Abstract: The application indicates that the drayage in roadway,where it has hydraulic connection with fault (fractured zone) and soft and broken strip on meet aquifer,will lead to water inrush and influent the safety status of coal mine.so it will be needed to research mechanism of water inrush,it is the key technology to adopt cross-coupling control for prevention water inrush surrounding the rock,according to effective stress working principle,the constitutive relations between dynamic water and rock contact pressure have been analyzed,the method of wall rock of the mine reinforcement by pre-grouting used primarily to prevent water inrush and plugging some fissures are put forward,the water-prevention rock pillar width rock arrangement, grouting parameters and technology and so on have been analyzed by theory and industrial experiments. According to analyze water-blocking the physical and mechanical parameters of the surrounding rock, the control improvement pre-grouting of the rock has economical,safety and credible properties.It also has applied values of engineering.