特殊地质条件下锚碇地下连续墙施工技术

Construction Technology of Diaphragm Wall Under Special Geological Anchorage

宜昌庙嘴长江大桥西坝锚碇位于长江中心岛上,其基础设计采用圆形地下连续墙方案。西坝岛覆盖层较厚,地质情况复杂,对地下连续墙施工影响较大。在卵石加漂石层中施工地下连续墙可借鉴经验不多,如何在此种复杂地质条件下成槽是施工成功的关键。该项目通过采用多种工艺,克服了复杂地质的难题,保证了地下连续墙顺利施工。

Diaphragm wall was adopted in foundation design in some project,and its geological condition is complex. Trench forming is important for construction with less experience of diaphragm wall construction in gravel and erratic boulder layer. This paper introduced the construction technology in the project which solved the problems successfully and ensured the construction smoothly.