Estimation of safety for reservoir flood prevention based on generalized flood hydrograph

YAO Rui-hu , QIN Guang-hua, DING Jing, CAO Ling-ran , LI Pin-liang

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China Rural Water and Hydropower ›› 2018 ›› (1) : 75-80.

Estimation of safety for reservoir flood prevention based on generalized flood hydrograph

  • YAO Rui-hu1 ,QIN Guang-hua1,2 ,DING Jing1,2 ,CAO Ling-ran1 ,LI Pin-liang1
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Abstract

Engineering potential destruction risk caused by flood can be presented by the frequency of annual highest stages in front of engineering (Hm). A quantificational relational expression among annual highest stages,flood peak discharge (x) and flood volume (y) was established, which was based on the condition that flood hydrograph was generalized into triangle. And then, based on stochastic simulation method, the annual highest stages (Hm)N were calculated according with flood prevention standard. Therewith, the combinations of flood peak discharge and flood volume are analysed at the request of satisfying the standard. Result has shown that its calculation was above the flood prevention standard on the condition of the combination that flood peak discharge and flood volume are same frequency, in addition, The variation of engineering’s characters of flood prevention have impact on Hm, which above can be demonstrated.

Key words

flood prevention standard / generalized flood hydrograph / stochastic simulation / combination of flood peak discharge ( x) and flood volume ( y)

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YAO Rui-hu , QIN Guang-hua, DING Jing, CAO Ling-ran , LI Pin-liang. Estimation of safety for reservoir flood prevention based on generalized flood hydrograph. China Rural Water and Hydropower. 2018, 0(1): 75-80

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