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以跃进煤矿弱冲击区域25020下巷掘进巷道为试验区域,分区段采用锚网索+36U圆弧拱棚、锚网索+36U可缩梯形棚、锚网索无架棚3种方案进行支护试验,通过对比分析各自支护条件下巷道顶板下沉情况,确定锚网索无架棚支护效果,并总结出该支护形式巷道顶板下沉规律,为该矿冲击地压煤巷掘进提供新的有效支护选择。
Taking the tunneling tunnel of 25020 lower tunnel in the weak impact area of Yuejin coal mine as the test area, the three sections of anchor tunnel + 36U arc arch shed, anchor net + 36U retractable ladder shed, By contrasting and analyzing the situation of tunnel roof sinking under the condition of supporting each other, the supporting effect of the anchorage net without shelter was determined and the roof sinking rule of the roadway was summed up to provide a new Effective support options.