Experimental Study on the Influence of Substrate Properties on Rainfall Infiltration and Runoff from Ecological Slopes

Rain is an important factor influencing the instability of ecological slopes. There little research on inherent quantitative influence substrate properties slope runoff and water infiltration to support accurate protection design. In this paper, characteristics quantitatively analyzed by constructing large physical models with different for artificial rainfall simulations. The experimental results showed that cumulative volume rate were positively correlated cement content thickness in a 4 h, 60 mm/h artificially simulated rainfall. Specifically, increased 2.06% every 1% increase content, 3.93% 1 cm thickness. inhibited advance wetting front, at locations, transport front exhibited mid-slope > upslope. Moreover, non-linear relationship time as power function V = a·tb, showing linear parameters b, b. negatively thickness, shown 2.2% decrease 4.73%