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随着我国社会经济的高速发展,社会对交通运输量的需求也越来越大,隧道工程施工也随之大幅度增多。在隧道工程施工过程中,预支护与预加固措施在施工中发挥着极其重要的作用,而双层超前小导管施工技术作为一种超前预支护技术,在隧道施工工程中得到了广泛的运用。本文介绍了几例实际运用超前小导管施工技术的工程,简要分析了双层超前小导管施工技术在引水隧道中的应用原理,对其在引水隧道实际施工中得施工措施进行了大体概述,并着重探究分析了应用双层超前小导管施工技术的具体措施和技术,以供相关人士参考借鉴,希望能够对双层超前小导管施工技术在引水隧道中的应用起到一定的指导作用。
With the rapid socio-economic development in our country, the demand for traffic volume in the society is also growing, and the construction of tunnels also increases substantially. In the process of tunnel construction, pre-support and pre-reinforcement measures play an extremely important role in the construction. As a kind of advanced pre-support technology, double-layer advance small conduit construction technology has been widely used in tunnel construction. This article introduces some projects that actually use the advanced small duct construction technology, briefly analyzes the application principle of the double-layer advance small duct construction technology in the diversion tunnel, and gives a general overview of the construction measures taken in the actual construction of the diversion tunnel. This paper focuses on the analysis and analysis of the specific measures and techniques of applying double-layer construction of small-diameter pipelines for reference by relevant parties, hoping to play a guiding role in the application of double-layer leading small pipe construction technology in diversion tunnels.