... Leachate collection Hydraulic conductivity Hydraulic transmissivity There are many landfills where the liner is overlain by a leachate collection system that consists of a drainage geocomposite overlain by a sand protective layer (Figure 1). It should be noted that only the upper geotextile...

... pressure. Finally, this paper recommends potential application of the hybrid drain system to improve stability of soil structures constructed with poorly draining backfills such as Kanto loam in Japan. Geosynthetics Clogging potential Drain performance factor Hybrid drain Hydraulic transmissivity...

...J.P. Giroud; A. Zhao; G.N. Richardson A new theoretical relationship that quantifies the reduction in hydraulic transmissivity resulting from a reduction in geosynthetic thickness is presented. It is shown that the proposed relationship is in good agreement with experimental data on geotextiles...

...J.P. Giroud; A. Zhao; R. Bonaparte Design engineers often assume that a geosynthetic liquid collection layer and a granular liquid collection layer having the same hydraulic transmissivity are equivalent. In the United States, such equivalency is often mandated by regulations for leachate...