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高压喷射灌浆技术与工艺在水工建筑物防渗工程中已得到广泛应用。该施工方法是将带有部分特殊水、气喷嘴与注浆管置于地层预定深度后,以同轴高压水、气射流切割地层,并利用气体的升扬置换作用,将原地层中的部分细颗粒带出地层,随之以水泥浆液填充空隙并形成凝结体。本文着重介绍了该技术的作用原理及其在桐城市境主庙水库除险加固工程施工中的具体应用。
High-pressure jet grouting technology and technology in hydraulic engineering seepage control project has been widely used. The construction method is to place a part of special water, gas nozzle and grouting pipe into the formation at a predetermined depth, cut the formation with coaxial high-pressure water and gas jet, and use the gas to raise and replace the role of the part of the original formation The fine particles are taken out of the formation, followed by the grout filling the voids and the formation of a condensate. This article focuses on the principle of the technology and its application in the construction of Tongzheng Jingzhumiao reservoir reinforcement project.