巷道联合支护控制技术及围岩变形规律研究

Study on Control Technology of Roadway Combined Support and Deformation Law of Surrounding Rock

本文以木瓜煤矿南区左翼下组煤辅助运输巷支护控制为研究对象,提出了锚网索喷联合支护控制技术,通过数值模拟分析了联合支护技术的围岩变形及塑性区发展控制效果。结果表明,该支护技术能够有效控制围岩变形,巷道顶板下沉量减小了52%,两帮变形量减少约45.5%,巷道围岩塑性区范围明显减小,工程支护控制效果良好。

In this paper,taking the support control of coal auxiliary transport roadway in the left lower group of Mugua Coal Mine as the research object,the combined support control technology of anchor mesh cable shotcreting is put forward,the surrounding rock deformation and plastic zone development control effect of the combined support technology are analyzed by numerical simulation.The results show that the support technology can effectively control the surrounding rock deformation,the roadway roof subsidence is reduced by 52%,the deformation of the two sides is reduced by about 45.5%,the range of the plastic zone of roadway surrounding rock is obviously reduced,and the engineering support control effect is good.