软弱围岩接触带高压大涌水隧道开挖技术研究

On the Excavation Technology of the Tunnel of Large Water Burst in High Pressure in the Contact Zone of Weak Surrounding Rock

软弱围岩接触带地下水复杂、拱顶易坍塌、边墙易收敛、围岩变形大、监控量测难。为了解决这些问题,保证安全施工,对围岩接触带高压大涌水隧道开挖支护施工技术进行研究,并将其应用在实际施工中,不仅保证了施工质量和工期,圆满完成了施工任务,而且有一项专利技术已授权,对同类工程施工具有借鉴意义,也具有广泛的推广应用价值。

There are many problems in the contact zone of weak surrounding rock, such as complex underground water, vault collapse, side wall constriction, surrounding rock deformation, and difficulty in monitoring and measurement. In order to solve these problems and unsure construction safety, this article studies the exaction and support technology in the tunnel of large water burst in high pressure in the contact zone of weak surrounding rock and applies it to practical construction. Thus the construction quality is ensured and the project is completed in time, so the construction task is successfully completed. Besides, a patented technology has been authorized, which can provide reference for similar projects and is also of wide promotion value.