平原湖区排涝模数计算方法的比较研究

发布时间：2018-01-13 00:29

本文关键词：平原湖区排涝模数计算方法的比较研究　出处：《中国农村水利水电》2016年12期 　论文类型：期刊论文

【摘要】：开展排涝计算方法研究对于合理确定平原湖区的排涝系统规模和有效控制涝灾损失具有重要的现实意义。在对现状排涝计算方法进行系统论述的基础上,选取湖北省四湖流域的螺山排区作为研究区,对平原湖区4种常用排涝模数计算方法(平均排除法、经验公式法、水量平衡法和河网水力学模型法)进行了定量比较,并对排涝计算方法的选取进行了探讨。结果表明:平均排除法、经验公式法、水量平衡法和河网水力学模型法均适用于螺山排区排涝计算。综合考虑到保护对象特点和近期极端天气概率增加等因素,1日暴雨和3日暴雨时,分别选用水量平衡法和经验公式法计算排涝模数偏于安全。研究成果可为平原湖区排涝模数计算方法的合理选取提供参考。
[Abstract]:The study of drainage calculation method is of great practical significance for rationally determining the scale of drainage system and effectively controlling waterlogging loss in plain lake area. The Luoshan drainage area of four lakes in Hubei Province is selected as the study area, and four commonly used calculation methods of drainage modulus (average exclusion method, empirical formula method) are used in plain lake area. The quantitative comparison between the water balance method and the river network hydraulics model method is carried out, and the selection of the calculation method of drainage is discussed. The results show that the average exclusion method and the empirical formula method are used. Both the water balance method and the river network hydrodynamic model method can be used to calculate the drainage of waterlogging in Luoshan drainage area. Considering the characteristics of the protected objects and the increasing probability of extreme weather in the near future, the rainstorm of 1st and 3rd is considered. The calculation of drainage modulus by water balance method and empirical formula method is on the side of safety, and the research results can provide a reference for the rational selection of calculation method of drainage modulus in plain lake area.
【作者单位】：长江科学院农业水利研究所;武汉大学水资源与水电工程科学国家重点试验室;华中科技大学水电与数字化工程学院;
【基金】：国家自然科学基金项目(51509010;51379153;51309106) 中央级公益性科研院所基本科研业务费资助项目(CKSF2016028/NS;CKSF2015023/NS) “十二五”国家科技支撑计划项目(2012BAD08B03)
【分类号】：TU992
【正文快照】： 二五”国家科技支撑计划项目(2012BAD08B03)。0引言随着社会经济的快速发展,人类活动的影响加剧,使得涝灾致灾因子、孕灾环境和承灾体情势及其相互关系发生了显著变化[1],现有除涝工程体系已无法满足经济社会的减灾需求[2]。近年来,受全球气候变暖影响,极端天气尤其是短历时强

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