基于GR4J模型在浙江中小流域应用的适应性研究  

Adaptive study on the application of GR4J model in small and medium sized watersheds in Zhejiang Province

作　　者：周焕 杨锟 林文扬 舒全英 ZHOU Huan;YANG Kun;LIN Wenyang;SHU Quanying(Zhejiang Design Institute of Water Conservancy&Hydro-Electric Power Co.,Ltd.,Hangzhou 310002,Zhejiang,China;Zhejiang Tongji Vocational College of Science and Technology,Hangzhou 311231,Zhejiang,China)

机构地区：[1]浙江省水利水电勘测设计院有限责任公司,浙江杭州310002 [2]浙江同济科技职业学院,浙江杭州311231

出　　处：《水利水电技术(中英文)》2024年第S2期255-259,共5页Water Resources and Hydropower Engineering

基　　金：浙江省水利厅科技计划重大项目(RA2201);浙江省水利厅科技计划项目(RC2212)

摘　　要：浙江省位于我国沿海地区,拥有众多中小山区河流,建立一套适合当地流域且具有物理机制的水文模型对规划工程配置、规模选择以及工程调度是十分必要的。以浙江省典型中小流域为研究对象,采用GR4J水文模型对浙北、浙南、浙西、浙东及海岛典型流域共5个区域的各对应系列日降水、日蒸发和日径流过程进行模拟率定,率定参数优选采用PSO粒子群算法,以确定性系数与水量平衡最佳为寻优目标值。通过模型检验期在研究区域适应性进行分析评价。结果显示,GR4J模型在5个典型流域表现较好,率定期和检验期NSE(确定性系数)在0.77~0.91,径流总量的总体误差居于±10%以内。因此,GR4J模型在浙江典型中小流域日径流模拟中取得较高精度,且模型总体结构清晰、简洁,具有一定实用推广价值。Zhejiang Province is located in the coastal areas of China,with numerous small and medium-sized mountainous rivers.It is necessary to establish a hydrological model that is suitable for the local watershed and has physical mechanisms for planning engineering configuration,scale selection,and engineering scheduling.This article takes typical small and medium-sized watersheds in Zhejiang Province as the research object,and uses the GR4J hydrological model to simulate and calibrate the daily runoff processes of corresponding series in five typical watersheds in northern Zhejiang,southern Zhejiang,western Zhejiang,eastern Zhejiang,and islands.The adaptability of the study area is analyzed and evaluated during the model verification period.The result showed that the GR4J model performed well in five typical watersheds,with NSE(coefficient of certainty)ranging from 0.77 to 0.91 during the periodic and validation periods.The overall error of the total runoff was within±10%.Therefore,the GR4J model has achieved high accuracy in simulating daily runoff in typical small and medium-sized watersheds in Zhejiang,and the overall structure of the model is clear and concise,which has certain practical promotion value.

关 键 词：GR4J 日径流计算 NSE 峰值流量 基流 PSO粒子群算法 相对误差RE 

分 类 号：P333[天文地球—水文科学]