Resource
Design of Fill Dams Including a Geomembrane
Paper on file with ASDSO.
Although a geomembrane easily fits to complicated shapes, it was noted that dams including a geomembrane have simple structures : constant slope, no berm, rectilinear axis. The membrane supporting structure fulfills different mechanical and hydraulic functions as far as rockfills are concerned the transition is firstly a granulometric one. However, the supporting layer is stabilized through impregnated gravel, bituminous concrete ... etc ...
A special emphasis is laid on both the local (under the geomembrane) and general (through the fill) drainage systems. The general principles of mechanics are applied to the design of connections with both the foundations and the crest. But, some examples drawn from the available dams show that the selected designs are sophisticated.
Laboratory tests were carried out to analyze the lining stability together with its protection.
Other uses but less widespread of geomembranes in fill dams are described.
