The Effect of Sedimentation on Hydro-Developmentsby Shou-Shan Fan, Federal Energy Regulatory, Commission, Washington, DC, USA,
Abstract: This paper will discuss two major impacts which are the hydro construction on natural stream sedimentation and the sedimentation related problems during hydro operation. The two types are closely related and interact with each other. The immediate and direct impacts of a hydro development are the modifications of stream hydrology and hydraulics. This, in turn, upsets the balance already established in a natural stream and subsequently create sedimentation related problems in the vicinity of hydro developments. Sometimes, these problems may gradually propagate upsteam and/or downstream far away from the dam. It is assumed that all sediments involved are already in the river and have been brought to the uppermost boundary of the hydro development.
Subject Headings: Sediment | Rivers and streams | Hydrology | Hydro power | Construction management | Hydraulics | Dams | High-rise buildings
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