软弱地质下沉管隧道暗埋段地下连续墙成槽技术

Research on the Underground Continuous Wall Trench Technology of Immersed Tube Tunnel Buried Section in Weak Geological Condition

天津市滨海新区中央大道海河隧道工程,位于天津市塘沽,处于华北地区高震带上,地质属于滨海相沉积为主的软土类。在软弱地质条件下,通过采用沉管隧道暗埋段围护结构地下连续墙施工技术,解决了软弱地质条件、高承压水位下地下连续墙施工成槽稳定性问题,防止地下连续墙成槽塌方事故发生。

The Haihe River Tunnel project of Tianjin Binhai New Area Central Avenue, is located in Tanggu, Tianjin, the high earthquake belt in North China, categorized geologically as the coastal deposit soft soil. Based on the weak geological conditions, the immersed tube tunnel buried underground enclosure structure of continuous wall construction technology is adopted, which solves problem of weak geological conditions, underground continuous wall trench instability caused by high pressure water level, and prevent the groove collapse of underground continuous wall.