| GRAVEL SLUICING IN ALPINE RUN-OF-RIVER HYDROPOWER PLANTS |
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| 作者姓名： | Helmut SCHEUERLEIN Institut flier Wasserbau Univeristy of Innsbruck Technikerstn . A- Innsbruck Austria. |
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| 作者单位： | Helmut SCHEUERLEIN1 1 Institut flier Wasserbau，Univeristy of Innsbruck，Technikerstn 13. A-6020 Innsbruck，Austria. |
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| 摘 要： | 1 INTRODUCTIONNdsral rivers entering reservoirs carry also sediment, partly as bedload and patly in suspension. At theentrance of the reservoir flow velocity is considerably reduced and the capability of sediment transport isdrashcally fading. Bedload maerial is deposited totally at the reservoir entrance fondng a delta, material...in suspension is cAned further intO the reservoir ulh.. it is partly deposited and partly dischargedthrough the dam towards downstreaxn (depending on the trapp…
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GRAVEL SLUICING IN ALPINE RUN-OF-RIVER HYDROPOWER PLANTS |
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| Helmut SCHEUERLEIN Institut flier Wasserbau,Univeristy of Innsbruck,Technikerstn . A- Innsbruck,Austria..GRAVEL SLUICING IN ALPINE RUN-OF-RIVER HYDROPOWER PLANTS[J].International Journal of Sediment Research,2001,16(2). |
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| Authors: | Helmut SCHEUERLEIN |
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| Abstract: | Deposition of coarse sediment at the entrance of a reservoir is for many reasons an undesired side- effect. Besides loss of storage volume which concerns also fine sediment carried in suspension, the coarser material transported as bedload - particularly the gravel fraction ?is to cause additional effects upstream as well as downstream of the reservoir. Upstream the depositions at the entrance of the reservoir may result in a backup effect at flood events with increasing risk of inundations, and downstream of the reservoir the deficiency of coarse material inevitably results in degradation of the river bed. In the frame of a real hydropower plant (Bad Tolz in Southern Bavaria) the possibility of sluicing coarse material through the reservoir towards downstream has been studied and finally realized. The sluicing process has been coupled with water level drawdown at flood events of appropriate characteristics. The sluicing action was controlled by monitoring and evaluating environmentally significant parameters (sediment concentration, etc.). The results were promising and valuable hints for further actions of this kind could be extracted. |
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| Keywords: | Reservoir sedimentation Bed degradation downstream of dams Sediment management at hydropower plants Gravel sluicing |
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