陕西煤炭2026，Vol.45Issue(1)：14-18,37,6.DOI:10.20120/j.cnki.issn.1671-749x.2026.0103
小煤柱切顶卸压下采场围岩承载特性研究
Bearing characteristics of stope surrounding rock under conditions of small-size coal pillar roof cutting and pressure relief
SU Shijie 1QI Xiaobo 2LU Xihui 1ZHAO Jianming 2LI Bing1
作者信息
- 1. Hulusu Coal Mine,Zhongtian Hechuang Energy Co.,Ltd.,Ordos 017000,China
- 2. Emergency Management Bureau of Ordos,Ordos 017000,China
- 折叠
摘要
Abstract
Aiming at the problem of large overburden stress and severe deformation of goaf-adjacent roadway under the con-ditions of deep buried small coal pillar,the numerical simulation on the bearing characteristics of surrounding rock around deep buried small-size coal pillar under conditions of roof cutting and pressure relief was carried out.The variation law of bearing stress of stope floor and supporting structure in goaf-adjacent entry during working face advance was analyzed,and the roadway protection mechanism of small coal pillar with roof-cutting and pressure-relief stope was revealed.The results show that under the conditions of deep buried coal pillar within working face bears most of overburden stresses during work-ing face advance.Under these circumstances,it is challenging for safe mining with conditions that small-size coal pillar was retained in the working face.By implementing roof cutting and lateral pressure relief,the support stress of the small coal pil-lar can be reduced by 21.1%,the stress of the advanced support regions can be reduced by 15.4%,and the overall stope stress has been greatly improved.Meanwhile,the stress of the support structure within the roadway is greatly reduced,which can significantly reduce the cost of support while ensuring the safe mining of coal,and ensure the safe and efficientmining of deep coal seams.关键词
小煤柱/切顶卸压/采场围岩/支护结构/承载机制Key words
small-size coal pillar/roof cutting and pressure relief/stope surrounding rock/support structure/bearing mecha-nism分类
矿业与冶金引用本文复制引用
SU Shijie,QI Xiaobo,LU Xihui,ZHAO Jianming,LI Bing..小煤柱切顶卸压下采场围岩承载特性研究[J].陕西煤炭,2026,45(1):14-18,37,6.
