Abstract In order to solve the water inflow problem during construction of the metro cross passage, the process,
causes of water inflow and countermeasures were described by taking the Nanning metro as an example. The results show that the safety of tunnel and work face of cross passage are ensured by adopting the treatment measures of water leakage drainage, sandbag backfilling, dewatering, grouting at ground and inside of tunnel and segment support installation.
Keywords ：
Metro Cross passage Excavation Water inflow Water blocking Countermeasure
Abstract ：
In order to solve the water inflow problem during construction of the metro cross passage, the process,
causes of water inflow and countermeasures were described by taking the Nanning metro as an example. The results show that the safety of tunnel and work face of cross passage are ensured by adopting the treatment measures of water leakage drainage, sandbag backfilling, dewatering, grouting at ground and inside of tunnel and segment support installation.
Keywords ：
Metro Cross passage Excavation Water inflow Water blocking Countermeasure
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2019, Vol. 56 