In order to propose a new method for determining the critical slip surface of the cohesive soil slope, the relational expression between the number of simple penetration and slope bearing capacity is established on the basis of studying the principle of the simple penetration test with reference to the research result concerning the number of standard penetration and bearing capacity of foundation soil. The measuring points are arranged at the slope of a certain road slope according to the actual conditions, to measure the number of simple penetration, calculate the slope bearing capacity at different depths with the relational expression, draw the curve of slope bearing capacity changing with the depth, search the points of abrupt change in slope bearing capacity to get the arc curve of abrupt change points, and then determine the critical slip surface of slope. The test results are compared with the results calculated by the finite element method (FEM) and theoretical method, to verify the feasibility and rationality of the simple penetration method. The research results show that the simple penetration method is applicable to and capable of quick and accurate determination of critical slip surface of the cohesive soil slope, thus providing a new method for analyzing the slope stability of cohesive soil.

中文翻译：

---

基于简单渗透试验原理确定粘性土边坡临界滑移面的方法

为提出一种确定粘性土边坡临界滑移面的新方法，在研究简单贯入试验原理的基础上，建立了简单贯入次数与边坡承载力的关系式。地基土的标准贯入数和承载力研究成果[J]. 根据实际情况，将测点布置在某一道路边坡的边坡上，测量单穿次数，用关系式计算不同深度的边坡承载力，绘制边坡承载力随坡度变化的曲线。深度，搜索边坡承载力突变点，得到突变点弧形曲线，然后确定边坡的临界滑移面。将试验结果与有限元法（FEM）和理论法计算的结果进行对比，验证了简单穿透法的可行性和合理性。研究结果表明，简单穿透法适用于粘性土边坡临界滑移面的快速准确测定，并能够快速准确地确定，为粘性土边坡稳定性分析提供了一种新方法。