沥青混凝土防渗面板与黏土铺盖之间接触渗透性能的试验研究

Tests on interfacial seepage between asphalt concrete facing and soil blanket

结合宝泉工程进行了沥青混凝土面板与黏土铺盖之间接触渗透性能的研究。通过试验得到了不同界面连接形式和土体有无界面滑动情况下的临界渗透坡降和破坏渗透坡降,并依此对工程的接触渗漏安全性进行了评价。研究表明,对于界面设置网格加强形式,应防止土体相对于网格的滑动,避免将网格粘贴在沥青混凝土面板上。

In view of the interfacial seepage between asphalt concrete facing and soil blanket of Baoquan Pumped Storage Project in China, experiments were made to investigate the interfacial seepage characteristics. The critical and the failure hydraulic gradients were obtained for different interfacial structures with and without sliding of the soil. Safety evaluations were made for the interfacial seepage of the project. For the interface structure strengthened by the fiberglass mesh, conclusions were drawn from the test results that the soil sliding relative to the mesh should be avoided, and the method of sticking the mesh directly up to the asphalt concrete surface was not suitable.