Triggering of landslides under extreme meteorological environment and landslide hazard mitigation

2013 Fiscal Year Final Research Report

• Project/Area Number: 23380084
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Forest science
• Research Institution: Kyoto University
• Principal Investigator: WANG Gonghui 京都大学, 防災研究所, 助教 (50372553)
• Co-Investigator(Kenkyū-buntansha): SUEMINE Akira 京都大学, 防災研究所, 准教授 (00109092) ; KAMAI Toshitaka 京都大学, 防災研究所, 教授 (10277379) ; MATSUURA Sumio 京都大学, 防災研究所, 教授 (10353856)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Keywords: 崩壊 / 地すべり / 土石流 / 異常気象 / 気圧 / 豪雨

Research Abstract

To understand the mechanism of landslides occurring during abnormal weather condition and then to develop a new evaluation approach of landslide hazard, we made field survey of some landslides recently occurred in Japan, set up a new monitoring system on a landslide, and also did laboratory tests. The main results could be summarized as follow. 1) Lowered air pressure during typhoon failed to reactivate a landslide, but affected the movement after the sliding was triggered by rainfall. 2) Localized shearing on unsaturated soil layers may result in the moisture transfer within the soil layer and then affect the shear behavior or stability. 3) Water repellency of the soil layer may greatly affect the initiation and movement mechanism of shallow landslides.

