大断面暗挖隧道软弱围岩 CRD 法施工

摘要

结合新建铁路温福线周仓岭隧道的施工案例，介绍了大断面暗挖隧道穿越软弱土层的施工工艺，并从掘进、支护、围岩量测等方面阐述了采用CRD法施工的优越性，为该工法的推广应用提供了技术支撑。%Combining with Zhoucangling tunnel construction along Wenzhou-Fuzhou newly-built railway,the paper introduces the construction craft of the large-section underground excavation tunnel through weak soil layer and illustrates the advantages of the CRD method construction from the jacking,supporting,and measurement of surrounding rock,so as to provide some technical support for the extensive application for the construction method.