| 基于FloodArea模型的呼和浩特市城区大青山南麓山洪致灾临界雨量研究 |
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| 引用本文： | 魏巍,杨晶,贾晓红,刘新.基于FloodArea模型的呼和浩特市城区大青山南麓山洪致灾临界雨量研究[J].新疆气象,2024,18(4):113-119. |
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| 作者姓名： | 魏巍 杨晶 贾晓红 刘新 |
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| 作者单位： | 内蒙古气候中心,内蒙古气候中心,内蒙古气象服务中心,内蒙古气候中心 |
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| 基金项目： | 内蒙古自治区科技计划项目(2021GG0019);内蒙古自治区自然科学基金项目(2022LHMS04004);内蒙古自治区科学技术厅科技计划项目“气候变化对内蒙古黄河流域水资源影响评估研究”。 |
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| 摘 要： | 以呼和浩特市城区北部大青山南麓山洪沟流域为研究区域,利用流域内国家气象站以及区域气象站逐小时降水数据、数字高程模型DEM数据、土地利用数据等资料,采用FloodArea淹没模型,对1998年7月12日和2020年8月1日暴雨时段进行洪水动态淹没模拟和效果检验。结果表明：对于1998年7月12日暴雨过程,F1oodArea水动力模型模拟结果与实际情况较为吻合,该流域内9条山洪沟洪水淹没深度与累计9小时滑动面雨量的相关性最好,并构建了面雨量与淹没深度的回归关系方程,基于隐患点3个风险等级,最终确定了不同等级下的临界面雨量,以红山口沟为例,分别为69.9mm(1级),39.3mm(2级),17.2mm(3级)。对于2020年8月1日暴雨过程,模型模拟结果基本与山洪过程一致,也证明了上述线性回归模型的适用性,为今后进一步建立全市山洪灾害预报服务奠定了基础。
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| 关 键 词： | 山洪 FloodArea模型 线性回归模型 临界面雨量 |
| 收稿时间： | 2023/8/29 0:00:00 |
| 修稿时间： | 2024/1/25 0:00:00 |
Study on the critical rainfall of flash floods at the south foot of Daqinshan in Hohhot based on F1oodArea model |
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| WEI wei,Yangjing,JIA xiaohong and Liuxin.Study on the critical rainfall of flash floods at the south foot of Daqinshan in Hohhot based on F1oodArea model[J].Bimonthly of Xinjiang Meteorology,2024,18(4):113-119. |
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| Authors: | WEI wei Yangjing JIA xiaohong and Liuxin |
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| Institution: | Inner Mongolia Climate Center,Hohhot,Inner Mongolia,Inner Mongolia Climate Center,Hohhot,Inner Mongolia,Inner Mongolia Service Center of Meteorology,Hohhot,Inner Mongolia,Inner Mongolia Climate Center,Hohhot,Inner Mongolia |
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| Abstract: | Taking the gully watershed at the south foot of Daqing Mountain in the north of Hohhot City as the study area, and based on the hourly precipitation data of national meteorological stations and regional meteorological stations in the basin , digital elevation model DEM data, and land use data,the flood dynamic inundation simulation and effect test were carried out for two rainstorm periods on July 12, 1998 and August 1, 2020 by using the FloodArea model. The results showed that the simulation results of the F1oodArea hydrodynamic model were in good agreement with the actual situation for the torrential rain process on July 12, 1998. The flood inundation depth of 9 gullies in the basin had the best correlation with the accumulated 9-hour sliding surface rainfall, and the regression relationship equation between areal rainfall and submerged depth was constructed. Based on the three risk levels of hidden danger points, the critical rainfall at different levels were finally determined.take the Hongshankou gully as an example: 69.9mm (grade 1), 39.3mm (grade 2), 17.2mm (grade 3). For the rainstorm process on August 1, 2020, the model simulation results were basically consistent with the torrential flood process, which also proved the applicability of the above linear regression model, laying a foundation for the further establishment of the city"s torrential flood disaster forecast service in the future. |
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| Keywords: | torrential flood FloodArea model Linear regression model Critical surface rain |
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