广东省主要河流最低通航水位变异分析

发布时间：2018-05-04 23:46

本文选题：枯水 + 内河航运　；参考：《水力发电学报》2016年07期

【摘要】：近些年剧烈的气候变化和高强度的人类活动,使得基于一致性的传统最低通航水位设计方法不再满足航运设计需求。本文选取广东省东江、西江、北江、韩江四个主要河流为研究对象,采用水文变异诊断系统对其年平均水位序列进行诊断分析,发现四大河流的控制出口站年平均水位序列均发生了中变异或强变异。针对变化环境下的水位资料,用综合历时曲线法对变异前后和整体的日水位序列进行分段计算,比较各站整体与变异后段序列设计水位值,结果显示潮安站偏大超过30%,其他站偏小超过30%;对保证率频率法中的年通航特征水位序列进行变异诊断,发现其也发生了不同形式和不同程度的变异,从而揭示了这两种传统计算方法在"非一致性"水位序列下存在的问题。
[Abstract]:In recent years, severe climate change and high intensity of human activities make the traditional design method of minimum navigable water level based on consistency no longer meet the requirements of shipping design. In this paper, four main rivers, Dongjiang, Xijiang, Beijiang and Hanjiang in Guangdong Province, are selected as research objects. The annual mean water level series is diagnosed and analyzed by hydrological variation diagnosis system. It is found that the annual mean water level series of the four major rivers have either moderate or strong variations. According to the water level data in the changing environment, the daily water level series before and after the variation are calculated by the method of comprehensive diachronic curve, and the design water level values of the whole station and the sequence after the variation are compared. The results show that the Chaoan station is larger than 30 percent, and the other stations are smaller than 30 percent. The variation of the annual navigable characteristic water level sequence in the method of guarantee rate frequency is diagnosed, and it is found that there are also variations in different forms and degrees. Thus, the problems of these two traditional methods in the "inconsistent" water level series are revealed.
【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;国家领土主权与海洋权益协同创新中心;水资源安全保障湖北省协同创新中心;长安大学环境科学与工程学院;
【基金】：国家自然科学基金(91547205;51579181;51179131;51190094) 广东省水利科技创新项目成果(2011-01)
【分类号】：U612.23

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