摘要
依据亨健矿2505工作面下巷现场调查和监测,分析了巷道围岩变形破坏特点,研究了变形失稳机理,得出了支护系统与围岩的不耦合是影响巷道围岩稳定性的主要原因。针对此问题,应用耦合支护理论,构建了"锚杆+锚索+钢筋网+W钢带+槽钢"的新型锚网索支护技术,并对支护参数及支护过程进行优化,矿压观测结果表明,该技术达到了维护巷道稳定的目的。
According to the field observation and monitoring, the deformation and failure characteristics of surrounding rock were analyzed, the instability mechanism was studied. The result indicated main cause of the surrounding rock deformation and failure was the non - coupling of the support system and rock mass. Under this condition, a new support technique was proposed, comprising bolt, anchor, mesh reinforcement, W - type steel band and channel steel, parameters and procedure of the proposed support technique were optimized. Site monitoring and observations show that, the technique maintains the stability of mining roadway.
出处
《煤炭工程》
北大核心
2015年第5期33-35,38,共4页
Coal Engineering
基金
国家自然科学基金项目(51174070)
河北省自然科学基金项目(E2011402046)
关键词
回采巷道
变形机理
锚网索支护
耦合支护
控制技术
mining roadway
deformation mechanism
bolt - mesh - anchor support
coupling support
control technology
