A Study of Rainfall-Runoff Movement Process on High and Steep Slopes Affected by Double Turbulence Sources.

摘要: To increase the available land area, a large-scale remediation campaign was carried out in loess hilly and gully area. A large number of high steep slopes have been produced construction road engineering water conservancy engineering, these will cause serious soil erosion under rainfall conditions. Because runoff is simultaneously affected by slope, bed surface rainfall, movement characteristics are complex. It difficult to consider all influencing factors existing models, especially for slopes. In this study, artificial experiments were conducted study rainfall-runoff hydraulic processes different intensities slope gradients, modified method proposed model key parameters (i.e., equilibrium time, line, processes) on The results showed that (1) For (a 70° compared 5° slope), generation confluence time decreased significantly. At same single width had power function relationship with intensity gradient. (2) patterns from those gentle more likely change. Reynolds Froude flow changed slowly when less than critical gradient increased significantly exceeded (3) Based analysis “double turbulent theory thin-layer high-steep slope”, combined dispersed motion wave model, calculating hydrodynamic proposed. Then, verified indoor outdoor experiments. research not only theoretical significance, but also provide accurate calculation design involved treatment engineering.