浅薄覆盖层墙幕结合防渗技术

Wall and Curtain Combination Anti-seepage Technology on Shallow and Thin Covering Layer

介绍一种适合于浅薄覆盖层防渗的墙幕结合施工方法。施工中幕体上部首次采用了连锁椭圆形倒挂井防渗墙,下部采用灌浆方式形成帷幕。具有施工工效高、防渗性能可靠、工程投资小等特点,已成功地应用于滦河电厂凡西营灰场高68m的灰坝坝基抗渗帷幕的设计及施工中。

In this article, authors introduce a wall and curtain combination construction method, which is proper for shallow and thin covering layers. In construction, engineers firstly adopted linked elliptic reversehangingwell antiseepage wall on the top of the curtain, and grouted at bottom to form the curtain. This construction method has many features such as high construction efficiency, good antiseepage performance, and low construction cost and so forth, and has been applied successfully in the design and construction of the antiseepage curtain of dam base of the 68m high ashdam of Fanxiying Ashfield of Luanhe Power Factory.