小浪底大坝的设计特点及施工新技术

Design Characteristics and New Construction Technologies of Xiaolangdi Dam

小浪底大坝防渗措施的选择是大坝设计的核心,反滤设计是保证防渗安全和有效的关键。大坝的斜心墙与混凝土防渗墙作为坝基防渗的第一道防线,上游围堰下游坡设置的上爬式内铺盖与坝前淤积形成的天然铺盖相连,作为坝基防渗的第二道防线,充分体现了利用黄河多泥沙特点的设计思想。大坝防渗墙工程施工中大量采用新技术、新方法,设计和施工均代表了当代碾压土石坝的发展水平。

The selection of anti-seepage measures of Xiaolangdi Dam is the core of the dam design. Filter design is the key to ensure the effectiveness and safety of seepage control. The sloping core and concrete impervious core of the dam is the first defense line of dam foundation seepage treatment. The uprush inner blanket set in the downstream slope of the upper stream cofferdam joins with natural blanket by sedimentation in front of the dam and forms the second line of defense, which fully indicates the design utilizing sand and mud of the Yellow River. A lot of new technologies and methods have been adopted during the construction of anti-seepage wall. Both design and construction of the dam present the development of modem rolled earth-stone dam.