Development of advanced measurement techniques and numerical analysis for surface failure of slopes during torrential rainfall (guerrilla-like rainfall)

• Project/Area Number: 22760357
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Geotechnical engineering
• Research Institution: Kyoto University
• Principal Investigator: KOYAMA Tomofumi 京都大学, 大学院・工学研究科, 助教 (20467450)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 地盤の挙動 / ゲリラ豪雨 / 雨水浸透 / 斜面 / リアルタイム・モニタリング / サンドカラム試験 / 数値解析 / 統合型地下水解析 / 応力・浸透連成解析 / 応力-浸透連成挙動

Research Abstract

In this study, more advanced measurement technique for accurate estimation of rainfall profiles and water mass balance in slopes during torrentialrainfall (so-called guerrilla-like rainfall) was developed to investigate the mechanism of rainfall infiltration and rainfall-induced surface failure. The advanced numerical simulation tools were also developed to evaluate the slope stability and simulate the slope failure/collapse processes during torrential rainfall. The newly developed numerical simulation tools were applied to the real surface failure in the slope and their validity was investigated.

Research Products

• [Journal Article] Experimental and numerical studies on rainwater infiltration mechanism during torrential rainfall (2013)
  • Author(s): Koyama, T., Nagano, K., Kim, S., Lee, K and Ohnishi, Y
  • Journal Title: Caspian Journal of Applied Sciences Research Volume: 2 Pages: 440-448
  • Peer Reviewed
• [Journal Article] Numerical simulations for rainfall induced slope failure -rainwater infiltration mechanism and evaluation of slope stability during torrential rainfall (2013)
  • Author(s): Nakamura, H., Koyama, T., Lee, K., Yamada, M. and Ohnishi, Y
  • Journal Title: Caspian Journal of Applied Sciences Research Volume: 2 Pages: 431-439
  • Peer Reviewed
• [Journal Article] A numerical study on the effect of shear resistance on the landslide by Discontinuous Deformation Analysis (DDA) (2012)
  • Author(s): Irie, K., Koyama, T., Nishiyama, S., Yasuda, Y. and Ohnishi, Y
  • Journal Title: Geomechanics and Geoengineering, an International Journal Volume: 7(1) Issue: 1 Pages: 57-68
  • DOI: 10.1080/17486025.2011.578672
  • Peer Reviewed
• [Journal Article] Application of Manifold Method (MM) to the stability problem for cut slope along the national roads (2012)
  • Author(s): Koyama, T., Ohnishi, Y., Miki, S., Nakai, T., Maruki, Y., Yagi, K. and Kobayashi, T.
  • Journal Title: Geomechanics and Geoengineering,An International Journal Volume: 7 Issue: 1 Pages: 39-56
  • DOI: 10.1080/17486025.2011.578671
  • Peer Reviewed
• [Journal Article] Real-time slope water table forecasting by multi-tank model combined with dual ensemble Kalman filter (2011)
  • Author(s): Xiong, J., Koyama, T., Nisiyama, S., Ohnihsi, Y., Takahashi, K
  • Journal Title: Landlsides Volume: 8(1) Pages: 81-89
  • Peer Reviewed
• [Journal Article] 斜面における統合型地下水解析法の開発およびその実斜面への適用 (2010)
  • Author(s): 小山倫史,高橋健二,大西有三
  • Journal Title: 地盤工学ジャーナル Volume: 5(1) Pages: 103-118
  • Peer Reviewed
• [Journal Article] ゲリラ豪雨による斜面安定性評価のためのリアルタイム雨量計の開発 (2010)
  • Author(s): 小山倫史,高橋健二,西川啓一,大西有三
  • Journal Title: 地盤工学ジャーナル Volume: 5(1) Pages: 61-67
