A Study of Trench Covers to Minimize Infiltration at Waste Disposal Sites. Task 1 Report: Review of Present Practices and Annotated Bibliography.

摘要

Failure of current trench covers in the humid eastern portion of the United States to prevent tritium and other radionuclide migration has prompted research into methods of reducing infiltration by modified trench covers. This report includes a discussion of present practices and a review of the relevant scientific literature. The main types of covers suggested are thicker clay covers of the current design, rigid and nonrigid man-made covers, covers employing clay sealants and covers using the wick effect. The two latter concepts are argued to offer the best long-term solution to the problem with the least maintenance. Optimal designs for clay and the wick effect have been proposed by SCS (1978) and Dragonette et al. (1979).