斯里兰卡汉班托塔港一期工程围堰混凝土防渗墙施工技术

斯里兰卡汉班托塔港一期工程围堰总长4212m,整个围堰垂直防渗采用塑性混凝土防渗墙的止水型式。在北围堰段淤泥层较厚区域采用下设钢筋网片的刚性混凝土结构,防渗面积约5万m2。施工中成功地解决了临海较厚纯砂层和淤泥层的成槽稳定问题。本文主要介绍防渗墙的施工方法和具有创造性的技术特点。

Construction Technique of Concrete Cutoff Wall for the Weir of First-stage Hambantota Port in Sri Lanka

The total length of the weir of first-stage Hambantota Port is 4212m,the vertical cutoff of the weir adopts plastic concrete cutoff wall.Reinforced concrete cutoff wall is used in the northern weir where there is a relatively thick layer of silt,the total area of the cutoff wall is about 50000 m2.During the construction of the cutoff wall,the difficulty of stabilizing the walls of the trench was successfully solved in the relatively thick sand layer and the silty layer adjacent to the sea.This article dedicates to introduce the construction method of cutoff wall and the creative technique features of the project.