土的抗剪强度是研究土力学的一个非常重要而且也是最基本的课题之一。无论确定地基的强度和稳定性,还是在处理和设计中常遇到的边坡稳定和挡土墙的压力等,都是以这一指标为基本参数的。但迄今为止,关于这一课题的研究还没有得到一个完善的结论。因此,有必要对这一课题深入研究,力求使土的抗剪强度这一力学指标在概念和理 The shear strength of soil is one of the most important and fundamental topics in the study of soil mechanics. Regardless of the determination of the strength and stability of the foundation, or the stability of the slope and the pressure of the retaining wall, which are often encountered in the treatment and design, this index is taken as the basic parameter. But so far, research on this topic has not yet reached a perfect conclusion. Therefore, it is necessary to conduct in-depth research on this subject and strive to make the mechanical strength index of the soil the concept and reason.