天荒坪电站上水库沥青混凝土防渗护面设计

Design of asphalt concrete impervious facing in the upper reservoir of Tianhuangping Pumped storage Power Station

沥青混凝土具有防渗性能好、柔性好、适应变形能力强的特点，能适应基础条件较差和较复杂的地区。天荒坪上水库是我国第一个全库采用沥青混凝土护面防渗的工程，其沥青混凝土面板采用简式结构，由整平胶结层、防渗层、封闭层组成；面板底部加设排水系统。施工过程中，对原材料、结构设计、施工工艺等进行了较深入的研究，并采用了先进的施工和检测设备，保证了施工质量的稳定。

The asphalt concrete has the characteristics of good impervious performances, flexibility and strong adaptability to deformation, which could suitable to the poor foundation conditions and more complicated region The Tianhuangping reservoir is the first reservoir with all reservoir asphalt concrete impervious facing in China A simple type structure is adopted in the asphalt concrete facing slab This structure is composed of leveling bonded layer, impervious layer and closed layer The drainage system is arranged under the face slab In the construction, the raw material, structure design and construction techniques have been deeply studied, and the advanced construction and detection equipment have been adopted so that the quality of the construction has been guaranteed