Composite landfill liner design with Ankara clay, Turkey
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- 作者：陌. Met and H. Akg眉n
- 关键词：Ankara clay ; Composite liner ; Compacted clay ; HDPE geomembrane ; Expected leakage rate ; Turkey
- 刊名：Environmental Geology
- 出版时间：April 2005
- 出版年：2005
- 期刊代码：40_0943-0105
- 类别：ear
- 卷：47
- 期：6
- 页码：795-803
- 数据来源：sp
摘要
This study presents an overview of the geotechnical properties of the clayey soils, referred to as Ankara clay, at two sites of the Ankara region in an attempt to design a landfill profile composed of a high density polyethylene (HDPE) geomembrane/clay composite liner through the Hydrologic Evaluation of Landfill Performance (HELP) model and the Water Balance Method. The geotechnical properties of the landfill layers along with the water balance factors (i.e., evapotranspiration, precipitation, temperature, etc.) were assessed to determine the height of the water-saturated zone in the refuse above the composite liner for landfill design. The cumulative expected leakage rates through the composite liner constructed with compacted Ankara clay were related quantitatively to the cumulative average leachate head. The results of this investigation show that the leakage rates through the composite liner are within tolerable limits.