聚脲涂层在混凝土面板堆石坝表层接缝止水中的应用

The Application of Polyurea Material Coating in the Water-stop of Surface Joints of a Concrete Faced Rockfill Dam

混凝土面板是在堆石坝体上游面起防渗作用的混凝土结构,而面板混凝土防渗的关键是面板表层的接缝止水。文中以板涧河大坝为例,介绍了面板表层接缝止水设计方案、施工工艺,重点从必要性和性能方面突出了聚脲、胎基布柔性复合止水涂层这种新技术在面板表层止水中的应用。

The concrete slab is a concrete structure that plays a very important role in seepage prevention on the upstream face of CFRD,the key to prevent seepage of the concrete slab is joint sealing of the surface layer. Taking Banjianhe Dam as an example, design and construction technology of the surface water-stop joints of the slab are introduced. Emphasis on the necessity and performance highlights the application of the new technology of polyurea and fetal base fabric flexible composite water-stop coating in the surface slab water-stop.