乌兰木伦河流域暴雨产沙分析研究

Study on rainfall and sediment yield in Wulanmulunhe watershed

乌兰木伦河流域位于多沙粗沙地区，其产流、产沙变化具有独特的规律．本文用考虑雨强时空分布的超渗产流模型及用前期影响雨量为参数分别就涨水、落水段的含沙量与流量关系的流域水沙经验模型以计算产流量和产沙量，效果良好，基本满足实用要求，具有生产价值，也可应用于同类流域．

Wulanmulunhe watershed located in the coarse heavy erosion region,where the processes of runoff producing and sediment yield have their specific characteristics. In this paper, an excess infiltration runoff producing model included the spatial and temporal distribution of rainfall in watershed is used to calculate the runoff volume,and a model which includs the parameters of antecedent precipitation and empiricial relationships between runoff discharge and sediment concentration in flood rise or flood recede stages is used to calculate the sediment yield. The calculation results are in well agreement.The model canbe used in the similar watershed.