Critical interfaces in geosynthetic multilayer liner system of a landfill
This study is to identify the critical interface in a geosynthetic multilayer liner system by examining the effects of the interface shear strength of liner components, leachate level, leachate buildup cases, and peak and residual interface strengths. According to current landfill design procedures,...
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| Format: | Article |
| Language: | English |
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Elsevier
2008-12-01
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| Series: | Water Science and Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674237015300363 |
| _version_ | 1818452484533780480 |
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| author | Qian Xuede |
| author_facet | Qian Xuede |
| author_sort | Qian Xuede |
| collection | DOAJ |
| description | This study is to identify the critical interface in a geosynthetic multilayer liner system by examining the effects of the interface shear strength of liner components, leachate level, leachate buildup cases, and peak and residual interface strengths. According to current landfill design procedures, conducting stability analysis along the same interface at both the back slope and base may result in a non-conservative result. The critical interfaces with the minimum factor of safety are generally found at different locations along the back slope and base. The critical interface for a multilayer liner system cannot simply be assumed during stability analysis. It can shift from one interface to another with changes in the leachate level and with different leachate buildup cases. The factor of safety for an interface with a high friction angle and low apparent cohesion generally drops much more quickly than it does under inverse conditions when the leachate level increases. The failure interface in a liner system under residual conditions is usually different from the failure interface under peak conditions. |
| first_indexed | 2024-12-14T21:23:50Z |
| format | Article |
| id | doaj.art-5a05d60a64734d63bfaf39351e5f122e |
| institution | Directory Open Access Journal |
| issn | 1674-2370 |
| language | English |
| last_indexed | 2024-12-14T21:23:50Z |
| publishDate | 2008-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Science and Engineering |
| spelling | doaj.art-5a05d60a64734d63bfaf39351e5f122e2022-12-21T22:46:51ZengElsevierWater Science and Engineering1674-23702008-12-0114223510.3882/j.issn.1674-2370.2008.04.003Critical interfaces in geosynthetic multilayer liner system of a landfillQian Xuede0Michigan Department of Environmental Quality, Waste and Hazardous Materials Division, Lansing, Michigan 48913, U. S. A.This study is to identify the critical interface in a geosynthetic multilayer liner system by examining the effects of the interface shear strength of liner components, leachate level, leachate buildup cases, and peak and residual interface strengths. According to current landfill design procedures, conducting stability analysis along the same interface at both the back slope and base may result in a non-conservative result. The critical interfaces with the minimum factor of safety are generally found at different locations along the back slope and base. The critical interface for a multilayer liner system cannot simply be assumed during stability analysis. It can shift from one interface to another with changes in the leachate level and with different leachate buildup cases. The factor of safety for an interface with a high friction angle and low apparent cohesion generally drops much more quickly than it does under inverse conditions when the leachate level increases. The failure interface in a liner system under residual conditions is usually different from the failure interface under peak conditions.http://www.sciencedirect.com/science/article/pii/S1674237015300363landfillgeosynthetic multilayer linerfailure interfaceshear strengthleachate levelseepage |
| spellingShingle | Qian Xuede Critical interfaces in geosynthetic multilayer liner system of a landfill Water Science and Engineering landfill geosynthetic multilayer liner failure interface shear strength leachate level seepage |
| title | Critical interfaces in geosynthetic multilayer liner system of a landfill |
| title_full | Critical interfaces in geosynthetic multilayer liner system of a landfill |
| title_fullStr | Critical interfaces in geosynthetic multilayer liner system of a landfill |
| title_full_unstemmed | Critical interfaces in geosynthetic multilayer liner system of a landfill |
| title_short | Critical interfaces in geosynthetic multilayer liner system of a landfill |
| title_sort | critical interfaces in geosynthetic multilayer liner system of a landfill |
| topic | landfill geosynthetic multilayer liner failure interface shear strength leachate level seepage |
| url | http://www.sciencedirect.com/science/article/pii/S1674237015300363 |
| work_keys_str_mv | AT qianxuede criticalinterfacesingeosyntheticmultilayerlinersystemofalandfill |