复合土工膜在南水北调干渠的应用

Application of composite geomembrane in main canal of South-to-North water transfer project

针对辽宁盘山县特有的透水地基和粉砂质土堤,工程设计采用复合土工膜技术,不仅提高了渠道的抗冲刷能力,又降低土堤侵润线和逸出点。避免下游出现翻砂,管涌现象,减少土堤占地面积,并增加土堤的稳定性。

According to endemic permeability foundation and silt earth dike in Panshan County of Liaoning province,the project design adopts composite geomembrane technique,not only increase anti-scour capacity of channel,but also decrease infiltrating line and egress point for earth dike,.which could avoid the rolling sand and piping of lower reaches,reduce the site area of soil dike and increase soil dike stability.