计入回水壅高的水库临时淹没范围快速确定方法  

Rapid determination of temporary inundation extent of reservoir withbackwater height included

作　　者：邓理思 DENG Lisi(China Water Resources Pearl River Planning Surveying&Designing Co.,Ltd.,Guangzhou 510611,China)

机构地区：[1]中水珠江规划勘测设计有限公司,广东广州510611

出　　处：《人民长江》2024年第9期66-70,共5页Yangtze River

基　　金：广东省海洋经济发展(海洋六大产业)专项资金项目(GDNRC[2022]18)。

摘　　要：为快速分析水电站汛期不同水位控制下的临时淹没影响,评估可能产生的淹没损失情况,以满足水电站汛期水位动态控制的需要,提出了一种考虑回水壅高的临时淹没范围快速确定方法。该方法基于Python语言进行ArcGIS平台的线性插值工具二次开发,从而获得了回水的DEM,之后再与库区DEM进行相应计算,即可获得水电站汛期不同抬高运行水位下的库区淹没范围。将该方法在红水河岩滩水电站进行了应用验证。验证结果表明:所提方法可在8 s内输出临时淹没范围,与经典水动力学模型HEC-RAS进行了对比分析,所建模型的总体精度为0.92,能大幅提高水库不同水位控制下临时淹没影响的分析效率。In order to quickly analyze the temporary inundation under the different controlled water levels of hydropower plants in flood seasons,assess the possible inundation loss,and to meet the needs of dynamic water level control in flood season of hydropower stations,a method for rapid determination of temporary inundation range considering backwater elevation was proposed.This method was based on Python for the secondary development of linear interpolation tool on ArcGIS platform.By obtaining the backwater DEM and performing corresponding calculations with the reservoir area DEM,the inundation range of the reservoir area under different controlled water levels during the flood season can be obtained.The model was applied and verified in Yantan Hydropower Station of Hongshui River.The results showed that the proposed method can output the temporary inundation range within 8 s.Compared with classical hydrodynamic model HEC-RAS,the overall accuracy of the proposed model was 0.92,which can greatly improve the analysis efficiency of the temporary inundation effect under the different control water levels of reservoirs.

关 键 词：回水壅高 水库临时淹没范围 淹没影响 岩滩水电站 

分 类 号：TV697[水利工程—水利水电工程]