华电曹妃甸码头地下连续墙施工关键技术

华电曹妃甸重工装备制造基地一期项目码头工程，采用地下连续墙作为板桩码头前沿主体结构。曹妃甸地区是新近吹填地貌，地质为粉细砂、粉砂层，临海近，地下连续墙施工受潮差影响大，具有成槽难度大、易塌孔、护壁要求高等特点。主要论述华电曹妃甸码头工程地下连续墙施工的关键设备、槽段划分和接头形式选择、地基处理、导墙设计、工程泥浆及配合比、成槽检测、钢筋笼吊放、混凝土灌注、接头管施工等关键施工技术和工艺流程，以及一些技术要点的控制办法，保证了工程质量，对同类工程施工具有参考价值。

Key technology for diaphragm wall of Huadian Caofeidian quay

The first phase of terminal project of Huadian Caofeidian Heavy Equipment Manufacturing Base adopts the diaphragm wall as the main structure of the sheet-pile quay, which is rare in China. Caofeidian area is a newly filling landscape near the sea, with the geology of fine sand and silty sand. The construction of the diaphragm wall is influenced by the tide and construction of the trough is difficult of, the hole is easily to collapse, and the requirement to the wall is strict. This article focuses on the key equipment of Huadian Caofeidian quay project, slot division and joint type selection, foundation treatment, guide wall design, mud and mix engineering, trough detection, hoisting of steel cage, concrete pouring, pipe joints, etc., as well as the control methods for some key technologies, which can ensure the quality of the project and may serve as a reference for similar projects.