  • NAID: 130004482807
  • Peer Reviewed
• [Presentation] 豪雨時の雨水浸透および表層崩壊のメカニズム解明のための解析的研究 (2012)
  • Author(s): 中村秀樹,小山倫史,李圭太,山田雅義,河島信義,森井和弘,大西有三
  • Organizer: 第47回地盤工学研究発表会
  • Place of Presentation: 八戸
• [Presentation] Experimental and numerical studies on rainwater infiltration mechanism during torrential rainfall (2012)
  • Author(s): Koyama, T., Nagano, K., Kim, S., Lee, K and Ohnishi, Y
  • Organizer: Geohazard Information Zonation (GIZ’12)
  • Place of Presentation: Penang, Malaysia
• [Presentation] Numerical simulations for rainfall induced slope failure –rainwater infiltration mechanism and evaluation of slope stability during torrential rainfall (2012)
  • Author(s): Nakamura, H., Koyama, T., Lee, K., Yamada, M. and Ohnishi, Y.
  • Organizer: Geohazard Information Zonation (GIZ’12)
  • Place of Presentation: Penang, Malaysia
• [Presentation] DDA simulation for slope failure/collapse experiment caused by torrential rainfall (2011)
  • Author(s): Koyama T., Irie K., Nagano K., Nishiyama S., Sakai N., Ohnishi Y.
  • Organizer: the 10th International Conference on Analysis of Discontinuous Deformation (ICADD10)
  • Place of Presentation: Hawaii, USA
  • Year and Date: 2011-12-07
• [Presentation] ゲリラ豪雨時における地盤の雨水浸透挙動に関する研究 (2011)
  • Author(s): 金秀〓,小山倫史,長野航兵,李圭太,大西有三
  • Organizer: 地盤の環境・計測技術に関するシンポジウム2011
  • Place of Presentation: 大阪
  • Year and Date: 2011-11-11
• [Presentation] ゲリラ豪雨時における地盤の雨水浸透挙動に関する研究 (2011)
  • Author(s): 金秀娟, 小山倫史, 長野航兵, 李圭太, 大西有三
  • Organizer: 地盤の環境・計測技術に関するシンポジウム2011
  • Place of Presentation: 地盤工学会監視支部(大阪)
  • Year and Date: 2011-11-11
• [Presentation] 不連続変形法による降雨に起因する斜面崩壊の予測解析 (2011)
  • Author(s): 入江敬, 小山倫史, 酒井直樹, 西山哲, 安田祐樹, 大西有三
  • Organizer: 第40回岩盤力学に関するシンポジウム
  • Place of Presentation: 土木学会(東京)
  • Year and Date: 2011-01-13
• [Presentation] DDA simulation for slope failure/collapse experiment caused by torrential rainfall. In: Advances in Discontinuous Numerical Methods and Applications in Geomechanics and Geoengineering (2011)
  • Author(s): Koyama, T., Irie, K., Nagano, K., Nishiyama, S., Sakai, N. and Ohnishi, Y.
  • Organizer: Proc. of the 10th International Conference on Analysis of Discontinuous Deformation (ICADD10)
  • Place of Presentation: Hawaii, USA
• [Presentation] ゲリラ豪雨時の雨滴サイズを考慮したサンドカラム雨水浸透試験 (2011)
  • Author(s): 金秀〓,小山倫史,長野航兵,李圭太,大西有三
  • Organizer: 土木学会第66回年次学術講演会
  • Place of Presentation: 愛媛
• [Presentation] 不連続変形法による降雨に起因する斜面崩壊の予測解析 (2011)
  • Author(s): 入江敬,小山倫史,酒井直樹,西山哲,安田祐樹,大西有三
  • Organizer: 第40回岩盤力学に関するシンポジウム
  • Place of Presentation: 東京
• [Presentation] ゲリラ豪雨による斜面安定性評価のためのリアルタイム雨量計の開発 (2010)
  • Author(s): 小山倫史
  • Organizer: 第55回地盤工学シンポジウム
  • Place of Presentation: 地盤工学会(東京)(招待講演)
  • Year and Date: 2010-11-25
• [Presentation] 豪雨時における斜面の雨水浸透特性に関する解析的研究 (2009)
  • Author(s): 長野航兵,小山倫史,李圭太,大西有三
  • Organizer: 土木学会第64回年次学術講演会
  • Place of Presentation: 福岡
• [Presentation] 斜面勾配が豪雨時の雨水浸透特性に与える影響に関する一考察 (2009)
  • Author(s): 小林猛嗣,小山倫史,長野航兵,李圭太,大西有三
  • Organizer: 第44回地盤工学研究発表会
  • Place of Presentation: 横浜
• [Presentation] 豪雨時における不飽和特性に着目した斜面の浸透特性に関する解析的研究 (2009)
  • Author(s): 李圭太,小山倫史,長野航兵,秋場俊一,大西有三
  • Organizer: 第44回地盤工学研究発表会
  • Place of Presentation: 横浜