Reliability of Compacted Soil Linersby Craig H. Benson, Univ of Texas, United States,
Randall J. Charbeneau, Univ of Texas, United States,
David E. Daniel, Univ of Texas, United States,
Document Type: Proceeding Paper
Part of: Hydraulic Engineering
Determination of transport times of contaminants through a soil liner is hindered by the inherent spatial variability of the hydraulic conductivity of compacted soil. The existence of variability suggests a stochastic analysis to obtain estimates of transport times with associated probabilities of occurrence. This paper presents two different approaches to determine the time at which leachate first appears at the bottom of the liner (first-passage time). The effects of attenuation are ignored; transport of solutes in the leachate is assumed to occur by advection and, with the Chapman-Kolmogorov analysis, diffusion is considered.
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