Research on stochastic model and stability analysis of soil-rock mixture slope based on sort judgment

摘要

Soil-rock mixture is different from conventional soil and rock materials.Inhomogeneity is an obvious feature of soil-rock mixture and the material component is one of intrinsic factors to influence the stability of soil-rock mixture slope.Mathematical intervals are defined for sort judgment basing on material component of soil-rock mixture.For each unit,sort judgment is dealt with by Monte Carlo method,and the corresponding value of the physico-mechanical parameter is given to unit of sort units.By this means,material component proportions of numerical model are equal to that of real states of soil-rock mixture slope.Stability analysis of soil-rock mixture slope is taken by the strength reduction method and the influence of material components contents on stability of soil-rock mixture slope is researched by numerical experimentations.The results indicate that it is unsafety to calculate the factor of safety by use of homogeneous slope model.