Japan Society of Civil Engineers 2025 Annual Meeting
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Session Details

Oral PresentationSection VI

山岳トンネル(2)

Thu. Sep 11, 2025 11:10 AM - 12:30 PM JST
Thu. Sep 11, 2025 2:10 AM - 3:30 AM UTC
225
11:10 AM - 11:20 AM JST(2:10 AM - 2:20 AM UTC)

[VI-607]Report on the Tunnel with fragile ground with irregular distribution of the degree of alteration

*Yilun Chu1, Ryoichi asaumi1, Kenichi Adachi1, Michinari Nakano2, Otsubo Yoshihiro2 (1. Shimizu Corporation, 2. Miyazaki Prefecture Kobayashi Office of Public Works)
11:20 AM - 11:30 AM JST(2:20 AM - 2:30 AM UTC)

[VI-608]A consideration on tunnel excavation in degenerated andesite

*Kazufumi Takayama1, Daiyuu Nakagawa1, Naoto Yoshino1, Takehiro Kanii1 (1. TODA CORPORATION)
11:30 AM - 11:40 AM JST(2:30 AM - 2:40 AM UTC)

[VI-609]Deformations and Countermeasures in Tunnel Excavation Through Weak Mudstone Layers Confined between Chert Layers

*Takahito Funahashi1, Sotaro Tsujimoto1, Jyunji Uno1, Norimi Tanaka1, Kouji Mori1, Fujio Sushida1, Kosuke Oyamada2, Atsuo Ootsuki2 (1. TEKKEN CORPORATION, 2. Central Nippon Expressway Company Limited)
11:40 AM - 11:50 AM JST(2:40 AM - 2:50 AM UTC)

[VI-610]Construction Report on Mountain Tunnel Works in Geological Formation with White Tuff Distribution

*Taisei Tokuda1, Tetsuya Terada2, Kenichi Sawada2, Satoshi Ishizu1, Youichi Mizobata1 (1. OKUMURA CORPORATION, 2. Kinki Regional Development Bureau Ministry of Land, Infrastructure, Transport and Tourism)
11:50 AM - 12:00 PM JST(2:50 AM - 3:00 AM UTC)

[VI-611]Study and verification of excavation of the box area for emergency equipment in tunnel with poor geology.

*Suguru Okawara1, Youhei Yamaguchi1, Naoki Ikushima1, Hideaki Mikami1 (1. TODA CORPORATION)
12:00 PM - 12:10 PM JST(3:00 AM - 3:10 AM UTC)

[VI-612]Countermeasures for Support Deformation by Early Closure in Tunneling through Poor Ground Conditions

*Shinnosuke Usui1, Hiroshi Ookubo1 (1. MAEDA CORPORATION)
12:10 PM - 12:20 PM JST(3:10 AM - 3:20 AM UTC)

[VI-613]Construction results of countermeasures for tunnel breakthrough in landslide-prone terrain.

*Ryota Ino1, hirohumi nishigaki1, yoshiki nunozaki2 (1. MAEDA CORPORATION, 2. Kinan office of river and national highway)
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