山岳トンネル (14)

[VI-316] Construction record of Japan's largest cross-section tunnel close to residential area

*Kennshirou Tanaka¹, keita igawa¹, keichi kaneko¹, atushi uneda¹, atushi hikawa¹, kaito shimizu¹, daisuke matsumoto², yutaro mine², kazuki yamazaki², wataru ueno² (1. KAJIMA CORPORATION, 2. East Nippon Expressway Company Limited)

Keywords:mountain tunnel, Ultra-large-section proximity tunnel, 2 nozzle spray machine, early closure, heavy equipment, tunnel face stability