Reservoir Sedimentation and Desilting in Taiwan

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by Chian Min Wu, (A.M.ASCE), Ministry of Economic Affairs, Taipei, Taiwan, Ministry of Economic Affairs, Taipei, Taiwan,

Document Type: Proceeding Paper

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

Abstract: The island of Taiwan is infested with numerous flashy streams with steep slopes and huge sediment loads, thus, the major reservoirs have experienced heavy sediment deposit. The encroachment on the live storage capacity is often found to be of a serious magnitude, and several reservoirs have been even declared to be abandoned. Recently, however, two control measures, sluicing by desilting tunnel at Gen-Shan-Pei Reservoir and evacuation of sediment by dredging at Shihmen Reservoir have demonstrated to have sufficient economic value. Both of them show the successful applications of hyper-concentrated flow for reservoir desilting either by gravity or mechanical means.

Subject Headings: Sediment | Reservoirs | Sediment transport | Water flow | Tunnels | Dredging | Islands | Rivers and streams | Taiwan | Asia

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