In the unloading process, with the increase of deviator stress and the strain, the soil sample took on a dilatancy trend and showed a large negative pore pressure.

• 在卸荷过程中，随剪切应力的增大和剪切应变的发展，土样呈现剪胀趋势并在后期产生较大的负孔隙水压力。