巷道中锚杆支护技术的对比分析研究

Comparative Analysis Study of Anchor Rod Support Technology in Roadways

以某矿为研究对象,对巷道进行初步锚杆支护设计后,发现巷道两帮和角部的位移变形量均比较大。基于此,引入强帮强角锚杆支护设计方案,并对支护后的巷道位移进行监测,结果表明:通过增大锚杆的长度和直径,同时将帮部最上排锚杆倾斜一定角度,不仅可实现强帮达到强顶的支护效果,且改善了围岩的应力状态,控制了巷道的变形,保证了巷道的安全性。

After the preliminary anchor rod support design for a mine, it was found that the displacement and deformation of both gangs and corners of the roadway were relatively large, indicating poor support effect. The results showed that by increasing the length and diameter of the anchor rods and tilting the uppermost row of anchor rods to a certain angle, not only could the support effect of strong gang reach strong top be achieved, but also improved the stress state of the surrounding rock, controlled the deformation of the roadway and ensured the safety of the roadway.