煤矿回采巷道锚网索联合支护技术探析

Exploration of Combined Anchor Mesh Cable Support Technology for Coal Mine Retrieval Roadway

针对霍州煤电集团某矿2-216回采巷道围岩不稳定、结构面强度低、巷道岩石较破碎,在正常回采作业中,受地质构造、临近作业面开采扰动以及周期来压等因素的综合影响下,存在较难支护、维护成本高的问题,提出了锚杆锚索联合支护方案并进行实际应用,经观测巷道变形量发现,应用锚网索联合支护方案后,巷道顶板不再出现离层现象,巷道变形量较小,有效保障了巷道的安全回采。

In view of the unstable surrounding rocks,low structural surface strength and broken rocks of the 2-216 back mining roadway in a mine of Huozhou Coal and Electric Power Group,the roadway is difficult to support and high maintenance cost in normal back mining operation under the combined influence of geological structure factors,mining disturbance factors in the adjacent workings and periodic incoming pressure.It is found that after applying this anchor mesh rope joint support scheme,the top plate of the roadway no longer appears to be separated from the layer,and the deformation of the roadway is smaller,which effectively ensures the safe recovery of the roadway.