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若土坡为均质土构成,其物理性质指标土的容重γ和力学性质指标土的粘结力c和土的内摩擦角φ皆为常数。 如图1所示,AA’为坡面,设AB为一任意假定的可能滑动面,O为滑动圆弧的圆心,R为滑动圆弧的半径,AB以上的土体(ABA’A)为滑动土体,AB以下的土体为未滑动土体。 按平面应变问题取1米厚的滑动土体脱
If the slope is a homogenous soil, the physical property index soil bulk density γ and the mechanical property index soil adhesion force c and the soil internal friction angle φ are constant. As shown in Fig. 1, AA’ is the slope surface, AB is an arbitrary assumed possible sliding surface, O is the center of the sliding arc, R is the radius of the sliding arc, and the soil above AB (ABA’A) is Sliding soil, soil below AB is unsoiled soil. Take 1 meter thick sliding soil as plane strain problem