Historical flood recurrence under the impacts of hydraulic engineering
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Abstract:
With the r apidly economic dev elopment and incr easing o f po pulat ion, a larg e number o f hy dr aulic pr ojects, such as res2 er voirs, levees, floo d sto rage, and flood detentio n, wer e built in the upstream of Fengman Reservo ir o f t he seco nd So ng hua River Basin, w hich changed the natural water flow and had sig nificant impacts on the flo od discharg e and pro cess. In this paper, based on the measured hy dr aulic engineer ing data, the impacts of water conservancy eng ineering on t he flo od w ere analyzed and ap2 plied to simulate histo rical floo d. The r esults show ed that t he qualificatio n r ate o f floo d simulation incr eases from 57% to 86%. The floo d r ecur rence method under the influence o f w ater conserv ancy eng ineer ing operat ion was dev eloped using the TOP2 MODEL model. U nder the condition of curr ent w ater conservancy engineering , t his method was used to simulate the recur rence of histo rical floo d in the upstr eam o f Wudaog ou in the Fengman Reservo ir , w hich showed the compariso n between the histor ical floo d pr ocess and measured pr ocess. The research results can pr ovide r eference fo r the flo od co nt rol in the riv er basin.
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