荆江—洞庭湖水沙数学模型研究  

Mathematical model for flow-sediment transportation of Jingjiang River-Dongting Lake network

作　　者：吴作平[1] 杨国录[1] 甘明辉[2] 

机构地区：[1]武汉大学水利水电学院,湖北武汉430072 [2]湖南省水利厅,湖南长沙410007

出　　处：《水利学报》2003年第7期96-100,共5页Journal of Hydraulic Engineering

基　　金：国家自然科学基金重大项目资助(50099620)

摘　　要：在对复杂的荆江—洞庭湖水系进行概化的基础上,根据其中各节点和湖泊的实际情况,建立了对整个荆江—洞庭湖水系进行模拟计算的复杂河网水沙数学模型。采用1996年的相关资料进行了验证,结果表明,模型计算值与实测值吻合较好,说明本文对荆江—洞庭湖复杂边界条件的概化,特别是对湖泊调蓄作用的处理是比较符合实际情况的,模型可以模拟边界条件复杂的河网。运用该模型,可以计算出整个荆江—洞庭湖区域的洪水演进、泥沙淤积和河床变形情况,可供防洪调度以及江湖治理部门参考。On the basis of generalized network a mathematical model for simulating the flowsediment transportation of Jingjiang RiverDongting Lake network is established.In the model,the regulation effect of lake on river network is taken into account and equations of discharge,sediment and energy conservation are established for every inflowoutflow node.The validity of the model is verified by the observation data in 1996Good agreement between calcuation and observation data is attained.The model is applied to predict the flood propagation,sedimentation transport and river erosion of the whole riverlake network system.

关 键 词：河网 概化 节点 数学模型 

分 类 号：TV149[水利工程—水力学及河流动力学]