The application and study of water plugging in fault fracture zone by the double serous curtain grouting

In order to prevent Zhou Yuanshan coal mine from flood caused by Bao Li fault leakage at northeast of the mine field, double-serous-liquid-grouting and reinforced concrete layer are adopted to prevent the leakage, the construction scheme of grouting and laying reinforced concrete, the design of the parameters and the construction technology are introduced in details. It can be seen from the test results and the rock samples that the expected effect are achieved by adopting the double-liquid grouting in view of the fault leakage, the water inflow in the mine decreases evidently.