清远枢纽二线船闸围堰水下绳锯切割技术应用实践  

Application and Practice of Underwater Rope Saw Cutting Technology for Cofferdam of Second Line Shiplock of Qingyuan Project

作　　者：谢志杰 罗锦雄 黄茂兴 陆金伦 XIE Zhijie;LUO Jinxiong;HUANG Maoxing;LU Jinlun(Guangdong Yuantian Engineering Co.,Ltd, Guangzhou 511340, China)

机构地区：[1]广东省源天工程有限公司,广东广州511340

出　　处：《广东水利水电》2020年第8期90-93,共4页Guangdong Water Resources and Hydropower

摘　　要：清远枢纽二线船闸上下游横向围堰结构在船闸主体工程完成施工后,需进行拆除、疏浚航道。该工程采用绳锯切割支架水下定位法对水下围堰结构进行拆除,拆除后的航道无残留块渣、废钢筋,无需二次重复清障,对一线船闸正常运营也无影响,方便快捷,为同类项目施工提供借鉴。The axis of the upstream longitudinal cofferdam of the second line ship lock of a hydro-project is located in the water area of the first line ship lock channel.Before the construction of this section of cofferdam,the construction platform should be filled in the water area.In this regard,the project adopts the extension method to construct the steel trestle plate platform first,and then uses the steel trestle platform to construct the large diameter steel pipe pile in the composite retaining wall structure.Through this combination of measures,the construction of the diaphragm wall can be implemented smoothly,and the adjacent first-line ship locks can continue to operate,which provides a reference for the construction of similar projects.

关 键 词：绳锯切割机 支架水下定位法 拆除 不断航 围堰 

分 类 号：U641[交通运输工程—船舶及航道工程] TV551.3[交通运输工程—船舶与海洋工程]