机场堆石体道基边坡稳定性分析

针对某大型高填方机场堆石体边坡工程，研究了该堆石体路基边坡的稳定问题。根据堆石体材料的相关力学性质，确定其对应的强度参数，采用强度折减法和极限平衡法，建立有限元模型计算边坡稳定安全系数，获得了堆石体各材料参数和边坡设计条件对边坡稳定安全系数的影响。通过比较分析，强度折减法分析堆石体边坡稳定时，计算结果更为安全，并提出了针对该堆石体边坡设计安全符合控制要求的工况。

Analysis on Slope Stability of Rockfill Roadbed in Airport

In connection to a large high rockfill slope project in airport，the stability of the subgrade slope is studied.Referring to the mechanical properties of the rockfill materials，the intensive parameter corresponded is confirmed and，using methods of strength reduction and limit equilibrium，the finite element model is established for the purpose of calculating safety factor for slope stability，as a result，the parameters of the rockfill materials and the effect of slope design conditions on the safety factor for stability could be obtained.Through comparative analysis，the result calculated by means of strength reduction is proved to be more safe；and in connection to the rockfill slope design，the work condition under which the safety meets the requirement is proposed.