辽宁工程技术大学学报（自然科学版）2026，Vol.45Issue(2)：129-136,8.DOI:10.11956/j.issn.1008-0562.20250416
基于离散-连续耦合方法的底抽巷围岩破坏规律
Bottom pumping roadway based on discrete-continuous coupling method
摘要
Abstract
To reveal the evolution patterns of surrounding rock failure in the bottom pumping roadway during coal seam mining,this study investigates the 2901 working face bottom drainage tunnel in a coal mine.A continuous-discrete coupled multiscale numerical simulation method was employed,supplemented by field borehole observations for validation.The results indicate that the number of rock particle force chains evolves through three distinct phases with mining advancement:initial stable stage,rapid decay stage,and dynamic stabilization stage.Fracture evolution follows a multi-scale"point-line-surface"pattern,with failure predominantly concentrated on the left rib and roof,exhibiting significant asymmetry.Based on the results of borehole peeping,the roof is divided into three zones:fully developed joint zone,micro-joint initiation zone,and stable coal-rock interface zone.The research conclusions provide a theoretical basis for the stability analysis of roadway surrounding rock under similar conditions.关键词
底抽巷/回采/围岩破坏/力链/裂纹Key words
bottom pumping roadway/coal seam mining/surrounding rock damage/force chain/cracks分类
矿业与冶金引用本文复制引用
范超军,张佳绩,罗明坤,兰天伟,李胜,蒋晓锋,杨雷..基于离散-连续耦合方法的底抽巷围岩破坏规律[J].辽宁工程技术大学学报（自然科学版）,2026,45(2):129-136,8.基金项目
辽宁省"兴辽英才"计划项目(XLYC2202022) （XLYC2202022）
鄂尔多斯市科技计划资助项目(YF20250261) （YF20250261）
辽宁工程技术大学鄂尔多斯研究院校地科技合作培育项目(YJY-XD-2024-A-009) （YJY-XD-2024-A-009）
