Abstract

AbstractExisting underground structure may block the water flow or extend the seepage path, which should affect the groundwater response induced by pumping. In this study, finite element models are established by ABAQUS, based on a practical pre-excavation pumping test in Tianjin, to investigate the influence of existing underground structure on seepage flow under pumping. It is found that the existing underground structure has barrier effect in pumping. In addition, the effect of the spacing between the existing structure and the excavation on the groundwater response was revealed. This study can provide guidance for the design of groundwater recharge.KeywordsExisting underground structurePumpingBarrier effectGroundwater drawdownNumerical simulation

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