A new three-dimensional shear-strength criterion (3DSSC) considering the three-dimensional (3D) roughness of rock joints and the internal friction angle of rock masses is discussed. Two methods for transforming the parameters of the 3DSSC into the linear Mohr–Coulomb failure criterion parameters are proposed. The calculation method of the anti-sliding safety coefficient of a rock slope controlled by a single anchored rock joint is derived, and anchoring parameter analysis is carried out. Compared with the equivalent linear fitting method and tangent equivalent method for obtaining the Mohr–Coulomb shear-strength parameters, the 3DSSC can be directly applied to calculate the rock slope stability controlled by a single rock joint. The change in the characteristics of the anti-sliding safety coefficient of the slope with the changes in the 3D roughness parameters, shear rate, and internal friction angle are discussed. The sensitivity of these factors to the slope stability is analyzed. It is suggested that for rock slopes with high roughness and a small internal friction angle, the weakening effect of the anchoring force angle on the anti-sliding stability of the slope should be taken into account.

中文翻译：

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基于岩石节理的峰值抗剪强度准则的锚固边坡稳定性分析

讨论了一种新的三维抗剪强度准则（3DSSC），该准则考虑了节理的三维（3D）粗糙度和岩体的内摩擦角。提出了两种将3DSSC参数转换为线性Mohr-Coulomb破坏准则参数的方法。推导了单个锚固节理控制的岩质边坡抗滑安全系数的计算方法，并对锚固参数进行了分析。与获得Mohr-Coulomb剪切强度参数的等效线性拟合法和切线等效法相比，3DSSC可以直接应用于计算单个岩石节理控制的岩石边坡稳定性。讨论了随着3D粗糙度参数，剪切速率和内摩擦角的变化，边坡抗滑安全系数特性的变化。分析了这些因素对边坡稳定性的敏感性。建议对于高粗糙度，内摩擦角小的岩石边坡，应考虑锚固力角对边坡抗滑稳定性的弱化作用。