结构面影响下的岩质边坡稳定性计算方法探讨

岩质边坡的稳定性主要受岩体内结构面的控制，研究含节理岩质边坡的稳定性分析方法具有重要的理论意义和工程价值。以工程实例为背景，首先，基于现场测试和室内试验，给出了岩石和结构面计算参数的取值过程和方法；其次，基于强度折减理论，运用FISH语言编写了强度折减程序，并把其推广应用到Ubiquitous-Joint模型中；再次，提出了用薄层材料来模拟结构面，进而运用极限平衡计算出结构面作用下边坡安全系数的方法。最后，分别运用有限差分法、离散单元法和极限平衡法计算了含1组优势结构面的岩质边坡的稳定性，计算结果显示3种方法计算的边坡安全系数以及潜在破坏模式具有一致性。研究成果为类似工程边坡的稳定性评价提供了有效的方法。

Discussion on Stability Calculation Method of Rock Slope Containing Discontinuities

The stability of rock slope is mainly controlled by discontinuities of rocks.Studying the stability analysis method of jointed rock slope possesses important theoretical significance and engineering value.With the engineering case as background，the processes and methods of calculation parameters of rock and discontinuities are firstly given through field tests and laboratory tests.Secondly，based on the strength reduction theory，the strength reduction program is written using FISH language and it is applied to the Ubiquitous-Joint Model.Thirdly，the method that thin layer of material is used to simulate rock discontinuities is proposed and then the limit equilibrium method is applied to calculate the slope safety factor.Finally，the stability of rock slope containing a set of preferred structure plane is calculated respectively by the finite difference method，the discrete element method and the limit equilibrium method.The calculated results show that the slope safety factors by the three methods above and the potential failure mode are consistent.The research findings provide effective methods to make the stability evaluation of similar slope projects.