Abstract: In an effort to address water shortage in San Diego County, California, the San Diego County Water Authority set out to raise the existing 70-year-old San Vicente Dam from 220 ft (67 m) high to 337 ft (102.7 m) high. The San Vicente Dam is a concrete gravity dam. The scope of work includes quarry design, design construction support, value engineering and cost estimating. Quarry and roller-compacted concrete (RCC) mix testing, foundation excavation and then RCC dam construction were included in the construction phase of the project. The paper introduced the San Vicente Dam raise, for reference.

Key words: San Vicente dam, dam raise, roller compacted concrete, mix proportion, foundation excavation

摘要： 为解决缺水问题，加利福尼亚圣地亚哥县水管局决定对已有70年坝龄的圣文森特大坝进行加高扩容。圣文森特大坝为一混凝土重力坝，工程范围包括采石场设计、设计施工支持、工程经济和成本估算。该工程的施工主要包括料场和碾压混凝土（RCC）配合比试验、基础开挖、混凝土坝施工等。文章对圣文森特大坝的加高扩容工程进行了介绍。

关键词: 圣文森特大坝, 大坝加高, 碾压混凝土, 配合比, 基础开挖