基于正交试验的露天矿含断层边坡敏感性分析

随着露天矿的不断开采,形成的边坡高度较大,而且矿区的工程地质条件相对比较复杂,边坡在采动过程中的稳定性问题变得日益突出。尤其是大部分的露天矿都存在断层,使得边坡体的变形破坏机制及稳定性问题变得极为复杂,对矿山人员以及安全的生产产生很大的危害。因此,将正交试验和数值模拟相结合,选取断层厚度、断层倾角、断层黏聚力、断层内摩擦角及断层的露头处距边坡距离5个因素进行分析。最后对模拟的结果进行多因素方差和相关性分析,得出影响边坡稳定性的主导因素和相关性因素。结果表明,断层相关参数对含断层岩质边坡稳定的影响程度为:断层倾角影响程度最大,断层内摩擦角其次,断层黏聚力较小,断层厚度及其露头距离边坡的距离影响程度较小。

Based on orthogonal test sensitivity analysis in fault slope of open-pit mine

With the continuous mining of open pit mine, the formation of the slope height is bigger, the engineering geological conditions and mining area is relatively complex, the slope stability problem in the mining process has become increasingly prominent.Especially the fault is found in most of the open pit mine, the deformation failure mechanism and stability of the slope body problems become very complex, for mine personnel and safe production to produce a lot of harm.Therefore, in this paper, combining the orthogonal experiment and numerical simulation, fault thickness, fault dip Angle, fault cohesive force, internal friction Angle of fault and the fault outcrop of the distance from slope five factors are analyzed.Finally, the simulation results of multi-factor variance and correlation analysis, it is concluded that the dominant factors influencing the slope stability and correlation factors.Results show that the fault related parameters of fault the influence degree of the rock slope stability is: influence biggest fault dip, fault, internal friction Angle of the second fault cohesive force is small, the thickness of the fault degree minimum.