Regenerative Energie
Clay geosynthetic barriers, also known as geosynthetic clay liners (GCL), are often used as elements of landfill cover systems instead of compacted clay liners which are favoured by the technical regulations of the EC and of Germany. As a contribution to the verification of the performance of GCL in landfill applications a lysimeter field study was conducted on a landfill in Bavaria.
The large lysimeter, 520 m² in size, allows collection and continuous measurement of surface runoff on the topsoil, drainage flow in the geocomposite and leakage flow through the GCL. In addition soil moisture measurements are carried out in the restoration profile and in the GCL. The relevant meteorological data are measured continuously. Results of the monitoring period from 1998 to 2002 are presented here. The test site is characterised by cool temperate, humid conditions with average annual precipitation of approx. 750 mm. Approximately 2/3 of the total precipitation were returned to the atmosphere as evapo-transpiration. Some 30% were drainage flow in the geocomposite and only about 1% of the precipitation resulted in leakage flow through the GCL. Thus the landfill cover system including a calcium-GCL proved to be an effective landfill cover system within the observation period.
| Copyright: | © LGA Bautechnik GmbH |
| Quelle: | Fachtagungen (Februar 2004) |
| Seiten: | 6 |
| Preis: | € 0,00 |
| Autor: | Dr. Wolf Ulrich Henken-Mellies H. Zanzinger |
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© Lexxion Verlagsgesellschaft mbH (6/2025)
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© Lexxion Verlagsgesellschaft mbH (6/2025)
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© Springer Vieweg | Springer Fachmedien Wiesbaden GmbH (5/2025)
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