黄河内蒙古段河网概化研究
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摘要
河网概化是水利模型建立的关键,也是研究流域水环境的基础,针对如何科学合理的对流域河网进行概化并与实际河网基本一致这一问题。以黄河流域内蒙古段作为研究对象,基于河网概化原则并结合实际情况,利用MIKE11进行了针对性的河网概化研究。其结果表明:概化河道呈倒"U"形,其主要包括:断面概化、河道概化、断面参数选取和调蓄能力分析,断面总计600个,以梯形断面的棱柱形河道为主,断面选取距离为500m-2000m之间,上底为400-500m,下底为300-450m之间,梯形高为1.3-3.5m,可引入陆域宽度来模拟乌梁素海上圩外水面的调蓄作用。
引文
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