Study on Strength, Deformation Characteristics and Interaction Between Soil and Stone of Soil-rock Mixture

Abstract

Soil and rock mixture is a kind of non-uniform, discontinuous, internal structure of complex and irregular geological body. Unlike the general soil, it is a multiphase system. The mechanical properties of the various components constituting the soil-rock mixture are very different. At the same time there is a complex interaction between soil and stone. In this paper, we study the strength and deformation characteristics of soil- rock mixture and the interaction of soil and rock. With the increase of confining pressure, the shear strength of the soil-rock mixture is increased. The amount of displacement of the upper breccias is the largest. The displacement of the central breccias is small and produces both lateral and vertical displacements. The lower breccias produce almost no vertical displacement, but the outside breccias produced a significant lateral displacement. The breccias will rotate during the cutting of soil samples. And the angle of rotation is related to the size, shape, direction, spatial position, force state, and the interaction between the breccias. The breccias will be subjected to different tensile stresses by the soil during the shearing process. It will produce earth and stone off phenomenon.