Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Physical and Numerical Modeling of an Earthen Three-Layer Landfill Cover System under One-Dimensional Infiltration
One of the main purposes of a landfill cover system is to reduce rainfall infiltration into the waste and hence reduce leachate generation. The use of a two-layer cover with capillary barrier effects (CCBE) can achieve this purpose. However, due to its working principle, CCBEs can lose its effectiveness in minimizing water infiltration into the waste under humid climates or prolonged rainfalls. To address this issue, a three-layer landfill cover system is proposed. This cover system is to add a clay layer underneath a CCBE. The performance of this three-layer landfill cover was investigated through a one-dimensional soil column laboratory experiment installed with tensiometers and moisture probes. One-dimensional numerical seepage analysis was also performed to simulate the laboratory water infiltration test. Both experimental investigation and numerical simulation showed that the three-layer landfill cover system is a promising alternative landfill cover system for humid climates.
Physical and Numerical Modeling of an Earthen Three-Layer Landfill Cover System under One-Dimensional Infiltration
One of the main purposes of a landfill cover system is to reduce rainfall infiltration into the waste and hence reduce leachate generation. The use of a two-layer cover with capillary barrier effects (CCBE) can achieve this purpose. However, due to its working principle, CCBEs can lose its effectiveness in minimizing water infiltration into the waste under humid climates or prolonged rainfalls. To address this issue, a three-layer landfill cover system is proposed. This cover system is to add a clay layer underneath a CCBE. The performance of this three-layer landfill cover was investigated through a one-dimensional soil column laboratory experiment installed with tensiometers and moisture probes. One-dimensional numerical seepage analysis was also performed to simulate the laboratory water infiltration test. Both experimental investigation and numerical simulation showed that the three-layer landfill cover system is a promising alternative landfill cover system for humid climates.
Physical and Numerical Modeling of an Earthen Three-Layer Landfill Cover System under One-Dimensional Infiltration
Coo, Jason L. (Autor:in) / So, Zac P. S. (Autor:in) / Ng, Charles W. W. (Autor:in)
Second Pan-American Conference on Unsaturated Soils ; 2017 ; Dallas, Texas
PanAm Unsaturated Soils 2017 ; 247-257
20.06.2018
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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