Hydraulic performance of a composite bottom liner in a municipal solid waste landfill

摘要

A composite liner, about 900 m~2 has been continuously monitored since 1993 thanks to double lining. A measurement protocol used during two years allowed finding relationships between the hydraulic head on top of the composite liner and the resulting flow rates. Various hypotheses were formulated regarding the leachate table position and relationship between measured flow rates and hydraulic heads applied. As a consequence there are various scenarios allowing to explain the obtained values, using modified existing empirical equations, included in this paper. These scenarios are compatible with the results of leak location surveys previously carried out on this site.