2012 Fiscal Year Final Research Report
Study on high speed and long run-out movement of earthquake induced landslides by considering earthquake trampoline effect
| Project/Area Number |
22310113
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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 | 一般 |
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| Research Field |
Natural disaster science
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| Research Institution | Kyushu University |
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Principal Investigator |
CHEN Guangqi 九州大学, 基幹教育院, 教授 (50293882)
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| Co-Investigator(Kenkyū-buntansha) |
ZEN Kouki 九州大学, 工学研究院, 教授 (50304754)
ZHOU Guoyun 西日本工業大学, 工学部, 教授 (50322293)
KASMA Kiyonobu 九州大学, 工学研究院, 准教授 (10315111)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 巨大地震 / 高速 / 遠距離運動 / トランポリン効果 / 多重加速モデル / 数値シミュレーション / 不連続変形法DDA / 土砂災害 |
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| Research Abstract |
The purpose of this study is to clarify the mechanism of high speed and long run-out movement of earthquake induced landslide and to develop a practical numerical simulation program for predicating the movement behaviors. The primary factor causing high speed and long run-out was considered as trampoline effect of earthquake on the movement of an object on ground. A ping-pong model has been proposed for clarifying how and why trampoline occurs. Based on this physical model, a multiply acceleration numerical model has been proposed for explaining how the high speed and long run-out are induced. A practical DDA (Discontinuous Deformation Analysis) program has been developed successfully by incorporating the new model, which can be used for predicating or estimating landslide movement in detail. A new risk evaluation method has been proposed based on earthquake induced landslide disaster chain model. Thus, it is expected that the achievements in this study are useful and helpful in mitigating unexpected large loss and serious damages from earthquake induced landslides
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Research Products
(22 results)
