铁路路堤高边坡稳定性三维数值模拟分析

以云南省祥云县水目山铁路专用线工程为研究背景，针对场坪中的高填方和边部的桩基托梁挡土墙对周围石油管道的影响，利用有限元强度折减法进行数值计算分析。结果表明:高填方段对石油管道产生的附加水平应力为1.70～7.55 kPa，水平位移为0.53～2.10 cm；场坪边坡安全系数为1.35，潜在滑动面在石油管道另一侧，同时桩基托梁挡土墙段填方对石油管道产生的附加水平应力为7.58～17.99 kPa，水平位移为0.55～1.84 cm，安全系数为1.80，可得出水目山货场对石油管道影响较小，边坡也较为安全。

Three-dimensional Numerical Simulation of High Slope Stability of Railway Embankment

Based on the engineering of Shuimushan special railway line in Xiangyun County, Yunnan Province, the research aimed at the influences of petroleum pipeline caused by the high embankment and retaining wall on supported beams of pile foundation and carried out numerical calculation analysis using finite element strength reduction method. It is indicated that in the high embankment region the additional horizontal stress at the petroleum pipeline is about 1.70~7.55 kPa, the horizontal displacement is about 0.53~2.10 cm, the safety factor of slope is about 1.35, and the potential sliding surface is on the other side; in the pile foundation beam region, the additional horizontal stress at the petroleum pipeline is about 7.58~17.99 kPa, the horizontal displacement is about 0.55~1.84 cm, the safety factor is 1.80, which can come to a conclusion that the influence of the engineering is small and the slope is with high safety.