤层群多次采动条件覆岩"三带"特征模拟研究[J].煤炭与化工,2025,48(4):33-35,40,4.
