The crust is constituted by the rock and a surface layer of soil with depth H over it. The incident seismic wave is a vertical SH shear wave to cause horizontal ground motion.

地壳由半无限大的基岩上一层厚度为H的表土层组成，入射地震波为垂直的SH波，产生水平地面运动。

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In the actual project, the nature of the soil layer is not uniform, but varies with horizontal and vertical direction.

在实际工程中，土层的性质并非是均匀的，而是沿水平和竖向变化的。

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Finally grounding resistance and soil resistivity are measured under the condition of two-layer horizontal soil, and the model is proved to be reasonable.

实验测量了两层水平分层土壤结构下的接地电阻和土壤电阻率，证实了土壤分层模型的有效性和可靠性。

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