| 基于FloodArea模型的一次特大暴雨洪涝淹没模拟 |
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| 作者姓名： | 旷 兰 田茂举 康 俊 翟丹华 刘 祥 庞 玥 海川 |
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| 作者单位： | 重庆市綦江区气象局,重庆市綦江区气象局,重庆市气候中心,重庆市气象台,重庆市气象服务中心,重庆市气象台,重庆市綦江区气象局 |
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| 基金项目： | 重庆市气象部门业务技术攻关项目 (YWJSGG-202128;YWJSGG-202012)。 |
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| 摘 要： | 利用蒲河流域内所有国家气象站以及区域自动气象站共28站逐小时降水实况、过程降水量、数字高程模型、土地利用、土壤类型等资料，采用FloodArea水动力模型，对2020年6月19日21时-22日20时出现的历史罕见暴雨洪涝过程进行洪水淹没模拟及效果检验。模拟结果表明：1)全过程模拟水位与实测水位整体拟合度较高，确定性系数DC达93.22%；2)蒲河上游来水较小，持续性强降水是造成此次洪涝水位偏高的主要原因，模拟显示蒲河流域中上游水位上涨明显，其中石角水文站模拟的最大上涨水位达7.61米，与实测上涨水位7.14米较为一致；3)FloodArea水动力模型能够较准确地反演出蒲河流域暴雨致洪个例的淹没进程，能够直观地反映出淹没范围、淹没深度的空间差异，且淹没深度与逐小时实测水位的确定性系数较高，淹没深度的突增对洪峰的预报预警具有一定的指示意义。
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| 关 键 词： | FloodArea水动力模型 暴雨洪涝 泰森多边形 面雨量 |
| 收稿时间： | 2022/2/28 0:00:00 |
| 修稿时间： | 2022/11/30 0:00:00 |
Flood inundation simulation of a heavy rainstorm based on FloodArea |
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| Authors: | KUANG Lan TIAN Maoju KANG Jun ZHAI Danhu LIU Xiang PANG Yue and HAI Chuan |
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| Institution: | Meteorological Bureau of Qijiang District,Chongqing,Meteorological Bureau of Qijiang District,Chongqing,Chongqing Climate Center,Chongqing Meteorological Station,Chongqing Meteorological Service Center,Chongqing Meteorological Station,Meteorological Bureau of Qijiang District,Chongqing |
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| Abstract: | Based on the hourly precipitation, process precipitation, digital elevation model, land use, soil type and other data of 28 national meteorological stations and regional automatic meteorological stations in Puhe River Basin, the flood inundation simulation and effect test of the historical rare rainstorm and flood process from 21:00 on June 19 to 20:00 on June 22, 2020 are carried out by using the flood area hydrodynamic model. The simulation results show that: 1) The overall fitting degree of the simulated water level and the measured water level in the whole process is high, and the certainty coefficient DC reaches 93.22%. 2) The inflow from the upper reaches of Puhe River was small, and the continuous heavy precipitation was the main reason for the high flood level. The simulation showed that the water level in the middle and upper reaches of Puhe River Basin increased significantly, and the maximum water level simulated by Shijiao hydrological station was 7.61 meters, which was consistent with the measured water level of 7.14 meters. 3) FloodArea hydrodynamic model can accurately reflect the performance of PuHe basin rainstorm flood process, to flood example can intuitively reflect the scope of flood, submerged depth of the space difference, and submerged depth and the deterministic coefficient of the measured water level is higher, one by one hour submerged depth of a spate of flood forecast warning has a certain instruction significance. |
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| Keywords: | FloodArea model Rainstorm and flood Tyson polygon Areal rainfall |
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