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A Proposed Desilting Reservoir System in Taiwan

by Jing-San Hwang, Taiwan Provincial Water Conservancy, Bur, Taichung City, Taiwan,



Document Type: Proceeding Paper

Part of: Water Forum '86: World Water Issues in Evolution

Abstract:

The paper discusses the design of a desilting system for Nanhwa reservoir, in which the reservoir is divided into two bays; water flows into the forebay for sedimentation and then over flows into the afterbay for storage and operation. The sediments carried by the inflow water will nearly all deposit in the forebay to be removed by periodic flushing. According to the flow routing, including water and sediment, the trap efficiency can be predicted and the forebay of the Nanhwa reservoir will function as a settling basin and will contain almost no permanent sediments. This paper presents the planning and current status of the project; physical and economical evaluations are included.

Subject Headings: Reservoirs | Sediment | Water flow | Flushing | Fluid flow | Water storage | Sediment transport | Taiwan | Asia

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