采用土工膜进行渠道防渗需注意的几个问题

Several Problems Needing Attention for Using Geomembranc to Prevent Seepage of Canal

利用土工膜防渗是目前采用的最广泛的渠道防渗技术,文中从土工膜的老化、土工膜的厚度、土工膜的拼接、土工膜的铺设、过渡层的设置、渠道的冻害防治措施等几方面,提出渠道防渗建设中需要注意的一些问题。

The geomembrane is widely used as an anti-seepage technique for canal at present. The article expounds several problems needing attention in anti-seepage construction of canal from following aspects： aging of geomembrane, its needful thickness, joining, placing, setting of transition layer and the measures to prevent frost damage etc.