抄録
The Higashi-roppongi station is a new station of the Namboku-line which is under construction by the Teito Rapid Transit Authority. And this new station is situated in proximity to the metropolitan expressway structures and worked in the ground with high groundwater levels. Therefore it has been planed to carry out the pre-excavation timbering by transverse diaphragm and the wet excavation for safety works. This report will examine these special methods and analyze influences on the adjacent expressway structures.
