碾压砼坝的沥青混合料防渗结构的探讨

Discussion on Asphalt Mixture Impervious Structure for Rolling Concrete Dam

碾压砼筑坝近年来已有了很大发展 ,但其防渗结构方面仍存在问题。本文在分析了各类碾压砼坝防渗结构特点的基础上 ,着重论述了沥青混合料防渗结构在砼坝中的应用。工程实践证明 ,沥青混合料防渗结构具有防渗效果好 ,适应变形能力强 ,施工速度快 ,与碾压砼施工干扰小等特点 。

In recent years, there has been a big advancement in the rolling concrete dam construction, but there still exist some problems in the impervious structure. Based on the analysis of behaviors of impervious structures of rolling concrete dam of various types, this paper mainly deals with the application of asphalt mixture impervious structures in concrete dams. It is proved through engineering practice that asphalt mixture impervious structure is characterized by good impervious effect,strong adaptability to dam deformation, being fast in construction and small interference with rolling concrete dam construction,so that it is a kind of impervious structure model with bright future.