中国农村水利水电Issue(1)：37-44,8.DOI:10.12396/znsd.2500424
基于TELEMAC-2D模型的嫩江干流洪水模拟分析研究
Numerical Simulation of the Nenjiang River Based on TELEMAC-2D Model
摘要
Abstract
Numerical modeling of river flood evolution plays a crucial role in flood risk management and disaster prevention strategies.However,the interaction of water flow over the wide-shallow river is complex,and the applicability and accuracy of traditional hydrodynamic models needs to be further explored.Wide-shallow main stem of the Nenjiang River is characterized by intricate riverbank formations and highly concentrated water management infrastructure.To address the above-mentioned issues,the Fulaerji-Jiangqiao stationof the Nenjiang River was selected as the study area,and high-resolution terrain and geomorphological datasets were utilized to depict the impact of topography and embankments within the river on water flow evolution.On this basis,a two-dimensional flood evolution simulation model of the selected study area was constructed by the TELEMAC-2D.The simulated discharges obtained from the TELEMAC-2D model were then discussed and compared with those from the MIKE21 model during the flood season.The results showed that the built TELEMAC-2D model had satisfactory performance on flood modelling.The simulated inundation area was consistent with actual flood coverage observed in the concurrent remote sensing imagery.Also,the modelling results could effectively reflect the water-blocking effects of inner embankments and local microtopography on flood routing within the river channel.For different flood events,the relative errors of the flood peak flow at the gauged stations were all less than 20%.Furthermore,the coefficient of determination between the simulated and measured discharge series for most flood events was above 0.9.The modelling results of the TELEMAC-2D model were comparable to those from the MIKE21 model.The simulated flood process sequences from these two models exhibited similar trends in flood onset and recession stages,and both were consistent with the measured flood hydrographs.Additionally,the floodplain flow threshold for the studied river reach was determined to be approximately 1 100 m³/s,and the model demonstrated satisfactory performance in modelling both floodplain and non-floodplain flood events of different magnitudes.The results indicated that the TELEMAC-2D model had satisfactory modelling capability and was suitable for flood routing in wide and shallow rivers.关键词
嫩江/宽浅型河道/洪水演进模拟/TELEMAC-2DKey words
Nenjiang/wide-shallow river/flood evolution simulation/TELEMAC-2D分类
建筑与水利引用本文复制引用
吴剑,杨婧瑶,王悦宇,杨彬,潘劭博,周之仪,刘子嘉,彭勇,丁勇..基于TELEMAC-2D模型的嫩江干流洪水模拟分析研究[J].中国农村水利水电,2026,(1):37-44,8.基金项目
国家自然科学基金(52309009) （52309009）
辽宁省博士科研启动项目(2023-BSBA-074). （2023-BSBA-074）
