“多用求积仪”为笔者设计的一种新型测绘仪器。除具有普通求积仪测量各种不规则图形面积的功能外,同时具有测定相应图形形心之功能。本文主要论述利用“多用求积仪”结合图解法求解土坡稳定。本法既可弥补传统“条分法”在理论上所存在的缺陷,又可提高精确 “Multi-purpose planimeter” is a new type of surveying and mapping instrument designed by the author. In addition to the function of the ordinary planimeter to measure various irregular pattern areas, it also has the function of measuring the corresponding figure centroid. This article mainly discusses the use of “multiple-planning instrument” combined with graphic method to solve the slope stability. This law can make up for the theoretical flaws in the traditional “score method” and increase the precision.