In order to ensure the phenomenon of no water inrush from the bottom of the 11-101 working face, the specific analysis of the aquifer and the aquifer in the working face was carried out, and the DC water depth detection method was used to detect and analyze the water content of the bottom surface of the working face. It was concluded that there were five low-resistance anomalies in the working surface floor, and the grouting and waterproofing scheme of the low-resistance anomaly area was specifically designed according to the specific conditions of the working surface. In the working face mining process, the waterproof effect of the floor grouting was carried out through on-site observation. analysis. The results showed that after the low-resistance anomaly area of 11-101 working face adopted the grouting waterproofing scheme of the bottom plate, there was no water inrush in the low-resistance anomaly area during the recovery, which eliminated the threat of the water inrush from the floor and the working face.