高寒地区碾压混凝土筑坝技术在龙首水电站的应用

Application of high RCC dam construction technology in frigid region to Longshou Hydropower Station

国家电力公司重点科技攻关课题《高寒地区碾压混凝土筑坝技术研究》 ,以龙首水电站为依托工程之一 ,结合龙首水电站工程高寒、高温、高地震、高蒸发的气候、地质特点 ,采用了拱坝、重力坝、推力墩结合的“三接头”的布置形式 ,在节省投资、保证质量的前提下 ,对本地筑坝材料进行技术改造和试验研究 ,取得了较好的效果。目前 ,该坝成为国内外已建成的最高、最薄的双曲碾压混凝土拱坝 。

The study on RCC dam construction technology in frigid region, as one of the key scientific and technical problems of the National Power Corporation, takes the Longshou Hydropower Station as one of its reference projects. In the combination of the climatic and geological characteristics of the site with extremely cool, high temperature, active earthquake and high evaporation, the Longshou Hydropower Project adopts the layout of the composite type of arch dam, gravity dam and thrust pier. On the conditions of saving investment and guaranteeing quality, the local construction materials have been tested, studied and improved technically. Many good results have been gained. At present, the Longshou dam is the highest and thinnest completed RCC dam at home and abroad and its water impounding level is up to its normal pool level.