前言水工建筑物通常核算稳定,一般包括水平滑动、上浮和倾倒。土坝因自身重力很大,在一般基础上水平滑动及上浮是不可能的,土壤具有颗粒性及塑性,亦不需计算其倾倒。因此,土坝稳定计算,主要是检查坝坡或坝基土壤,是否会因剪应力超过土壤抗剪强度而发生可能的坍滑。近代土坝边坡稳定分析方法很多,其中最常见的为条分法与N.C.管脱纳创造的图解 Foreword Hydraulic structures are usually accounted for as stable and generally include horizontal sliding, floating and dumping. Earth dam because of its own great gravity, horizontal sliding and floating on the basis of the general is impossible, the soil has granularity and plasticity, do not need to calculate the dumping. Therefore, the stability calculation of earth dam is mainly to check the dam slope or dam foundation soil, and whether there will be any possible slump due to the shear stress exceeding the soil shear strength. There are many methods for the stability analysis of earth dam slope in modern times, the most common ones are the illustrations created by the strip method and N.C. tube detachment