上覆遗留煤柱下孤岛工作面小煤柱宽度研究  

Research on the Width of Small Coal Pillars Left in the Island Face under Overlying Coal Pillar

作　　者：李迎 赵丽娟[1] LI Ying;ZHAO Li-juan(School of Coal Engineering,Shanxi Datong University,Datong Shanxi,037009)

机构地区：[1]山西大同大学煤炭工程学院,山西大同037009

出　　处：《山西大同大学学报（自然科学版）》2022年第6期103-109,共7页Journal of Shanxi Datong University(Natural Science Edition)

基　　金：2021年山西省高等学校教学改革创新项目[J2021485]。

摘　　要：以同忻矿8102孤岛工作面为研究背景,通过理论分析和计算,得到合理的小煤柱留设宽度范围;通过Flac数值模拟,分析8102孤岛工作面小煤柱的应力降低区,选取最佳的小煤柱留设宽度为6 m;分析上覆煤层遗留煤柱对8102孤岛工作面的应力影响规律,对应力增高区域进行针对性加强支护措施,以保证工作面安全高效开采及小煤柱合理宽度的留设。The 8102 island face in Tongxin Mine was taken as the research background,the reasonable range of width of small coal pillars in the island face under overlying coal pillar was obtained through theoretical analysis and calculation.Through Flacnumerical simulation,the stress reduction area of small coal pillar in 8102 island working face was analyzed.The optimal small coal pillar retention width is 6m.The influence law of the coal pillars left in the overlying coal seam on the stress of the 8102 island working face was analyzed.Targeted strengthening support measures were carried out in the area with increased stress to ensure the safe and efficient mining of the working face and the reasonable width of small coal pillars.

关 键 词：孤岛工作面 留设宽度 FLAC3D 上覆遗留煤柱 应力影响 

分 类 号：TD822.3[矿业工程—煤矿开采]