应用于煤矿沿空留巷的巷内锚杆支护工艺优化研究

Optimization of In-Road Anchor Support Process Applied to Coal Mines along the Hollow Stay

为了提高沿空留巷巷道围岩控制能力,以某煤矿沿空留巷布置方案为研究对象,详细指出了顶板锚杆锚索同排布置导致的主要问题,并针对实际情况提出将留巷顶板锚杆锚索布置方式变为隔排间隔布置、调整锚杆锚索安装角度、增加锚杆锚索支护强度、改善锚杆锚索及其附件托板的合理配套、加大锚杆锚索预应力水平的优化方案,取得了良好应用成效。

In order to improve the ability of controlling the surrounding rock of the lane along the open stay lane,the main problems caused by the arrangement of anchor rods and anchor cables in the same row in a coal mine were pointed out in detail,and the main problems caused by the arrangement of anchor rods and anchor cables in the roof of the open stay lane were proposed in detail.The optimized solution of increasing the pre-stress level of anchor rods and anchor cables has achieved good application results.