干旱半干旱区中小流域洪水机器学习预警模型及其应用
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苏宏梅, 张楠, 冉新民, 康超
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Machine learning flood early warning model for small and medium watersheds in arid and semi-arid regions and its application
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SU Hongmei, ZHANG Nan, RAN Xinmin, KANG Chao
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表2 地形特征要素和洪水计算要素的插值结果与实际调查结果的统计分析
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Tab.2 Statistical analysis of the interpolation results and field investigation results of topographic features and flood calculation factors
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统计参数 | 调查结果 | 插值结果 | 差值 | 均值 | 中值 | 均方差 | 均值 | 中值 | 均方差 | 均值差百分比绝对值/% | 中值差百分比绝对值/% | 主沟道长度/km | 12.89 | 6.59 | 11.43 | 7.98 | 7.75 | 1.48 | 38.09 | 17.56 | 主沟比降/‰ | 50.15 | 44.15 | 26.67 | 54.19 | 58.53 | 9.67 | 8.05 | 32.58 | 汇流时间/h | 3.42 | 2.69 | 1.88 | 2.52 | 2.70 | 0.49 | 26.42 | 0.42 | 100 a重现期降雨量/mm | 51.25 | 53.00 | 10.80 | 49.25 | 54.53 | 9.55 | 3.91 | 2.89 | 暴雨时程分配/mm | 7.24 | 7.00 | 0.76 | 7.24 | 6.92 | 0.55 | 0.00 | 1.20 | 设计洪峰流量/(m3·s-1) | 159.49 | 75.10 | 154.01 | 126.17 | 103.05 | 77.76 | 20.89 | 37.22 | 临界雨量/mm | 34.08 | 34.90 | 11.37 | 32.34 | 38.77 | 11.57 | 5.11 | 11.10 | 准备转移雨量/mm | 22.20 | 22.70 | 7.45 | 21.08 | 25.31 | 7.57 | 5.04 | 11.49 | 立即转移雨量/mm | 27.47 | 29.00 | 7.60 | 26.13 | 29.80 | 7.58 | 4.86 | 2.74 |
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