本文还分析了压弯刚度对拱推力的影响，指出忽略拱的轴向压缩变形的影响，可导致推力的计算误差达到30%。

This paper also analyses the bending stiffness of arch, points out that the thrust of the neglect of axial compression deformation, can lead to thrust calculation error 30%.

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笔者针对二滩电站坝区存在的高地应力现象，从初始地应力场的建立、施工开挖的时空效应，直到与拱推力等外荷载共同作用下对坝基岩体稳定的影响全过程进行了分析和计算。

For high in situ stress occurred in Ertan dam area, combined action of initial in situ stress field, time and space effect during excavation and external loads arch thrust etc.

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