摘要
分布式水文模型是水文模型的发展趋势,南京水文研究所模型(NRIHM)是架构灵活的集总式水文模型,为探索基于NRIHM的分布式水文模型在湿润流域开展水文模拟的可行性与适应性,在湿润地区南大洼—沙河集嵌套流域开展了相关研究。首先基于NRIHM产流模型构建思路构建了一层产流模型与二层产流模型,利用天然试验流域观测成果进行了栅格点尺度的产流模拟验证,对比模拟结果发现二层-抛物线的组合方式模拟效果更优。基于此种产流计算方法,构建了具有二层土壤结构的分布式水文模型,以长江滁河水系沙河集水库以上集水区为研究流域开展应用,率定期和验证期平均确定性系数分别为0.80和0.86,平均洪峰、洪量相对误差也均低于20%,表明该模型能够较好模拟实际径流过程,初步证明了该模型在湿润地区具有较好的适用性。
The distributed hydrological model is the development trend of hydrological models.The model of Nanjing Research Institute of Hydrology(NRIHM)is a lumped hydrological model with a flexible architecture.In order to explore the feasibility and adaptability of using a distributed hydrological model based on NRIHM to carry out hydrological simulation in the humid watershed,the Nandawa-Shahe nested watershed in the humid area was studied.Firstly,based on the construction idea of the NRIHM runoff generation model,a one-layer runoff generation model and a two-layer runoff generation model were constructed.The runoff generation simulation verification at the grid point scale was carried out by using the observation results of the natural experimental watershed.The simulation results were compared,and it was found that the two-layer parabola combination method had a better simulation effect.Based on this runoff generation calculation method,a distributed hydrological model with a two-layer soil structure was constructed.The application was carried out in the catchment area above the Shaheji Reservoir in the Chuhe River system of the Yangtze River.The average deterministic coefficients of the calibration period and the verification period were 0.80 and 0.86,respectively.The relative errors of average flood peak and flood volume were also less than 20%,indicating that the model could better simulate the actual runoff process,which preliminarily proved that the model had good applicability in humid areas.
作者
许钦
刘露霖
龙杰
金晨
蔡晶
林晓清
张坤
XU Qin;LIU Lulin;LONG Jie;JIN Chen;CAI Jing;LIN Xiaoqing;ZHANG Kun(The National Key Laboratory of Water Disaster Prevention,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Hydrology and Water Resources Department,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Yangtze Institute for Conservation and Development,Nanjing 210098,China;School of Hydraulic Engineering,Wanjiang University of Technology,Ma′anshan,243031)
出处
《人民珠江》
2024年第6期107-117,共11页
Pearl River
基金
国家自然科学基金青年项目(52209031)
水利部重大科技项目(SKR-2022067)
水灾害防御全国重点实验室基本科研业务费专项资金项目(Y523008)
南京水利科学研究院中央级公益性科研院所基本科研业务费专项资金项目(Y522018、Y522001)。
关键词
NRIHM产流计算模型
分布式水文模型
水文模拟
产流计算
NRIHM for runoff generation calculation
distributed hydrological model
hydrological simulation
runoff generation calculation
