半径の異なる三連型シールドの止水実験について

抄録

There are four hollow parts in the cross section of the three-centered shield tunnel and the rubber gasket for cut-off of water at the tunnel entrance is pulled up around these parts because of the tension in the gasket.
Application of the rubber tube which is expanded by pumping up and press the gasket against the skin plate of tunnel structure has been attempted in order to improve the waterproofing performance of the gasket and the model test has been carried out to examine the performance of the method.