EFFECTS OF ROCK SPATIAL DISTRIBUTIONS ON STABILITY OF ROCK-SOIL-MIXTURE SLOPE

Soil-rock-mixture is widely distributed in nature. Due to its variety in component, difference in rock’s size and random distribution of rocks, the physical and mechanical properties of soil-rock-mixture are very complex. In previous studies of stability analysis of soil-rock-mixture slope, the slope was usually simplified as homogeneous soil materials without considering the influence of rocks. In the present work, the shear band of soil and four different kinds of soil-rock-mixture slopes under gravity (quasi-static case) and pile driving load (dynamic case) are analyzed, respectively. Using the strength reduction method in the finite element simulation, the influences of rocks and their spatial distributions on the slope stability are discussed. The results show that the shear band of soil-rock-mixture slope has obvious rounding rock effect, and different locations of rocks have different effects on the stability of rock-soil-mixture slope.