土质边坡中的滑面常常切过土体中抗剪强度的最弱部位,并尽可能使其几何长度取极小值。非均质土坡中存在物理力学性质不同的地层和各种几何形状的透镜体,其接触面常常具有较弱的抗剪强度值,常常是滑面切过的部位。本文阐述了非均质土坡中滑面形成机理,给出了非均质土坡确定其滑面圆心的方法。 The slip surface in soil slopes often cuts through the weakest part of the soil in shear strength and minimizes its geometric length. In heterogeneous soil slopes, there are strata with different physical and mechanical properties and lens bodies of various geometric shapes. The contact surface often has a weak shear strength value, and is often the place where the slip surface has been cut. This paper describes the formation mechanism of the slip surface in the heterogeneous soil slope, and gives a method for determining the center of the slip surface of the heterogeneous soil slope.