2023
DOI: 10.1144/qjegh2023-019
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Analysis of the impact of groundwater-level decrease caused by drainage on tunnel water inflow

Abstract: Affected by the excavation, the phenomenon of groundwater level drop around mountain tunnels is widespread, resulting in poor accuracy of the existing water inflow calculation formula derived when the groundwater level is fixed. Based on this, a simplified calculation model of tunnel water inflow is constructed when considering drainage, and the tunnel water inflow is calculated according to the Dupuit assumption and conformal transformation. The law of conservation of fluid mass is used to solve the equivalen… Show more

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