General Design and Construction Considerations for Remedial Seepage Control

by Edward B. Perry, U.S. Army Engineer Waterways, Experiment Station, Vicksburg, United States,



Document Type: Proceeding Paper

Part of: Geotechnical Practice in Dam Rehabilitation

Abstract:

All earth and rock-fill dams are subject to seepage through the embankment, foundation and abutments. Methods for remedial seepage control include storage restriction, grouting, upstream impervious blanket, downstream berm, slurry trench cutoff, relief wells, toe drains and drainage of the downstream slope. The remedial designer, while possibly having more advanced technology available than the original designer, must work with existing conditions. Recent advances in remedial seepage control include the development of microcomputer programs to analyze remedial seepage problems and conduct parametric studies including cost analysis, construction of bio-polymer drains and development of an expert system containing diagnostic capabilities for seepage analysis and control.

Subject Headings: Seepage | Drainage wells | Computer analysis | Embankment dams | Computer aided design | Structural control | Rockfill dams

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