Study on Slope Surface Shape of Homogeneous Soil Slope

The research on slope is concentrated on stability analysis at present. Although there is little research on slope surface shape, it has important theoretical and practical significance. Based on guaranteeing the same earthwork, the shape of slope surfaces between single gradient slope surface and two-gradient slope surface whose lower part is steeper than upper part are compared. It’s concluded that (1) based on guaranteeing the same earthwork, two-gradient slope surface, whose lower part is steeper than upper part, is stabler than single gradient slope surface and when the lower part is vertical wall, the slope is stablest; (2) the height of vertical wall has a knee point, i.e. when more than this value ,the stability of slope decreases.