基于松动圈理论的巷道顶板支护优化研究  

Study on Optimization of Roadway Roof Support Based on Loose Circle Theory

作　　者：白林涛 Bai Lintao(China Coal Tianjin Design Engineering Co.,Ltd.,Tianjin 300131)

机构地区：[1]中煤天津设计工程有限责任公司,天津300131

出　　处：《山东煤炭科技》2023年第3期215-217,共3页Shandong Coal Science and Technology

摘　　要：为解决22103工作面矩形巷道顶板受采动影响易发生破坏问题,采用理论计算、数值模拟等手段分析了巷道失稳破坏的原因,并通过支护优化进行改善。结果表明:将巷道顶板锚杆由Ф21.8 mm×2500mm换成Φ21.8 mm×5300 mm后,巷道顶板、底板、左帮、右帮围岩变形分别减少至40 mm、34 mm、29mm、38 mm,巷道围岩变形量得到有效控制。In order to solve the problem that the roof of rectangular roadway in the 22103 working face is easy to be damaged due to mining,the causes of roadway instability and damage are analyzed by means of theoretical calculation and numerical simulation,and improved by support optimization.The results show that after the roadway roof bolt is changed fromФ21.8 mm×2500 mm toΦ21.8 mm×5300 mm,the deformation of surrounding rock of roadway roof,floor,left side and right side decreased to 40 mm,34 mm,29 mm and 38 mm,respectively,and the deformation amount of roadway surrounding rock is effectively controlled.

关 键 词：矩形 巷道 支护 优化 

分 类 号：TD353[矿业工程—矿井建设]