中文摘要：

针对现有的河道水流洪水演算模型只能模拟单一变量（流量或水位）的问题,以水流连续方程和河段蓄水量的两种不同表达形式（蓄水量等于平均过水断面面积与河段长乘积,蓄水量等于河段平均流量与传播时间的乘积）为基础,对马斯京根模型进行了通用性改进,提出了双变量耦合通用演算模型.选取了四大水系（包括内陆河流和入海河流）的16个河段汛期洪水资料进行模型检验,模型验证考虑了地理范围、不同的河段特征和水力特征、洪水量级等因素,全面地检验了模型结构的合理性和模拟实际洪水的有效性.将双变量耦合通用演算模型与传统的马斯京根法进行了效果比较,结果表明双变量耦合通用演算模型的模拟精度高于马斯京根法,模拟效果比马斯京根法稳定一些,而且具有较好的通用性.

英文摘要：

A significant inability of tlie existing river flood routing models is their limitatior water stage）. The research proposes a ＇general bivariate＂ coupling routing method that improves tmetliod and can simulate double variables simultaneously. The proposed model is based on the flow continuity equation and two dif-ferent forms of river reach storage equation ： （ 1 ） the storage of a river channel equals the pand the river channel length; （2） the storage of a river channel equals the product of the mean discharge of a river channel and theflowtravel time. In order to consider the representative of diverse factors,including geographical scope, river channel features,flood magnitiade,hydraulic characteristics and et a l ,the proposed model is tested by observed data of flood seasons which is select-ed form 16 rivers channels of 4 river basins in China. The rationality of model stnactiare and pdetermined comprehensively. When compared with Muskingum routing method,the approach can lead to more accurate simulationsand the performance is more stable than Muskingum routing method. The proposed model is min real cases.