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基于极限平衡理论,综合考虑水力条件、坡顶超载、地震荷载效应和锚固效应对岩石边坡进行了全面的稳定性分析。计算给出了多影响因素条件下岩石边坡稳定性安全系数的表达式,并重点分析了几种相关参数组合对岩石边坡稳定性的影响。分析表明,坡顶张拉裂缝积水、地下水渗流作用、滑面出流缝被堵塞、地震影响效应不利于岩石边坡抗滑稳定性,而锚索锚固效应则对提高边坡抗滑稳定性有积极作用;坡顶张拉裂缝积水、滑面出流缝被堵塞、水平向地震影响效应都不利于岩石边坡抗倾覆稳定性,但锚索锚固效应、坡顶超载、与竖直方向地震效应则对提高边坡抗倾覆稳定性有益。最后针对工程实际,提出了相应的工程建议。
Based on the theory of limit equilibrium, a comprehensive stability analysis of rock slope is carried out considering hydraulic conditions, overloading of slope, earthquake load effect and anchorage effect. The expression of the safety factor of rock slope stability under multiple influencing factors is given and the influence of several related parameters on the stability of rock slope is analyzed. The analysis shows that the effect of earthquake is not conducive to the stability of rock slope, but the anchor effect of anchor cable is not good for improving the stability of slope. Which has a positive effect. The water leakage on the top of the slope cracks and the runoff of the slip surface is blocked, and the horizontal seismic effect is not conducive to the anti-overturning stability of the rock slope. However, the anchor cable anchoring effect, Seismic effects are beneficial to improve the stability of slope anti-overturning. Finally, according to the actual project, put forward the corresponding engineering proposal.