Abstract: As a key project to control, develop and protect the Yangtze River, the Three Gorges project is composed of dam, powerhouse, ship locks and ship lifts. In order to meet the needs of engineering safety and long-term operation, the concrete design is changed from the traditional strength design to the balance between durability and strength, which improves the waterproof performance of concrete. At the same time, a series of new technologies and new materials are adopted to solve many technical problems such as concrete surface protection, seepage treatment, special seepage control of foundation and so on. Each building has good behavior and less seepage flow during operation, and the main monitoring data are within the safe range.

Key words: Three Gorges project, concrete structure, waterproof and protection, technology application

摘要： 三峡工程是治理开发和保护长江的关键性工程，枢纽建筑物由大坝、电站厂房、船闸和升船机组成。为满足工程挡水安全和长期运行的需要，混凝土设计从传统的强度设计转为耐久性与强度并重，提升混凝土自防水性能，同时采用了一系列新技术和新材料，成功解决了混凝土表面防护、结构渗漏处理、特殊基础防渗等诸多技术问题，为工程建设提供了坚实的技术保障，促进了行业发展和科技进步。工程运行后，各建筑物工作性态良好，渗流量较小，主要监测数据均在安全范围之内。

关键词: 三峡工程, 混凝土建筑物, 防水防护, 技术应用