By analyzing the hydrogeological characteristics of water-filling sources, water-filling channels, and water-filling intensity in the Zhangjiamao Mine, it was determined that the overlying bedrock fracture bearing water and sandstone fracture water of Yan'an group were the main water-filling sources, and the coal mining guide fracture zone was the main protruding water channel. Based on the calculation results of the height value of the coal mining crack zone of each coal seam, the partition prediction of the safety of the top plate emergence crack of each coal seam was made, and the results showed that most of No.3 coal seam was the crack unsafe region, and the mining areas of No.4 and No.5 coal seam were all the crack unsafe region.