老洼地煤矿110101运输巷支护参数优化分析研究
Optimization Analysis and Research on Support Parameters of the 110101 Transportation Roadway in Laowadi Coal Mine
张冲1
作者信息
- 1. 盘州市能源局,贵州 六盘水 553000
- 折叠
摘要
针对老洼地煤矿 110102 运输巷巷道变形较为严重的问题,运用钻孔窥视确定围岩松动圈,运用应力解除法测量原始应力,结合FLAC3D软件分析巷道应力情况及应力演化规律,在原支护方案上进行改进.结果表明:巷道优化后其顶板下沉量减小了 40%,底鼓量减小了 50%,左帮收缩量减小了 60%,右帮收缩量减小了 33.3%;优化后其顶板应力减小了 25%,底板应力减小了 26.3%,左帮应力减小了 66.7%,右帮应力减小了57.1%;实现了安全高效回采.
Abstract
In response to the serious deformation problem of the 110102 transportation roadway in Laowadi Coal Mine,drilling peeping is used to determine the loose circle of the surrounding rock,stress relief method is used to measure the original stress,the stress situation and stress evolution law of the roadway are analyzed combined with the FLAC3D software.Improvements are made to the original support scheme.The results show that after optimizing the roadway,its roof subsidence amount decreases by 40%,the floor heave amount decreases by 50%,the left side shrinkage amount decreases by 60%,and the right side shrinkage amount decreases by 33.3%;After optimization,its roof stress decreases by 25%,the floor stress decreases by 26.3%,the left side stress decreases by 66.7%,and the right side stress decreases by 57.1%;Safe and efficient stoping is achieved.
关键词
煤巷/支护/优化Key words
coal roadway/support/optimization引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据