求翻译：（3）在模型中，不同的位置处初始有效应力和剪应力不同而导致地震过程中四个单元产生不同的应力路径和应力应变状态，处于前墙后回填土区域，震前震后剪应力、剪应变有明显的增大，导致孔隙水压力的快速发展，从而达到液化状态。是什么意思？

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(3) in the model, the different position initial actual stress and the shearing stress different causes in the earthquake process four units to have the different stress way and the stress strained condition, after is in the front wall to return to the earth fill region, after shakes the fore-runner

(3) in the model, where different primitive effective stress and shear stress caused earthquakes during the four different units have different stress paths and stress-strain State in backfill area when the front wall, before earthquake earthquake shear stress and shear strain had a significant incr

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