volumetric deformation

The test results indicate that the modulus of deformation and the strength of samples are reduced by wetting, that slaking deformations consists of either slaking volumetric strain or slaking deviator strain and that the slaking deformation is reduced with compacting factor of the samples is increased.

取得的湿化变形试验成果表明，湿化使土样的变形模量和强度均有所降低；湿化变形不仅包括湿化体应变，而且包括湿化偏应变；

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The force of instantaneous steady seepage results in the vertical stretching of the foundation under geomembrane and the lateral compression, which make the foundation in the state of pure shear stress with small volumetric compressive deformation, thus, the foundation cannot be reinforced effectively.

瞬时稳定渗流体力使膜下地基竖向拉伸、侧向受压，接近纯剪切应力状态，体积压缩变形较小，难以有效地加固地基。

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