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边坡工程中,结构面抗剪强度是非常重要的力学参数,合理地选择确定抗剪强度的方法,常常要分析c、φ值在边坡稳定中的作用。根据极限平衡原理,对10~30m高的平面滑动型边坡不同抗剪强度的控稳结构面c、φ值在边坡稳定中的作用进行了定量分析。研究表明c值对稳定系数的影响随坡高增大逐渐减弱,φ值对稳定系数的影响随坡高增大逐渐增强。得到了不同坡高下c、φ值边坡稳定作用等值曲线,该曲线很容易确定抗剪强度参数c、φ值在边坡稳定中的作用。
In the slope engineering, the shear strength of the structural plane is a very important mechanical parameter, and the method of determining the shear strength is selected reasonably. It is often necessary to analyze the role of c and φ in the slope stability. According to the principle of limit equilibrium, the effects of the c, φ values of the stable structures with different shear strengths of 10 ~ 30m high plane sliding slopes on slope stability are quantitatively analyzed. The results show that the influence of c value on stability coefficient decreases with the increase of slope height. The effect of φ value on stability coefficient increases with the increase of slope height. Equivalent curves of the stability of c, φ slope under different slope height are obtained. The curve can easily determine the role of shear strength parameter c, φ in slope stability.