Stability Analysis Against Slide Of The Geomembrane Anti-seepage Structure On Side Slope Of The Western-extending Trunk Canal In The “500” Reservoir Intake Area

In recent years, the significant progress has been achieved in the area of the geomembrane anti-seepage techniques in China. Different advanced composite materials have been developed and utilized in hydraulic structures. However, the actual applications of the geomembrane are still limited by a series of technical difficulties. For example, without consistent standard and methodologies, it is hard to get the reliable data or conclusions from different studies on the analysis of the interface friction between geomembrane, polyethylene cover and soil materials, which will significantly affect the stability of the anti-seepage side slope.In this study, based on the practical data from the recent project of the “western-extending trunk canal in the ‘500’ reservoir intake area”, the friction angle and cohesion force between canal bed foundation soil material, bedding material, polyethylene cover, composite geomembrane and mortar materials were analyzed under different conditions. In addition, the study also reviewed the relative experimental data based on “Yin-E-JiKe-JiWu diversion works” in the north of Xin Jiang province. Therefore, the study will provide the valuable reference basis for the future design on the “western-extending trunk canal in the ‘500’ reservoir intake area” and stability analysis on other channel slope projects.