In order to improve the filling rate of filling mining and underground construction， reduce the number of strata subsidence， a high solid water filling material was developed by Hebei Coal Science Institute， a variety of application in mines was studied， high rate water slurry quick-setting filling material with high solid water rate and good permeability performance， could well meet the needs of the underground filling mining and the water prevention and control， with good application effect in mine gas prevention and control， coal seam water injection hole sealing and wall U-shape set reinforcement and other underground safety and rescue， etc