露天矿预应力锚索抗滑桩支护参数敏感性分析

Sensitivity Analysis on Supporting Parameters of Pre-stressed Anchor with Anti-Slide Pile in Surface Mine

为了提高预应力锚索抗滑桩的支护效果,采用数值模拟方法研究其敏感性,计算了锚索抗滑桩锚固深度、锚索抗滑桩倾斜角度、锚固角度、锚固长度及锚固位置5个因素对滑坡稳定性的影响,并对各因素的敏感性进行排序,影响程度从大到小依次为锚索锚固位置、抗滑桩倾斜角度、锚索锚固角度、锚索锚固长度、抗滑桩锚固深度。研究结果可为预应力锚索抗滑桩设计参数的选择提供参考。

In order to improve support effect of pre- stressed anchor anti- sliding pile,a numerical simulation method was applied to study the sensitivity and calculate anchoring depth of anchor anti- sliding,the inclined angle of anti- sliding pile,anchoring angle,anchoring length and anchoring location factors affected to landslide stability. The sensitivity of each factor were sorted,the descending order of influence degree was anchorage location,pile inclination angle,anchorage angle,anchorage length,pile anchoring depth. The study results could provide references to the selection on the design parameters of the pre- stressed anchor anti- sliding pile.