Japan Society of Civil Engineers 2025 Annual Meeting
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Session Details

Oral PresentationSection VI

シールドトンネル(3)

Thu. Sep 11, 2025 1:30 PM - 2:50 PM JST
Thu. Sep 11, 2025 4:30 AM - 5:50 AM UTC
E205
1:30 PM - 1:40 PM JST(4:30 AM - 4:40 AM UTC)

[VI-259]Estimation of the amount of additive material dislodged in earth pressure shield using tracers (2)
- Tracer concentration in additives and selection of tracer materials -

*Kotaro Kajikawa1, Takayuki Nakaoka1, Toshihiko Ito1, Eisuke Kawashima2 (1. Okumura Corporation, 2. Mohican Technology)
1:40 PM - 1:50 PM JST(4:40 AM - 4:50 AM UTC)

[VI-260]Estimation of the deviation amount of additive material in earth pressure balanced shield using tracers (2)
- Field experiment -

*Takayuki Nakaoka1, Kotaro Kajikawa1, Mamoru Suzuki1, Eisuke Kawashima2 (1. Okumura Corp., 2. Mohican Technology)
1:50 PM - 2:00 PM JST(4:50 AM - 5:00 AM UTC)

[VI-261]Additive Mixing Test for Gravel Layer Ground Containing Large Boulders.

*Yuichi Okubo, Shigetsugu Furuta1, Koki Matsuda1, Kosuke Nomoto1, Shinya Tsurumaki1, Koji Okamoto1, Yoshinori Kikuchi2, Takayuki Suda2 (1. MAEDA CORPORATION, 2. Central Japan Railway Company)
2:00 PM - 2:10 PM JST(5:00 AM - 5:10 AM UTC)

[VI-262]Mixing Tests Result and Evaluation Method of Condition of Mud Additives for EPB Shield in Cohesive Soil with Small Nature Moisture Content and High Liquid Limit

*Yuzuka Oka1, Katsutoyo Yasui1, Yousuke Shimo2, Nobuhiko Oka2, Tsubasa Nishikawa2 (1. Shimz-Takenakadoboku-Toa JV, 2. Shin-Meishin Osaka East Office, Kansai Branch, West Nippon Expressway Company Limited)
2:10 PM - 2:20 PM JST(5:10 AM - 5:20 AM UTC)

[VI-263]Applicability of Additives for EPB Shields in Cohesive Soil Ground with Low Natural Water Content and High Liquid Limit

*Yuna Sato1, Ryoma Takemoto1, Katsutoyo Yasui1, Yosuke Shimo2, Nobuhiko Oka2, Tsubasa Nishikawa2 (1. Shimz・TakenakaDoboku・Toua JV, 2. Shin-Meishin Osaka East Office, Kansai Branch, West Nippon Expressway Company Limited)
2:20 PM - 2:30 PM JST(5:20 AM - 5:30 AM UTC)

[VI-264]Development of Neutral Solidification Materials for Reclamation of High Water Content Soil in EPB shield

*Ryoma Takemoto1, Katsutoyo Yasui1, Yosuke Shimo2, Nobuhiko Oka2, Tsubasa Nishikawa2 (1. Shimizu・Takenaka doboku・Toa JV, 2. West Nippon Expressway Company Limited Kansai branch Shinmeishin Osaka Higashi Office)
2:30 PM - 2:40 PM JST(5:30 AM - 5:40 AM UTC)

[VI-265]Development of a polymeric improver that can efficiently improve muddy soil

*Yukinobu Kimura1, TOSHIHIKO MIURA1 (1. OBAYASHI Corporation)
2:40 PM - 2:50 PM JST(5:40 AM - 5:50 AM UTC)

[VI-266]Development of an Aggregation-Resistant Stabilizing Fluid for the Slurry Shield Tunneling

*Kazuya Andy Iwahana1, ISSEI SATO1, Yuya Obayashi1, Naoko Shimmoto1, Toichiro Nomura2, Mitsuru OyaOya2, Kiyohiro Nagaoka3, Jon Suzuki3, Go Hirayama4 (1. KAJIMA CORPORATION, 2. HOJUN Co.,Ltd, 3. BENSUN Co.,Ltd, 4. Ube Materials Co.,Ltd)
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