对赵固一矿开拓巷道底鼓机理进行了分析,确认巷道底鼓属于挤压流动性底鼓。采用高强度锚网索一次支护与长环形全封闭支架二次支护方式对底鼓巷道治理2个月后,巷道顶底板和两帮位移量都小于30 mm,巷道首次修复周期由2~3个月延长到10个月以上,保证了矿井生产的正常进行。 Analysis of the tunneling mechanism of the tunnel at Zhaogou Mine has been carried out to confirm that the tunnel bottom drum belongs to the squeeze mobility drum. After two months’ support to the bottom drumway roadway with the secondary support of the high-strength anchor net and the long-ring fully enclosed support, the top and bottom displacement of the roadway and the displacement of the two groups are all less than 30 mm, the first restoration period of the roadway is from 2 ~ 3 months extended to 10 months or more, to ensure the normal operation of mine production.