基于函数性质的场次洪水自动识别方法
Automatic flood identification method based on function properties
投稿时间:2020-12-23  修订日期:2020-12-23
DOI:
中文关键词:  场次洪水  自动识别  函数性质
英文关键词:Flood event  Automatic flood identification  Function properties
基金项目:
作者单位邮编
李匡 中国水利水电科学研究院 100038
刘可新 中国水利水电科学研究院 
梁犁丽 中国长江三峡集团有限公司 科学技术研究院 
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中文摘要:
      人工选取场次洪水效率较低,本文提出一种从连续水文过程中自动识别场次洪水的方法。该方法基于函数的凹凸性及极值,同时考虑了洪峰阈值、洪峰距离阈值、起止流量阈值、雨峰阈值等限制条件。详细介绍了方法步骤,并进一步分析了起止流量阈值、雨峰阈值对识别结果的影响。应用结果显示,该方法可较为准确的识别场次洪水;分析结果显示,起止流量阈值、雨峰阈值对方法应用效果较为敏感。
英文摘要:
      The efficiency of artificial flood selection is low. In this paper, a method of automatic flood identification from continuous hydrological process is proposed. The method is based on the convexity and extremum of the function, and the limit conditions such as flood peak threshold, flood peak distance threshold, starting and ending flow threshold and rainfall peak threshold are considered.The method steps are introduced in detail, and the influence of starting and ending flow threshold and rain peak on the identification result is further analyzed. The application results show that the method can accurately identify the floods; the analysis results show that the threshold of starting and ending flow and rain peak are sensitive to the application effect of the method.
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