摘要
为了提高传统径流汇流模拟的时效性,提出了一种基于通用计算的径流汇流模型。模型采用纳维-斯托克斯作为基础方程。首先,文章探讨了利用通用计算进行径流汇流模拟的实现方法并设计了模拟计算流程。然后,以涪江流域中段为研究区域,将流域内25个常规站和区域站的实况降水数据为数据源,分别利用本文径流汇流模型和FloodArea模型对流域进行径流模拟,并将两种模型模拟结果与水文站实测数据进行对比分析。结果发现,基于通用计算的径流汇流模型不仅在模拟效率上相对于FloodArea模型有很大程度的提高,而且模拟结果具有更小的水位变化误差,与水文站实测水文数据具有更好拟合效果。模拟时效性和结果准确性的同时提升表明本文的径流汇流模型对暴雨洪涝预警预报具有重要的意义。
In order to improve the timeliness of traditional runoff confluence simulation, a general-purpose computation of runoff-confluence simulation model has proposed based on general calculation in this paper. The model uses Navier-Stokes Formula as the theoretical basis. Firstly, the method of runoff confluence simulation was discussed using general calculation and then a simulation calculation flow was designed. Then, taking the middle Fujiang River as a study area, the long-term precipitation data from 25 meteorological observational stations within the study area were taken as the input data. The runoff simulation had carried out by using both runoff confluence calculation model and FloodArea model, and the results simulated by the two models were compared with the measured data. It was found that the runoff confluence model based on general calculation not only improves the simulation efficiency as compared with FloodArea model, but also has smaller water level variation error and better fitting effect with measured data. Simulating timeliness and accuracy of the results show that the model has greatly improved the early warning and forecasting skill of rainstorms and floods.
作者
郭海燕
陈军
徐金霞
徐沅鑫
马振峰
GUO Haiyan;CHEN Jun;XU Jinxia;XU Yuanxin;MA Zhenfeng(Climate Center of Sichuan Province,Chengdu 610071,China;College of Resources and Environment,Chengdu University of Information Technology,Chengdu 610225,China;Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province,Chengdu 610072,China)
出处
《冰川冻土》
CSCD
北大核心
2019年第1期158-164,共7页
Journal of Glaciology and Geocryology
基金
四川省科技厅项目(2017JY0157)
四川省科技厅支撑计划项目(2015sz0214)资助
高原与盆地暴雨旱涝灾害四川省重点实验室2017年研发项目
