2011 Fiscal Year Final Research Report
Investigation on failure risk of landslide dams formed during the 2008 Wenchuan earthquake and the effectiveness of emergency countermeasures
| Project/Area Number |
21403002
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Natural disaster science
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| Research Institution | Kyoto University |
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Principal Investigator |
WANG Gonghui 京都大学, 防災研究所, 助教 (50372553)
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| Co-Investigator(Kenkyū-buntansha) |
KAMAI Toshitaka 京都大学, 防災研究所, 教授 (10277379)
CHIGIRA Masahiro 京都大学, 防災研究所, 教授 (00293960)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 地震 / 地すべり / 天然ダム / 危険度評価 |
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| Research Abstract |
During the 2008 Sichuan earthquake(M8. 0), more than 800 landslide dams formed. To clarify the formation and failure of these landslide dams, we conducted detailed field survey and monitoring on some big landslide dams. The geological, geomorphological and movement features of the original landslides were investigated and the geotechnical properties of the dam sites were surveyed. We also surveyed some landslide dams triggered by earthquake and/or rainfall in Japan. Based on these results, we proposed a new approach for evaluating the collapse failure risk of landslide dam due to overtopping.
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