复杂地质条件下62 m超深TRD止水帷幕关键施工技术

Key Construction Technology of 62-m Ultra-deep TRD Water-stop Curtain under Complex Geological Conditions

近年来,TRD等厚度水泥土搅拌墙施工工艺作为一种基坑围护新技术,应用越来越广泛,但同时遇到的挑战也越来越大,尤其是遇到了复杂地质、超深等情况,该工艺施工难度会大大增加。以南京地区某工地为例,重点介绍了针对62 m超深、穿越砾石层的TRD施工工艺和关键施工技术,为今后类似工程施工提供借鉴。

In recent years,the TRD thickness soil cement mixing wall construction technology as a new technology of foundation pit enclosure is more and more widely applied.But the challenges at the same time are also more and more big,especially in the complex geological and ultra-deep situations.The technology will be much more difficult to construct.Taking a construction site in Nanjing as an example,the 62-m ultra-deep TRD construction technology and key construction technology crossing gravel layer are specially introduced.It can provide the reference for the construction of similar projects in the future.