The overall area of the -910 m water warehouse and part of the main road in Zhaogu No. 2  Mine was monoclinic structure, and the bottom plate of the No. 二1 coal seam was relatively broken due to the influence of the F17-1 boundary fault. In order to guarantee the safety of underground construction and ensure the efficient and fast mining, the L8 tuff water-bearing layer of the bottom plate of the coal seam was investigated and reinforced by using the ground area overrun grouting reinforcement management technology. This project adopted advanced fully automated grouting system, which guaranteed the quality of grouting while improved project management and quality, reduced management costs.