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浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
断面间距对黄河下游高含沙洪水模拟结果影响
张晓雷1,2, 夏军强1, 邓珊珊1, 王增辉1
1. 武汉大学 水资源与水电工程科学国家重点实验室,湖北 武汉 430072；2. 华北水利水电大学 水利学院,河南 郑州 450011
Effect of different cross sectional spacing on simulation results of hyperconcentrated floods in Lower Yellow River
ZHANG Xiao lei1,2, XIA Jun qiang1, DENG Shan shan1, WANG Zeng hui1
1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450011, China
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摘要：

针对黄河下游河道特点及高含沙洪水演进特性,建立基于耦合解法的一维非恒定流非均匀沙数学模型.利用该模型计算黄河下游2004年8月的高含沙洪水过程,采用实测水沙资料对模型进行验证.验证结果表明,各水文站的流量、含沙量等计算值与实测值吻合较好,所建模型可以用于模拟高含沙洪水演进及冲淤过程.采用该模型计算不同断面间距条件下同场次的高含沙洪水过程,分析不同断面间距下的计算结果.分析表明：不同断面间距对一维模型的计算精度有一定影响,在计算边界条件及其他参数取值相同的条件下,计算断面间距对流量及水位的影响相对较小,对含沙量及河道冲淤过程的影响较明显.在黄河下游地形及水沙特性均复杂的情况下,采用一维数学模型计算高含沙洪水过程时,应适当考虑断面间距的影响.
Abstract:

A one dimensional coupled morphodynamic model was developed to simulate the routing of hyperconcentrated floods and the process of channel evolution in the Lower Yellow River (LYR). The model was applied to simulate the 2004 hyperconcentrated flood event occurring in the LYR, with the measured data of discharge and sediment concentration being used to calibrate the model. The model predictions accorded with the observed data. The calibrated model was used to simulate the same flood event under five scenarios with different space increments. The effect of different space increments on the simulation results was analyzed. Different space increments can influence the predicative accuracy of the proposed model. The effects on the simulated discharges and water levels were relatively lower, compared with the effects on the concentrations and channel evolution volumes. It is necessary to adopt a suitable cross sectional spacing when simulating hyperconcentrated floods occurring in the LYR using a morphodynamic model.
出版日期: 2016-04-01
:  TV 143  
基金资助:

国家自然科学基金资助项目（51379156; 51579186）；水利部公益性行业科研专项经费资助项目（201401038）.
通讯作者: 夏军强,男,教授,博导. ORCID: 0000 0001 7613 3457.     E-mail: xiajq@whu.edu.cn
作者简介: 张晓雷（1981—）,男,讲师,博士生,从事河流动力学的研究. ORCID: 0000 0002 0570 4889. E-mail: zxl1334@163.com
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引用本文:

张晓雷, 夏军强, 邓珊珊, 王增辉. 断面间距对黄河下游高含沙洪水模拟结果影响[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.04.019.

ZHANG Xiao lei, XIA Jun qiang, DENG Shan shan, WANG Zeng hui. Effect of different cross sectional spacing on simulation results of hyperconcentrated floods in Lower Yellow River. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.04.019.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.04.019    或    http://www.zjujournals.com/eng/CN/Y2016/V50/I4/735

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