| 马强,李郑淼,董芳睿,张珂健,杨邦,刘昌军.流域数字孪生防洪模型的构建：以子牙河“23·7”大洪水复盘为例[J].水利学报,2025,56(1):73-84 |
| 流域数字孪生防洪模型的构建：以子牙河“23·7”大洪水复盘为例 |
| Flood modeling developed for digital twin watershed：A case study of “23·7” great flood assessment in Ziya River Basin |
| 投稿时间：2024-02-17 |
| DOI：10.13243/j.cnki.slxb.20240086 |
| 中文关键词: “23·7”特大洪水 数字孪生流域 分布式水文模型 水动力模拟 |
| 英文关键词: “23·7”catastrophic flood digital twin watershed distributed hydrological model hydraulic simulation |
| 基金项目:国家重点研发计划项目(2023YFC3006702);水利部重大科技项目(SKR-2022034) |
|
| 摘要点击次数: 945 |
| 全文下载次数: 684 |
| 中文摘要: |
| 对于产流机制复杂、人类活动频繁的大型集水区，针对不同产流区下垫面特征，优选模拟算法并构建水利专业模型，是决定该流域数字孪生建设成败的关键。本文以海河流域子牙河系“23·7”大洪水模拟复盘为例，构建了基于国产水文、水动力模拟算法的复杂流域数字孪生防洪模型：选用时空变源分布式水文模型及二维水动力模型，分别对子牙河献县枢纽以上流域及启用的蓄滞洪区进行洪水过程动态模拟分析，以解析洪水来源、量化水利工程功效、确定洪水防御薄弱环节，并指导未来防洪规划的制定。本研究所选建模范围内，26个有资料站点模拟平均洪峰误差为7%，平均纳什系数为0.7，模拟效果较好。通过对模拟结果的分析，发现在子牙河上、中游集水区呈现明显混合产流模式;朱庄、黄壁庄等大型水库在应对“23·7”大洪水过程中防洪减灾效益明显。经黄壁庄水库拦蓄后，滹沱河洪水入献县泛区造成的淹没面积对比未拦蓄场景减少约77%。本文构建的流域数字孪生防洪模型技术路线清晰可行，可为今后流域数字孪生模型构建及向其他地区推广提供参考。 |
| 英文摘要: |
| According to the large catchment characterized with complex runoff generation and confluence mechanisms and strongly affected by serious human activities，the key point to successfully set up the digital twin platform is how to select the most suitable approach to simulate the hydrological and hydraulic processes.In this study，taking the “23·7” great flood happened in Ziya River Basin，a digital twin flood modelling has been built with integration of hydrological and hydraulic models developed in China.In order to reach the objectives for clearly understanding the causes and sources of the flood flow and quantitatively evaluating the performances of hydraulic constructions，the distributed hydrological models covered full catchment above Xianxian hydro-junction and three high resolution 2D hydraulic models over three flood storage areas has been set up and integrated into a modelling platform.The simulation results of 26 gauging stations shows higher accuracy with 7% difference of flood peak and averaged NSE 0.7.From this modelling assessment，the upper and middle parts of the Ziya River Basin showed an obvious Horton and Dunne mixed runoff generation mechanism during the whole flood period.Scientifically optimized the outflow of large reservoirs such as Zhuzhuang and Huangbizhuang reservoirs，the flooded area in Xianxian flood storage area has been reduced 77%.The technical route of river basin digital twin flood modelling developed in this study is clear and feasible，which can be used as reference for guiding the implement of digital twin watershed to other places in the future. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |