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[VI-893] Construction of NS-BOX Diaphragm Wall Type II in Gravel layer including boulder and cobblestone

*Kenji Kawagoe¹, Ami Ichimura¹, Hiroki Fujikawa², Ryo Arikawa², Haruka Fusho² (1. TAISEI CORPORATION, 2. Japan Railway Construction, Transport and Technology Agency)

Keywords:

NS-BOX Diaphragm Wall Type II,Direct Excavation of Gravel Layer,Excavation Accuracy,Core Material installation Accuracy