When confined aquifer under the bottom of the pit, the foundation excavation will reduce the thickness of overlying impermeable layer.

在基坑底部以下存在承压水层的情况下，基坑开挖减少含水层上覆不透水层的厚度。

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Above all, the effects of some parameters on the settlement are studied, such as the thickness, modulus of the overlaying soil, head difference and transmissibility of the confined aquifer.

讨论了上覆土层厚度、上覆土层弹性模量、承压水水头降深和承压层导水系数对沉降的影响。

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