Abstract Earthquakes are the main cause of slope failure in seismic active regions. In this study, we present a method for analyzing the seismic stability of a plane jointed rock slope with two blocks. In this analysis, the Barton-Bandis failure criterion is applied, considering the nonlinear characteristics of rock joints. Based on the limit equilibrium principle, we derived the safety factor of a jointed rock slope subjected to the modified pseudo-dynamic seismic forces. In addition, the analytical method developed in this study explains the interaction force between two blocks. Hence, it can effectively analyze the stability of a jointed rock slope and distinguish the failure modes. Further, a parametric study was conducted to investigate the effects of geometric and material properties on the safety factor of a hypothetical slope. The results show that the slope stability is significantly influenced by the geometry of the slope and the parameters including the joint roughness coefficient JRC, the horizontal seismic acceleration coefficient kh, the joint compressive strength JCS, and the basic friction angle of the structural plane ϕb. Moreover, the accuracy of the derivation is verified by the universal distinct element code UDEC 6.0. A parametric sensitivity analysis is used to determine the key parameters affecting slope stability. Finally, a set of seismic stability design charts is produced for preliminary design.

中文翻译：

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基于Barton-Bandis破坏准则的节理岩质边坡地震稳定性分析方法

摘要 地震是地震活动区边坡破坏的主要原因。在这项研究中，我们提出了一种用于分析具有两个块体的平面节理岩石边坡的地震稳定性的方法。在该分析中，考虑到岩石节理的非线性特性，应用了 Barton-Bandis 破坏准则。基于极限平衡原理，推导出了节理岩质边坡在修正拟动力地震力作用下的安全系数。此外，本研究中开发的分析方法解释了两个块之间的相互作用力。因此，它可以有效地分析节理岩质边坡的稳定性并区分破坏模式。此外，还进行了参数研究，以研究几何和材料特性对假设斜坡安全系数的影响。结果表明，边坡稳定性受边坡几何形状和节理粗糙度系数JRC、水平地震加速度系数kh、节理抗压强度JCS、结构面基本摩擦角φb等参数影响显着。此外，推导的准确性由通用独特元素代码 UDEC 6.0 验证。参数敏感性分析用于确定影响边坡稳定性的关键参数。最后，制作了一套用于初步设计的抗震稳定性设计图。和结构面的基本摩擦角 ϕb。此外，推导的准确性由通用独特元素代码 UDEC 6.0 验证。参数敏感性分析用于确定影响边坡稳定性的关键参数。最后，制作了一套用于初步设计的抗震稳定性设计图。和结构面的基本摩擦角 ϕb。此外，推导的准确性由通用独特元素代码 UDEC 6.0 验证。参数敏感性分析用于确定影响边坡稳定性的关键参数。最后，制作了一套用于初步设计的抗震稳定性设计图。