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沥青混凝土具有很好的防渗性,近乎绝对的不透水,同时又具有极佳的柔形变形特征和自愈闭合功能。因而,其最适宜作为位于软弱岩层、深厚覆盖层、高寒冻土及高地震烈度等地区的土石坝的防渗体。另外,由于沥青混凝土防渗结构形体简单,厚度较薄,工程量小,施工速度快,在坝工建设中越来越受到重视。本文介绍了该水利枢纽工程主坝沥青混凝土心墙的现场施工方法,对于中小型工程沥青混凝土防渗墙施工具有一定的参考价值。
Asphalt concrete has good impermeability, almost impervious, but also has excellent flexibility and deformation characteristics of self-healing closure function. Therefore, it is most suitable as a seepage prevention body for earth-rock dams located in soft rock formations, deep overburden, alpine frozen soil and high earthquake intensity areas. In addition, due to the simple structure of asphalt concrete seepage control structure, the thickness is thin, the project is small, the construction speed, more and more attention in dam construction. This paper introduces the on-site construction method of the main dam asphalt concrete core wall of the water control project, which is of certain reference value for the construction of medium and small-sized asphalt concrete impervious walls.