煤炭与化工2024，Vol.47Issue(11)：33-36,124,5.DOI:10.19286/j.cnki.cci.2024.11.008
破碎围岩巷道注浆锚索加固机理分析及其应用
Mechanism analysis and application of grouting anchor cable reinforcement in roadway with broken surrounding rock
郭朝华1
作者信息
- 1. 山西新景矿煤业有限责任公司,山西阳泉 045000
- 折叠
摘要
Abstract
Through the analysis of the original support mode of the driving face affected by the dynamic pressure of the goaf of Shanxi Xinjing Mine,the reason of the stress damage of the coal pillar and the reinforcement mechanism of the grouting anchor cable support mode were expounded.The grouting anchor cable construction technology was used to optimize the reinforcement scheme,and the different anchor cable support parameters of the roadway roof,the side of the coal pillar and the side of the solid coal were determined.The application results showed that the convergence of the two sides was reduced to 175.9 mm,and the convergence was reduced by 72.7％.The roof subsidence decreased to 77.66 mm,with a decrease of 79.3％.The measured values of the pull-out force test of the anchor cable exceeded the standard requirement of 150 kN,and the grouting anchor cable reinforcement scheme had achieved remarkable results.关键词
保护煤柱/顶板离层/注浆锚索/支护方案Key words
coal pillar protection/roof separation layer/grouting anchor cable/support scheme分类
矿业与冶金引用本文复制引用
郭朝华..破碎围岩巷道注浆锚索加固机理分析及其应用[J].煤炭与化工,2024,47(11):33-36,124,5.
