黑龙江科技大学学报2025，Vol.35Issue(6)：882-887,6.DOI:10.3969/j.issn.2095-7262.2025.06.003
近距离煤层回采工作面分段充填过空巷的数值模拟
Numerical simulation on sublevel filling across empty roadway in mining face of close distance coal seam
摘要
Abstract
This paper aims to address the severe deformation of empty roadways,the large-scale roof fall and frame collapses caused by the methods of traditional reinforcement support and timber support during the below coal seam working face going through the empty roadway.Taking the 21802 mining face in contiguous seam at Dongrong No.3 Mine as the research subject,based on the pressure-bearing char-acteristics of high-water-content rapid-setting materials,the study proposes a segmented isolation backfill-ing technique for empty roadways;and by using 3DEC software,analyzes analyzes the roof displacement and stress variation of the upper coal seam mining face and the impact of different backfill widths on roof displacement and stress changes in empty roadways.The results indicate that as the backfill intervals at 5 meter with 3,5,and 7 meter backfill widths,the roof subsidence of the empty roadway measures 35,17,and 8 mm respectively.This method of 5 meter interval with 7 meter backfill can effectively mitigate the effects of repeated mining activities and mining face passing through the empty roadway on both the working face roof settlement and the surrounding rock movement in the empty roadway.关键词
近距离煤层/空巷/顶板失稳/分段充填/围岩运动Key words
close distance coal seam/empty roadway/roof instability/sublevel fill/rock mass move-ment分类
矿业与冶金引用本文复制引用
Jin Zhupeng,Liu Feiyang,Lin Yang,Fan Xianshun..近距离煤层回采工作面分段充填过空巷的数值模拟[J].黑龙江科技大学学报,2025,35(6):882-887,6.基金项目
黑龙江省"揭榜挂帅"科技攻关项目(2021ZXJ02A03) （2021ZXJ02A03）
