In tunnel construction method, although there are cases impact on the surrounding environment due to groundwater level fluctuations caused by the construction becomes a problem is found, these reports on the inhibitory effect of groundwater measures and ground surface subsidence amount is small, about the relationship between the two is not yet elucidation part often. In this study, with groundwater level change and the earth surface subsidence is analyzed on the basis of the construction data in Masa of the bedrock, we discuss the behavior mechanism. In addition, we studied by the basic and the ground subsidence analysis technique the flow analysis, we discuss its applicability.

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