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切顶巷防治技术是指预先在工作面上顺槽与瓦斯高抽巷之间开挖一系列巷道(切顶巷),对顶板进行弱化,当工作面推进到切顶巷区域时,顶板发生破断,避免形成大面积悬顶,从而降低冲击危险性。以桃山矿为工程研究背景,通过设置切顶巷降低了冲击危险性,取得了显著效果,验证了薄煤层群开采切顶巷防冲技术的可行性。
Top-cut roadway prevention and control technology refers to cutting a series of roadways (cut-top roadway) between the workway and the high gas pumping roadway in advance to weaken the roof. When the working face is pushed to the top of the cut roadway, the roofing occurs Broken, to avoid the formation of large-scale suspended roof, thereby reducing the risk of impact. Taking the Taoshan Mine as the research background, the impact hazard is reduced by setting the top clearance roadway, and the remarkable effect has been achieved. The feasibility of the anti-punching technology of the top coal mining in the thin seam group is verified.