Construction and performance of a long-term earthen liner experiment
By: Keros Cartwright and Ivan G. Krapac
Edited by: Rudolph Bonaparte
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Abstract
In land burial schemes, compacted soil barriers with low hydraulic conductivity are commonly used in cover and liner systems to control the movement of liquids and prevent groundwater contamination. An experimental liner measuring 8 x 15 x 0.9 m was constructed with design criteria and equipment to simulate construction of soil liners built at waste disposal facilities. The surface of the liner was flooded with a 29.5 cm deep pond on April 12, 1988. Infiltration of water into the liner has been monitored for two years using 4 large-ring (1.5 m OD) and 32 small-ring (0.28 m OD) infiltrometers, and a water-balance that accounts for total infiltration and evaporation. Average long-term infiltration fluxes based on two years of monitoring are 5.8 x 10-9 cm/s, 6.0 x 10-8 cm/s and 5.6 x 10-8 for the large-ring, small-ring, and water-balance data, respectively. The saturated hydraulic conductivity of the liner based on small-ring data, estimated using Darcy's Law and the Green-Ampt Approximation, is 3 x 10-8 and 4 x 10-8 cm/s, respectively. All sets of data indicate that the liner's performance exceed that which is required by the U.S. EPA.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Construction and performance of a long-term earthen liner experiment |
| Issue | 26 |
| Year Published | 1990 |
| Language | English |
| Publisher | Publ by ASCE |
| Publisher location | New York, NY, United States |
| Larger Work Title | Geotechnical Special Publication |
| First page | 135 |
| Last page | 155 |
| Conference Title | Proceedings of a Symposium on Waste Containment Systems: Construction, Regulation, and Performance |
| Conference Location | San Francisco, CA, USA |
| Conference Date | 6 November 1990 through 7 November 1990 |
| Google Analytic Metrics | Metrics page |