龙滩碾压混凝土重力坝结构设计与施工方法研究

龙滩水电站坝高２１６．５ｍ，坝型定为碾压混凝土（ＲＣＣ）重力坝，方量达３４０万ｍ＾３。在我国南方高气温地区建造世界上最高的ＲＣＣ重力坝，需攻克许多科技难题。本专题针对龙滩水电站枢纽布置、坝体结构进行优化研究，以有利于ＲＣＣ快速施工；对ＲＣＣ筑坝材料特性、渗流和防渗排水结构、坝体的应力与稳定、ＲＣＣ大仓面连续施工、高ＲＣＣ重力坝温控及防裂措施等进行分析研究，取得了科技攻关成果，经鉴定验收，专题成果达

Study on the structural design and construction method of Longtan RCC gravity dam

The dam for Longtan Hydropower Station is a RCC gravity dam with the height of 216 5 m and the volume of 3 40 million m 3 . Because of high temperature in South China, it is necessary to solve many difficult scientific problems in order to construct the highest RCC gravity dam in the world. In accordance with the general layout and dam structure of the Longtan Hydropower Station, the optimization method has been studied in order to reach RCC quick construction. The analysis and study have been made on the following items and the satisfied results have been gained. These items are: the material properties of RCC dam, the seepage flow and the seepage control structures, the stress and stability of dam body, the continuous construction on the large RCC working face, the measures of temperature control and anti cracking of high RCC gravity dam, etc.. The results of this study subject reach the international advanced level and will produce good economic benefits in the construction of high RCC gravity dam for Longtan Hydropower Station.