開削トンネル・各種基礎 (1)

[VI-882] Construction results of down-the-hole construction method using hole wall protection by construction in expressway work zone

*Toru Kodama¹, Yoshimasa Yamamoto¹, Yasuo Kuraishi¹, Kazuhiko Maegawa², Ayano Kobayashi², Osamu Yoshimoto³ (1. KAJIMA CORPORATION, 2. Central Nippon Expressway Company Limited, 3. Kochi Marutaka Co., Ltd.)

Keywords:hole wall protection, Highway proximity work, vibro hammer, Down-the-hole hammer method