15302 working face of Xindadi Mine locates in Ordovician water with pressure, with the increasing depth of mining, the Ordovician water pressure increased, with the water burst hazard, the safe mining evaluation of the working face mining with pressure was conducted, based on underground comprehensive geophysical exploration technology, combined with the geological condition on site, the geological structures and hydrological anomalies were explored, removing the water hazard in mining, the safe mining was ensured.