论文部分内容阅读
汇流区域地貌形态是影响降雨径流过程的重要因素之一。以陕西绥德市某小流域的两条支沟(横断面分别为U型与V型)为研究对象,结合实测数据分析与基于物理概念的数值模拟方法,研究沟谷横断面类型对产流的影响。研究结果表明:在天然降雨条件下,V型支沟产流能力更强,土壤初始含水量、饱和渗透系数等因子影响洪峰值。雨型和初始地下水位对U、V型支沟产流都产生影响,U型的敏感程度更高。
The confluence regional topography is one of the important factors affecting rainfall runoff process. Taking two branch ditches (U-shaped and V-shaped) in a small watershed of Suide, Shaanxi as the research object, combining the measured data analysis with the numerical simulation method based on the physical concept, the effects of the cross-section type on runoff influences. The results show that under natural rainfall conditions, the V-shaped branch can produce more flow capacity, initial soil water content and saturated permeability coefficient affect the peak value. The rain type and the initial groundwater level have an impact on the runoff of the U and V branch channels, and the U-type is more sensitive.