基于HEC-RAS的施工期围堰溃决洪水模拟研究

发布时间：2018-03-15 04:11

本文选题：围堰　切入点：漫顶溃决　出处：《人民长江》2017年08期 　论文类型：期刊论文

【摘要】：研究溃坝(堰)洪水演进对下游区域的灾害预警和防洪决策等具有重要意义。基于HEC-RAS一维非恒定流水力学模型,考虑不同的入库流量及围堰破坏形式,对某水利工程施工期围堰溃决洪水进行了数值模拟,并分析了各工况下围堰溃口及河道下游的洪水流量过程、洪峰到达时间等。研究成果可为该工程防洪抢险预案的制定提供科学依据,同时可供其他类似工程参考。
[Abstract]:It is very important to study flood routing of dam-break (Weir) for disaster warning and flood control decision in downstream area. Based on HEC-RAS 's one-dimensional unsteady income mechanical model, different inflow and cofferdam failure modes are considered. The numerical simulation of cofferdam burst flood during the construction period of a water conservancy project is carried out, and the flood discharge process of the cofferdam crater and the downstream of the river under various working conditions is analyzed. Hong Feng's arrival time and so on. The research results can provide scientific basis for the formulation of flood prevention and emergency plan for this project, and can be used as reference for other similar projects at the same time.
【作者单位】：长江科学院水力学所;长江航道规划设计研究院Bim中心;
【分类号】：TV122.4

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