回采巷道围岩稳定性分类及支护问题探讨

Discussion on Stability Classification of Surrounding Rock and Supporting Problems of Mining Roadways

以A矿井2号煤层为例进行了回采巷道围岩稳定性分类问题分析,并将回采巷道围岩稳定程度划分为5个等级,针对不同等级提出支护措施。分析结果表明,煤矿回采巷道因受矿山应力及采动、顶底板岩性特征、地质构造等方面的综合影响,在工作面未完成回采时,巷道变形破坏严重。因此,在分析巷道变形破坏特征及原因的基础上,选择合适的支护形式对于提升巷道开采质量、满足矿井安全生产作用重大。

Taking No.2 coal seam of A Mine as an example,this paper carried out the analysis of the stability classification of the surrounding rock of the mining roadway,and divided the stability of the surrounding rock of the mining roadway into 5 grades,proposed supporting measures for different grades.The analysis results show that due to the comprehensive influence of mine stress and mining,lithological characteristics of roof and floor,geological structure,etc.,the roadway deformation and damage are serious when the mining face is not completed.Therefore,selecting the appropriate support form on the basis of analyzing the characteristics and causes of roadway deformation and failure plays a significant role in improving the quality of roadway mining and meeting the safety of mine production.