The mining of deep coal resources faces the threat of high pressurized water, for which the hydrogeological conditions of 8103 working face of Baizhuang Mine were analyzed, including the influence of goaf water, four-gray aquifer, five-gray aquifer, gray aquifer and fault water damage on the mining of the test working face. The results showed that the mining of 8103 working face was mainly threatened by the floor pressurized water, and after using grouting and ash aquifer hydrophobic pressure reduction to prevent and control, the electromagnetic detection of grouting prevention and control was effective, which realized the safe mining.