Based on the unsaturated soil strength theory and limit equilibrium method, this paper obtains the calculating formulae for the roadbed stability under the effect of seepage force of rain.
采用非饱和土强度理论和极限平衡法，得出考虑降雨入渗渗流力作用下的路基稳定性计算公式。
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At the same time, reinforcing the seepage control of slope and reducing the infiltration of rain on slope could effectively improve the stability of slope.