Research Products

• [Journal Article] Pore-pressure generation and fluidization in a loess landslide triggered by the 1920 Haiyuan earthquake (2014)
  • Author(s): Wang, G., Zhang, D., Furuya, G., Yang, J
  • Journal Title: China : A case study. Engineering Geology Volume: 174 Pages: 36-45
  • DOI: 10.1016/j.enggeo.2014.03.006
  • Peer Reviewed
• [Journal Article] Effect of pore water chemistry on undrained shear behaviour of saturated loess (2014)
  • Author(s): Zhang, F.Y., Wang, G., Kamai, T., Chen, W.W
  • Journal Title: Quarterly J. Engineering Geology and Hydrogeology Volume: (印刷中)
  • DOI: 10.1144/qjegh2013-085
  • Peer Reviewed
• [Journal Article] Mechanism of the slowmoving landslides in Jurassic red-strata in the Three Gorges Reservoir (2014)
  • Author(s): Miao, H., Wang, G., Yin K.L., Kamai, T., Li, Y.Y
  • Journal Title: China. Engineering Geology Volume: 171 Pages: 59-69
  • DOI: 10.1016/j.enggeo.2013.12.017
  • Peer Reviewed
• [Journal Article] Some fluidized landslides triggered by the 2011 Tohoku Earthquake(M9.0) (2014)
  • Author(s): Wang, G., Suemine, A., Zhang, F., Hata, Y., Fukuoka, H., Kamai, T
  • Journal Title: Japan. Geomorphology Volume: 208 Pages: 11-21
  • DOI: 10.1016/j.geomorph.2013.11.009
  • Peer Reviewed
• [Journal Article] Landslide amplification by liquefaction of runout path material after the 2008 Wenchuan (M8.0) earthquake (2013)
  • Author(s): Wang, G., Huang, R.Q., Chigira, M., Wu, X.Y., Lourenco S.D.N
  • Journal Title: China. Earth Surface Processes and Landforms Volume: 38 Pages: 265-274
  • DOI: 10.1002/esp.3277
  • Peer Reviewed
• [Journal Article] Reservoir bank slope in Laxiwa Hydropower Station, China. Italian Journal of Engineering Geology and Environment - Book Series N.6 : Proceedings of International Conference on Vajont -1963-2013 (2013)
  • Author(s): Zhang, D.X., Wang, G
  • Journal Title: Thoughts and analyses after 50 years since the catastrophic landslide Pages: 513-520
  • DOI: 10.4408/IJEGE.2013-06.B-49
  • Peer Reviewed
• [Journal Article] Undrained shear behaviors of saturated loess at different concentrations of sodium chlorate solution (2013)
  • Author(s): Zhang, F.Y., Wang, G., Kamai, T., Chen, W.W., Zhang D.X., Yang J
  • Journal Title: Engineering Geology Volume: 155 Pages: 69-79
  • DOI: 10.1016/j.enggeo.2012.12.018
  • Peer Reviewed
• [Journal Article] Satellite remote sensing based detection of the deformation of a reservoir bank slope in Laxiwa Hydropower Station (2013)
  • Author(s): Zhang, D.X., Wang, G., Yang, T.J., Zhang, M.C., Chen, S.H., Zhang, F.Y
  • Journal Title: China. Landslides Volume: 10(2) Pages: 231-238
  • DOI: 10.1007/s10346-012-0378-9
  • Peer Reviewed
• [Journal Article] Effectiveness of a new organic polymer sand-fixing agent on sand fixation (2012)
  • Author(s): Liu, J., Shi, B., Lu, Y., Jiang H.T., Huang, H., Wang G., Kamai, T
  • Journal Title: Environmental Earth Science Volume: 65 Pages: 589-595
  • DOI: 10.1007/s12665-011-1106-9
  • Peer Reviewed
• [Presentation] Landsliding phenomenon under abnormal weather conditions : a case study on Nisenotani landslides (Keynote speech) (2013)
  • Author(s): Wang, G
  • Organizer: In : Proc. workshop of rainfallinduced landslides warning technology
  • Place of Presentation: Taipei
  • Year and Date: 20131021-23
• [Presentation] 結晶片岩地すべりにおける連続地温計測による流動地下水脈の動態観測 (2013)
  • Author(s): 古谷元, 末峯章, 高野祐典, 王功輝, 新井場公徳
  • Organizer: 日本地すべり学会第52回研究発表会
  • Year and Date: 20130828-31
• [Presentation] Dynamic analysis of the Niumiangou rock avalanchetriggered by the May 12, 2008 Wenchuan earthquake, Sichuan, China (2013)
  • Author(s): Aiguo XING, Gonghui WANG
  • Organizer: 本地すべり学会第52回研究発表会
  • Place of Presentation: 島根
  • Year and Date: 20130828-31
• [Presentation] 新井場公徳(2013) : 異常気象時の斜面変動現象:二畝ノ谷地すべり地における観測結果 (2013)
  • Author(s): 王功輝, 末峯章, 松浦純生
  • Organizer: 日本地すべり学会第52回研究発表会, P-14
  • Place of Presentation: 島根
  • Year and Date: 20130828-31
• [Presentation] A catastrophic rockslide-debris avalanche at Zhaotong (2013)
  • Author(s): Aiguo Xing, Gonghui Wang
  • Organizer: description and dynamic analysis. Japan Geoscience Union Meeting 2013, HDS06-14
  • Place of Presentation: Yunnan, China
  • Year and Date: 2013-05-23
• [Presentation] 結晶片岩地すべり地の地下水年代測定例 (2012)
  • Author(s): 末峯章, 日浦啓全, 浅井和由, 柳楽祐平, 王功輝
  • Organizer: 第51回日本地すべり学会研究発表会講演集
  • Place of Presentation: 札幌
  • Year and Date: 20120828-31
• [Presentation] 地すべり地内の地下水の水みちの形成に対する地質構造の寄与 (2012)
  • Author(s): 日浦啓全, 末峯章, 田中昭雄, 王功輝
  • Organizer: 第51回日本地すべり学会研究発表会講演集
  • Place of Presentation: 札幌
  • Year and Date: 20120828-31
• [Presentation] 積算暖度法を用いた土砂災害の危険度評価手法 (2012)
  • Author(s): 松浦純生, 岡本 隆, 阿部和時
  • Organizer: 第51回日本地すべり学会研究発表会講演集
  • Place of Presentation: 札幌
  • Year and Date: 20120828-31
• [Presentation] Some catastrophic landslides triggered by the 2011 off the Pacific coast of Tohoku Earthquake (2012)
  • Author(s): Wang, G., Suemine, A., Zhang, F.Y., Fukuoka, H., Kamai, T
  • Organizer: 11th Int'l & 2nd North American Symp. on Landslides
  • Place of Presentation: Banff
  • Year and Date: 20120102-08