| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2012: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2011: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2010: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
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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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