复杂富水地质条件下超深地下连续墙施工技术

CONSTRUCTION TECHNOLOGY FOR ULTRA-DEEP UNDERGROUND DIAPHRAGM WALLS IN COMPLEX WATER-RICH GEOLOGICAL CONDITIONS

基于天津某交通枢纽工程,对超深地下连续墙在复杂富水地质情况下的施工技术进行分析研究。重点阐述了地下连续墙成槽方法、垂直度控制措施、防槽壁坍塌措施、接头处理措施及钢筋笼吊装方法。结果表明,本工程采用的超深地下连续墙施工技术能有效保证成墙质量,适用于天津市复杂富水地质条件下的超深地下连续墙施工。

Based on a transportation hub project in Tianjin,the construction technology of ultradeep underground diaphragm walls in complex water-rich geological conditions is analyzed and studied.The focus is on the method of forming the underground diaphragm wall,verticality control measures,measures to prevent collapse of the wall,joint handling measures and reinforcement cage hoisting methods.The results show that the ultra-deep underground diaphragm wall construction technology adopted in this project can effectively guarantee the quality of the completed wall and is suitable for the construction of ultra-deep underground diaphragm walls in complex water-rich geological conditions in Tianjin.