The changing of flow conditions caused by construction of hydro-projects will result in river's refor-mation and development of channel pattern.In this paper,the development of channel pattem in the process ofrefo...The changing of flow conditions caused by construction of hydro-projects will result in river's refor-mation and development of channel pattern.In this paper,the development of channel pattem in the process ofreformation is studied by means of flume experiments.Influence of slope,grain size,angle-of-inflow,dis-charge and discharge process are comprehensively analyzed according to the experimental data.It was foundthat the channel would be widened as the river slope or discharge increased and grain size decreased.If theangle-of-inflow was not zero,under certain conditions of grain size and discharge,a most suitable slope exist-ed,for which the river would develop into a pattem of meandering.Different discharge process would imposeon the change of river morphology,even caused transformation of channel patterns.Diversity in the capacity ofshaping rivers of different discharges especially the flood duration cast a light on the change of channel pattern.展开更多
基金Supported by National Key Basic Research and Development Program(973 Program)(2003CB415205)the National Natural Science Foundation of China(50479036)
文摘The changing of flow conditions caused by construction of hydro-projects will result in river's refor-mation and development of channel pattern.In this paper,the development of channel pattem in the process ofreformation is studied by means of flume experiments.Influence of slope,grain size,angle-of-inflow,dis-charge and discharge process are comprehensively analyzed according to the experimental data.It was foundthat the channel would be widened as the river slope or discharge increased and grain size decreased.If theangle-of-inflow was not zero,under certain conditions of grain size and discharge,a most suitable slope exist-ed,for which the river would develop into a pattem of meandering.Different discharge process would imposeon the change of river morphology,even caused transformation of channel patterns.Diversity in the capacity ofshaping rivers of different discharges especially the flood duration cast a light on the change of channel pattern.
