摘要
本文以水分子在土壤中受重力、土壤和气体共同作用的角度,分析了水分在土壤中水平向的运动和受力特征,提出了以重力作用为主要特征的地貌单位线模型。该模型以简化地形参数为主要参数,具有基于降雨、地形地貌和土壤特性的分布式流域汇流水文模型特征。运用该模型计算了尼尔基水库净雨单位线,比较了尼尔基水库运用历史洪水率定的单位线,给出了运用该单位线做出的1998年8月大洪水降雨径流预报成果,证明了地貌净雨单位线理论的可靠性。
The paper analyzes water molecular horizontal movement water and stress characteristics in soil and puts forward geomorphology unit hydrograph model with gravity action as its main characteristic from perspective of effect of gravity,soil and air on water module in soil.The model has characteristics of distributed model based on rainfall,topography and geomorphology and soil properties and takes simplified topography parameter as main parameter.The paper calculates net rainfall unit hydrograph of Nierji reservoir with the model,compares with unit hydrograph simulated with historical flood,provides rainfall-runoff forecasting result of flood in August in 1998 with the unit hydrograph and proves reliability of geomorphology net rainfall unit hydrograph theory.
出处
《东北水利水电》
2011年第12期45-47,72,共3页
Water Resources & Hydropower of Northeast China
关键词
水文预报
地貌
净雨
单位线
重力作用
hydrological forecasting
geomorphology
net rainfall
unit hydrograph
gravity action
