Study On Seepage Regularity Analytical Model Of Fractured Soil Slope

In the case of soil slope instability after earthquakes,a lot of slope instability caused by rainfall was found.Many scholars have made a lot of research on this type of slope failure.The main reason for the instability of the slope is that there are a lot of cracks in the body after the earthquake action,and the existence of these fissures becomes the water migration of the channel,so that the rapid decline in the mechanical properties of the soil eventually lead to slope failure.It is already mature to study the analytical solution of one-dimensional saturated-unsaturated seepage flow,but because the boundary condition is too complex and difficult to solve when solving the two-dimensional saturated-unsaturated seepage formula,The study of saturated-unsaturated seepage is basically dependent on physical experiments and numerical simulations to study.Based on the previous analysis of one-dimensional saturated-unsaturated seepage formula,the one-dimensional analytical solution is extended to the analytical solution of two-dimensional saturated-unsaturated fissured homogeneous soil seepage.The change of pore water pressure in fractured soil and Fissure soil slope is analyzed and solved.The influence of different crack patterns on Soil and soil slope seepage.The main contents of this paper are focused on the following two aspects.(1)The analytical solution of one dimensional saturated unsaturated seepage equation is further expanded,and an analytical model for the two-dimensional saturated unsaturated seepage flow is established,at the time explicit analytical solutions of two-dimensional seepage control equations are given.(2)In this paper,the influence of different fracture modes(fracture depth,fracture location and fracture density)on the seepage of soil and slope is discussed in detail by means of two-dimensional seepage analysis model.It is found that the change of fissure depth has a great influence on the rainfall infiltration of soil and slope.However,the seepage of the slope containing the fissure is different from that of the soil.In the early stage of rainfall infiltration,since the soil of the slope part is thinner than that of the top of the slope,the water is the first to move towards the slope site,which leads to the phenomenon that the pore water pressure at the top of the slope isrelatively reduced.The developmental width and the developmental quantity of the soil and the slope of the slope change,the impact of rainfall infiltration depth is relatively minor,there is only a slight change...