煤炭与化工2026，Vol.49Issue(7)：15-21,7.DOI:10.19286/j.cnki.cci.2026.07.003
近距离煤层重复采动顶板离层发育特征研究
Study on development characteristics of repeated mining roof separation in close distance coal seam
董岩霖1
作者信息
- 1. 中煤科工集团沈阳研究院有限公司,辽宁沈抚示范区 113122||煤矿安全技术国家重点实验室,辽宁沈抚示范区 113122
- 折叠
摘要
Abstract
Due to the properties of rock strata,uneven subsidence of overlying rocks was induced by coal seam mining.Interlayer separation was easily formed between hard rocks and soft rocks.The space of separation layers was altered during repeated mining of adjacent coal seams,and water inrush disasters from sealed separation layers were likely to occur after water accumulation in such layers.The failure characteristics of roof overlying rocks were investigated,the development height of water flowing fractured zones under repeated mining was determined,and then the strata positions of sealed separation layers in the roof after mining were identified.With the UDEC simulation software,the development characteristics of sealed separation layers were analyzed.By adopting the control variable method,the influences of coal mining height,coal seam interval and thickness of mudstone below sealed separation layers on separation layer development were studied within the mine field.The strata positions of disaster-prone separation layers were confirmed.Further researches revealed that under repeated mining,the space of sealed separation layers was enlarged with the increase of coal mining height,reduced with the increase of coal seam interval,and decreased with the increase of the thickness of underlying mudstone.关键词
重复采动/覆岩破坏/离层特征/数值模拟Key words
repeated mining/overburden rock failure/separation layer characteristics/numerical simulation分类
矿业与冶金引用本文复制引用
董岩霖..近距离煤层重复采动顶板离层发育特征研究[J].煤炭与化工,2026,49(7):15-21,7.
