摘要
采用天然降雨径流小区试验的方法,通过观测天然降雨条件下坡面径流流速,对坡面侵蚀发生过程中的径流水动力学特性进行了研究。结果表明:植被覆盖的坡面和裸坡的径流水力学参数流速、雷诺数、弗汝德数均随降雨强度的增大而增大;阻力系数则随降雨强度的增大而减小。有植被覆盖的坡面流的雷诺数与弗汝德数则随雨强的变化相对平稳。
The experiment is to study dynamic characteristics of slope erosion under natural rainfall conditions by observing the slope under natural rainfall runoff velocity.The results showed that the Reynolds number and the Froude number of the slope coverd by vegetation and bare increased with the increase of rainfall intensity.The drag coefficient decreased with the rainfall intensity.the Reynolds number and the Froude number of the slope coverd by vegetation changed in relatively stable with the rainfall intensity.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2010年第5期598-601,共4页
Journal of Shenyang Agricultural University
基金
辽宁省自然科学基金项目(20062110)
辽宁省教育厅项目(L2010496)
关键词
天然降雨
坡面流
水力学参数
natural rainfall
shallow flow
hydraulic parameter
