Rainfall Model Test and Numerical Analysis of Seepage Characteristics of Dump Slope
In order to study the variation law of slope seepage characteristics under rainfall conditions,taking a stope dump as the research object,the indoor rainfall model test was used to analyze the variation law of seepage field of different soil materials.At the same time,FLAC3D numerical simulation software was used to simulate rainfall infiltration of three-dimensional dump model.The results are concluded as follows.Firstly,under the action of rainfall,the response characteristics of moisture content,matrix suction and pore water pressure of soil slope model are significant,and the response priority of moisture content is the highest.Secondly,compared with 2# stope soil material,1# stope soil material has stronger permeability,and the expansion area of wetting front,saturation and pore water pressure is larger.Furthermore,the soil with strong permeability is prone to landslide,and the soil with weak permeability is prone to gully cracks.The matrix suction will continue to decrease,and the decrease of matrix suction will affect the shear strength index of the soil,and the decrease is easy to cause landslides.Through the rainfall simulation of the three-dimensional model,it can be seen that rainfall has a great influence on the seepage characteristics of the slope.Rainfall causes the pore water pressure in the dumping area to increase continuously,which may cause landslides.
万方数据
维普
