一种无资料地区山洪灾害临界雨量计算方法研究

发布时间：2018-03-19 14:25

本文选题：临界雨量　切入点：山洪灾害　出处：《中国农村水利水电》2017年01期 　论文类型：期刊论文

【摘要】：临界雨量是预警山洪灾害的关键指标。山洪灾害多发生的无资料地区,其临界雨量的确定一直是防灾减灾中的难点。根据暴雨等值线图确定出的设计暴雨与设计洪水在工程实践中已广泛应用,因此,以设计暴雨与设计洪水资料为基础,率定出水文模型参数,再依据调查确定的成灾流量,计算出该防灾对象的临界雨量。选取二水源新安江与SCS两种水文模型,计算了湖北省宜昌市点军区内30个小流域的临界雨量,计算结果表明:1提出的方法对于无资料地区山洪灾害临界雨量计算具有可行性;2基于二水源新安江模型和SCS模型计算的临界雨量合理且二水源新安江模型优于SCS模型。
[Abstract]:Critical rainfall is the key index for early warning of mountain torrents. The determination of critical rainfall has always been a difficult point in disaster prevention and mitigation. The design rainstorm and design flood determined by the isoline map of rainstorm have been widely used in engineering practice, therefore, based on the data of design rainstorm and design flood, The parameters of the hydrological model are determined, and the critical rainfall of the disaster prevention object is calculated according to the disaster-forming discharge determined by the investigation. Two hydrological models, Xinanjiang River and SCS, are selected. The critical rainfall of 30 small watersheds in the point military region of Yichang, Hubei Province, is calculated. The calculation results show that the proposed method is feasible for the calculation of critical rainfall of mountain torrents in areas without data. The critical rainfall calculated by the Xinan River model and the SCS model based on the two-source Xinanjiang model is reasonable, and the Xinanjiang model with two water sources is superior to the SCS model.
【作者单位】：武汉大学水资源与水电工程科学国家重点实验室;水资源安全保障湖北省协同创新中心;湖北省防汛抗旱指挥部办公室;
【基金】：水利部公益性行业科研专项经费项目(201201051) 全国山洪灾害防治项目(4205042015)
【分类号】：P426.616;TV87

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