预加固一词系指在岩体开始暴露或采空其下部之前,借助于向裂隙注浆或者安装锚索,或者注浆与锚索相结合进行加固,以提高岩体强度、整体性和稳固性。预加固与随后加固(例如,在已经形成的巷道或采场内安装锚杆)和传统支护方式(金属支架、木支架、混凝土支架,等等)相比,其优点在于岩体暴露后加固构件(固结的浆体、锚索)立即承受载荷,保证维护岩体的整体性,亦即维护岩体的稳固性。根据H.г特鲁巴克的资料,视岩体破坏程度和加固区参数的不同,加固岩体下部的支架载荷可减少75％～80％,在其变形一致的情况下,甚至可减少80％～83％,从而可大量节约短缺的支护材料。 Pre-reinforcement refers to the reinforcement of rock mass strength, integrity and stability prior to the rock mass being exposed or emptied of its lower part by means of grouting or installing an anchor cable to the fracture, or a combination of grouting and anchor cable Sex. The advantage of pre-reinforcement and subsequent reinforcement (for example, the installation of anchors in already formed roadways or stopes) has the advantage over traditional support methods (metal supports, wood supports, concrete supports, etc.) Components (consolidated slurry, anchor cable) immediately bear the load, to ensure the maintenance of the integrity of rock mass, that is, to maintain the stability of rock mass. According to H.г Trubbach, depending on the degree of failure of the rock mass and the parameters of the reinforcement zone, the support load at the lower part of the reinforcement rock mass can be reduced by 75% -80%, and even under the same deformation, it can be reduced by 80% ~ 83%, which can save a lot of shortage of support material.