一次性导向跟管钻进法大管棚施工技术在管廊施工中的应用研究

Research on the Application of the Construction Technology of Large Pipe Shack in the Construction of Pipe Gallery by One-time Guided Pipe Drilling

本文通过对桃园路管廊隧道的工程特点、水文地质情况进行分析,决定采用"一次性导向跟管钻进法"施工大管棚,对隧道前方土体进行超前支护,确保管廊隧道地层安全可靠,并进一步阐述了长80 m的大管棚在富水砂层中采用"一次性导向跟管钻进法"施工工艺流程及关键技术要点,为日后类似地层条件的施工提供宝贵的经验及相关技术支持。

Based on the analysis of the engineering characteristics and hydrogeology of the tunnel of Taoyuan road, it was decided to use the "one-time guided pipe drilling method" to construct a large pipe shed to provide advance soil support in front of the tunnel so as to ensure the safety and reliability of tunnel strata reinforcement. This paper further expounds the construction process and key technical points of 80 m long pipe shed in the water-rich sand layer using the "one-time guided pipe drilling method". It provides valuable experience and relevant technical support for the construction of the corresponding strata conditions in the future.