試験法・調査法②

2:10 PM - 2:20 PM JST(5:10 AM - 5:20 AM UTC)

[III-305] Verification of successive accuracy improvements of long distance survey ahead of the tunnel face

*Masahito Yamagami¹, Moeru Kojima¹, Nobuhiro Asai², Hayao Tanabe², Kazunori Murata³ (1. TAISEI CORPORATION Taisei Advanced Center of Technology, 2. TAISEI CORPORATION Shikoku branch, 3. Suncoh Consultants, Co., Ltd)

Keywords:

mountain tunnel,long distance survey ahead of the tunnel face,T-BEP,successive accuracy improvements