... to help determine which configuration is preferable. The comparative study consists of comparing the rate of leachate migration through two double liner systems having the following inverse configurations: (i) a double liner system where the primary liner is a geomembrane liner and the secondary liner...

...J.P. Giroud; N.S. Rad; J.A. McKelvey When a geosynthetic clay liner (GCL) is used in a composite liner, the bentonite of the GCL may be hydrated by moisture from the underlying medium and by leachate migrating through defects in the overlying geomembrane. When hydration caused by the underlying...

... example is given. 30 12 1996 21 3 1997 Industrial Fabrics Association International, 1801 County Road B West, Roseville, Minnesota 55113-4061, USA, Telephone: 1/612-222-2508, Telefax: 1/612-631-9334 1997 geosynthetics Liquid migration Leachate migration Leakage Composite liner...

.... holes in geomembrane liners). It is shown that leachate flows in a zone of the leakage collection layer (the wetted zone) that is limited by a parabola. A simple relationship is established between the rate of leachate migration through the defect and the maximum thickness of leachate in the leakage...

...J.P. Giroud; M.V. Khire; J.A. McKelvey The leakage collection layer located beneath a geomembrane liner in a landfill may not have enough flow capacity to convey the leachate migrating through a geomembrane defect without becoming filled with leachate in a certain area around the defect...