一、前言圆弧滑动法是计算土石坝坝坡稳定的常用方法。通常是将每一个圆心、半径已定出的滑动体划分成有限个等宽铅直土条来计算。土条越多,虽越准确,但工作量越大,因此土条不能分得太多,这样,计算便有相当的近似性。本文用积分代替有限条分进行精确计算。 I. Introduction The arc slip method is commonly used to calculate the slope stability of earth-rock dam. Usually each center, radius has been set out of the slider is divided into a limited number of equal-width vertical soil to calculate. The more soil strands, though more accurate, but the greater the workload, so the soil can not be divided too much, so that the calculation will have a similar approximation. In this paper, integrals are used to replace finite ones for accurate calculation.