A Research On Erosion Of Slope Planting Protection Of Railway Rock Slope

This thesis searches for the recent information of erosion dynamic process. Rainfall splash and water flow on surface of steep slope are two erosion characters of slope planting protection with theory analysis and investigation on site of Yu-Huai new railway. Rainfall erosion is mainly caused by rainfall splash, and rainfall run-off erosion is mainly caused by the integrating process of rainfall splash and overland sheet flow.Finite element models(FEM) of the slope are set up with the condition of rainfall and un-rainfall. Some conclusions are reached by FEM analysis and calculation under the different facts of density, cohesion, and friction angle of slope planting protection.1, The self-stability of slope planting protection is weak in rocky slope , the stability of slope planting protection relies on anchor bar and wire netting.2, The mainly reason of causing the deformation of vegetation is self-weight, when improve the cohesion, friction angle of the vegetation, the deformation of slope planting protection can not decrease effectively .3, Controlling the deformation of wire netting can decrease the deformation of slope planting protection radically, that are in favor of the stability of slope planting protection and rocky slope .4, Improving the cohesion, friction angle of the slope planting protection can increase the shear strength of slope planting protection , the resistance ability of rainfall splash erosion and rainfall-runoff erosion of slope planting protection is improved .