长江下游镇江段造床流量计算及特性分析
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摘要
造床流量是河床形态塑造的关键因素,也是河道整治、水工计算设计的主要参数。根据实测水文数据,分别采用三种常用造床流量计算方法,对长江下游镇江河段的造床流量进行求解计算,结果分析对比,表明Makovieve法更适用于镇江段造床流量的计算。基于算例结果建立长江下游河段造床流量经验方法,精度分析表明经验方法具有较高的精度。给出了推荐值。建立了适用于镇江河段造床流量计算的经验公式。
As the key influential factor on forming the river channel geomorphology,the dominant discharge is one of the main variables in hydro-calculations for designing water conservancies.In this study,we analyzed in detail several main formulas for dominant discharge calculation.Values based on the formulas were computed based on the measured series of the river channel Section of the lower Yangtze River at Zhenjiang.The results of the comparison show that the Makovieve method is more suitable for the calculation of the bed flow in Zhenjiang section.Based on the results of the study,the empirical method of establishing bed flow in the lower reaches of the Yangtze River is established,accuracy analysis shows that the empirical method has high accuracy.
As the key influential factor on forming the river channel geomorphology,the dominant discharge is one of the main variables in hydro-calculations for designing water conservancies.In this study,we analyzed in detail several main formulas for dominant discharge calculation.Values based on the formulas were computed based on the measured series of the river channel Section of the lower Yangtze River at Zhenjiang.The results of the comparison show that the Makovieve method is more suitable for the calculation of the bed flow in Zhenjiang section.Based on the results of the study,the empirical method of establishing bed flow in the lower reaches of the Yangtze River is established,accuracy analysis shows that the empirical method has high accuracy.
引文
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[4]Li Jingbao,Gu Jiahui,Dai Wen,et al.Water regime change and trend forecast of typical river reach in the middle reaches of Yangtze River under Three Gorges Reservoir operation[J].Journal of Glaciology and Geocryology,2016,38(5):1373-1384.[李景保,谷佳慧,代稳,等.三峡水库运行下长江中游典型河段水情变化及趋势预测[J].冰川冻土,2016,38(5):373-1384.]
[5]Yue Zhichun,Ma Xiaoyang,Zhang Hongwu.Model test study on river regulation of the low er Yellow River to Qingtongxia section of the Yellow River[J].Yellow River,2015,37(6):36-39.[岳志春,马晓阳,张红武.黄河下河沿至青铜峡段河道整治模型试验研究[J].人民黄河,2015,37(6):36-39.]
[6]Paul C,Van Genderen J L.Multisensor image fusion in remote sensing:concepts,metheds and application[J].International Journal of Remote Sensing,1998,19(5):823-854.
[7]Schowengerdt R A.Techniques for image processing and classifications in remote sensing[M].Academic Press,2012.
[8]Han Qiwei.Some laws of sediment transport and scouring and silting in the low er Yellow River[J].Sediment Research,2004(3):1-13.[韩其为.黄河下游输沙及冲淤的若干规律[J].泥沙研究,2004(3):1-13.]
[9]Qian Ning.River bed evolution[M].Beijing:Science Press,1989.[钱宁.河床演变学[M].北京:科学出版社,1989.]
[10]Dai Wen,LüDianqing,Li Jingbao,et al.Impacts of climate change and human activities on runoff variation in the middle reaches of Yangtze River[J].Journal of Glaciology and Geocryology,2016,38(2):488-497.[代稳,吕殿青,李景保,等.气候变化和人类活动对长江中游径流量变化影响分析[J].冰川冻土,2016,38(2):488-497.]
[11]Qi Dongmei,Li Yueqing,Chen Yongren,et al.Characteristics and causes of runoff variation in the source region of the Yangtze River under the background of climate change[J].Journal of Glaciology and Geocryology,2015,37(4):1075-1086.[齐冬梅,李跃清,陈永仁,等.气候变化背景下长江源区径流变化特征及其成因分析[J].冰川冻土,2015,37(4):1075-1086.]
[12]Chen Xujian,Han Qiwei,Fang Chunming.Variation of bedding flow in the low er Yellow River and its influence on river[J].Journal of Hydraulic Engineering,2007,38(1):15-22.[陈绪坚,韩其为,方春明.黄河下游造床流量的变化及其对河槽的影响[J].水利学报,2007,38(1):15-22.]