地下構造物(1)

[VI-128] The construction of a connecting passage just under the existing subway entrance

〇Tsutomu Otsuka¹, Norihiko Sato¹, Takehiko Itagaki², Mitsuhiro Tsuchiya² (1.Tokyo Metro Co.,Ltd., 2.NISHIMATSU CONSTRUCTION Co., Ltd.)

Keywords:Receiving existing entrance structure, Excavation through under existing structure, Cut and cover method, measurement management