When the pile designsafetyfactor is small, the anti-slide strength of rock and soil is not fully exerted. The finite element method has some discrepancy with the traditional method.
当滑坡设计安全系数较小时，岩土体抗滑强度未得到充分发挥，有限元与极限分析法有一定差距；
2
Based on the experience, the calculated thrusts by the two methods are the same under general designsafetyfactor, indicating that the finite element method to calculate the pile thrust is feasible.
依据经验，在一般桩设计安全系数下，两者计算得出推力一致，表明有限元用于计算桩后推力是可行的。
3
The modelling must unify with the function and must adapt with the environment, we must consider the safetyfactor and examines of nc machine's appearance fully when we carry on the design.