除冒顶外水和瓦斯的危害是地下矿山最危险的灾害。水患是由围岩、矿体本身和覆盖岩层的水和流砂涌入巷道造成的。顶板冒落与下列因素有关:上覆岩层强度的不均匀性,顶板的层状结构;裂隙密度和弱面状况等。上述自然灾害可用各种方法加以控制,注浆固结和封堵就是方法之一。控制自然灾害的注浆方法和手段的选择是根据水文地质、物理化学和经济三个条件。水文地质条件对注浆技术的可行性和注浆材料的可注性 In addition to the top water and gas hazards is the most dangerous underground mine disaster. Flooding is caused by the surrounding rock, the ore body itself and the water and sand flowing over the rock formations into the roadway. Roof caving is related to the following factors: the inhomogeneous strength of the overburden, the lamellar structure of the roof, the crack density and the condition of the weaker surface. The above natural disasters can be controlled by a variety of methods, grouting consolidation and sealing is one of the methods. The choice of grouting methods and means to control natural disasters is based on three conditions: hydrogeology, physical chemistry and economy. The feasibility of hydrogeological conditions for grouting technology and the injectability of grouting materials