Encounter of Heavy Rainfall in Lixiahe Waterlogged Area and Assessment of Drainage Risks
LAN Lin1(), MAO Yuan-yuan1, ZHU Da-wei2, LU Zhi-shi1
1 Jiangsu Provincial Water Resources Planning Bureau, Nanjing 210029,China 2 Nanjing Branch, Jiangsu Surveying and Design Institute of Water Resources Co., Ltd., Yangzhou 225127, China
LAN Lin, MAO Yuan-yuan, ZHU Da-wei, LU Zhi-shi. Encounter of Heavy Rainfall in Lixiahe Waterlogged Area and Assessment of Drainage Risks[J]. Journal of Changjiang River Scientific Research Institute, 2025, 42(1): 90-97.
Table 5 Co-occurrence probability values of rainfall with specified frequency in two waterlogged areas under annual maximum 3-day,7-day and 15-day rainfall combinations
Table 5 Co-occurrence probability values of rainfall with specified frequency in two waterlogged areas under annual maximum 3-day,7-day and 15-day rainfall combinations
年最大时 段/d
不同重现期的同现概率/%
100 a
50 a
20 a
10 a
5 a
3
0
0.2
1.8
5.3
14.5
7
0
0.3
1.1
5.1
15.7
15
0.1
0.4
1.3
3.5
14.7
Fig.3 Three-dimensional plot of co-occurrence of rainfall events in two waterlogged areas under annual maximum 15-day rainfall combinations
Fig.3 Three-dimensional plot of co-occurrence of rainfall events in two waterlogged areas under annual maximum 15-day rainfall combinations
Fig.4 Three-dimensional distribution of conditions for rainfall events in two waterlogged areas under annual maximum 15-day rainfall combinations
Fig.4 Three-dimensional distribution of conditions for rainfall events in two waterlogged areas under annual maximum 15-day rainfall combinations
Fig.5 Conditional probability distribution for Doubei area when Fubu area experiences design rainfall at specified frequency
Fig.5 Conditional probability distribution for Doubei area when Fubu area experiences design rainfall at specified frequency
Table 6 Conditional probability values for Doubei area %