Khao Laem—A Concrete Face Rockfill Dam on Karst

by Somkuan Watakeekul,
Gordon J. Roberts,
Andrew J. Coles,

Document Type: Proceeding Paper

Part of: Concrete Face Rockfill Dams—Design, Construction, and Performance

Discussion: Beach Anthony R. (See full record)
Discussion: Newberry John (See full record)
Discussion: Snider Steven H. (See full record)
Closure: (See full record)


A continuously reinforced concrete faced rockfill dam has been successfully designed and constructed on a karstic limestone foundation in Central West Thailand. The dam is not in an earthquake prone region but a dynamic analysis nevertheless confirmed the dam to be stable under earthquake loading. The river diversion scheme consisted of a channel for wet season flows and a tunnel for dry season flows. Variable karstic weathering resulted in a more irregular and considerably deeper foundation than expected. Results from extensive instrumentation of the face slab and joints, the rockfill and the foundation both during construction and after impounding, show that the dam is performing in service at least as well as predicted.

Subject Headings: Concrete dams | Dam foundations | Rockfill dams | Rock fills | Earthfill dams | Karst | Foundation design | Foundation construction | Thailand | Asia

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