Flood Routing in River-Reservoir System:Research Advances and Existing Problems

LU Yun-feng

doi:10.11988/ckyyb.20190864

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Journal of Changjiang River Scientific Research Institute ›› 2019, Vol. 36 ›› Issue (10) : 122-126. DOI: 10.11988/ckyyb.20190864

SAFE OPERATION ,MONITORING AND EARLY WARNING OF DYKE ENGINEERING

Flood Routing in River-Reservoir System:Research Advances and Existing Problems

LU Yun-feng

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Abstract

In the scheduling of river-type reservoir, the impact of inflow flood, artificial regulation, and river basin topography on the flood routing process should be considered. By summarizing the research findings of flood wave features and dynamic reservoir capacity, we made it clear that the scheduling of river-type reservoir should be accomplished by coupling hydrologic and hydrodynamic models, and meanwhile that attention should be paid to the disturbance of artificial scheduling on the stage-discharge relation at dam site. We summarized that the effect of water flow structure on riverbed roughness should be taken into consideration in the calculation of reservoir flood routing. Furthermore, we reviewed the research achievements up to now of the flow characteristics near dam and pointed out that the three-dimensional flow characteristics near dam are remarkable. Taking the cross-section near dam as the boundary condition may cause systematic errors in calculation. In order to improve the accuracy of flood routing model, in future we should conduct in-depth research on the influence of manual regulation on the conveyance capacity of the cross-section near dam and roughness calibration.

Key words

river-reservoir system / flood wave / dynamic storage / flood regulation method / roughness / flow characteristics near dam / flood routing

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LU Yun-feng. Flood Routing in River-Reservoir System:Research Advances and Existing Problems[J]. Journal of Changjiang River Scientific Research Institute. 2019, 36(10): 122-126 https://doi.org/10.11988/ckyyb.20190864

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