基于HEC-RAS二维建模的渗漏屏障有效性分析与洪水预测

Analysis of Leaky Barriers Effectiveness and Flood Prediction Based on HEC-RAS 2DModelling

渗漏屏障作为一种自然洪水管理(NFM)策略,以其减缓洪水和生态优势受到重视。通过应用HEC-RAS二维水动力学模型,对英格兰什罗普郡科弗代尔流域科尔夫河的支流威尔德溪进行了全面分析,特别关注了该区域安装的105个由当地树种构成的自然渗漏屏障的效果。研究目的在于评估这些渗漏屏障在洪水减缓和生态环境改善方面的作用结果,并验证HEC-RAS二维模型对河道水文数据的预测能力对洪水风险减少和生态系统恢复有积极影响。研究结果证实渗漏屏障在自然洪水管理中具有重要作用,对洪水风险减少和生态系统恢复有积极影响。HEC-RAS模型在洪水预测和水资源管理中的应用价值,为未来洪水管理提供了有益参考。

Leaky barriers are valued as a natural flood management(NFM)strategy for their flood mitigation and ecological advantages.This paper presents a comprehensive analysis of the Weald Brook,a tributary of the River Colfe in the Coverdale catchment,Shropshire,England,through the application of the HEC-RAS two-dimensional hydrodynamic model,with a particular focus on the effectiveness of 105natural leaky barriers consisting of native tree species installed in the area.The aim of the study was to assess the results of the role of these leaky barriers in flood mitigation and ecosystem enhancement,and to verify that the predictive power of the HEC-RAS 2Dmodel on stream hydrological data has a positive impact on flood risk reduction and ecosystem restoration.The results of the study confirm that leaky barriers play an important role in natural flood management and have a positive impact on flood risk reduction and ecosystem restoration.The value of the HEC-RAS model in flood prediction and water resource management provides a useful reference for future flood management.