CEEN 544--Group 4 Pedro Garcia Elise Estep Jenny Blonquist

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Presentation transcript:

CEEN 544--Group 4 Pedro Garcia Elise Estep Jenny Blonquist Xiaolin Landslide CEEN 544--Group 4 Pedro Garcia Elise Estep Jenny Blonquist

Overview -Typhoon Morakot in August 2009 -Total of 108 inches of rain, causing dozens of landslides -Largest landslide at Xiaolin Village near Kaohsiung, Taiwan -6:16 am : 66 inches of rain accumulated (about 3 days) -Landslide created a dam at nearby river -Dam was breached an hour later and wiped out everything -Killed 400 + people ELISE Xiaolin village Shiaolin Hsiaolin

Before & After

Slope stability analysis done by: -3D discrete element program -using DEM’s -before and after information from Google Earth -field survey information -estimated frictional coefficients and strength of the landslide

Pedro

Causes and Analysis -Traveled 45-75 mph -27 million m3 of material (M: 4.6) -Deep-seated landslide -2.83 km by 1.63 km (1.8 miles x 1.01 miles) -465 deaths -Flexural slip mechanism & dip slope -Weathering -Increased pore pressure Jenny Sliding surface : shale layer

References https://www.youtube.com/watch?v=tWzzntkyIwQ Formation, failure, and consequences of the Xiaolin landslide dam, triggered by extreme rainfall from Typhoon Morakot, Taiwan https://link.springer.com/content/pdf/10.1007%2Fs10346-013-0394-4.pdf Catastophic landslide induced by Typhoon Morakot, Shiaolin, Taiwan http://web.nchu.edu.tw/pweb/users/feng/research/9712.pdf The Landslide Blog https://blogs.agu.org/landslideblog/2009/09/27/photos-and-text-from-a-visit-to-the-shiaolin-landslide-in-taiwan/ https://www.jstage.jst.go.jp/article/jscejhe/67/4/67_4_I_721/_pdf/-char/en https://www.youtube.com/watch?v=tWzzntkyIwQ https://www.youtube.com/watch?v=U-bWMa_QPKQ https://www.youtube.com/watch?v=jYONmfgGoMI https://www.youtube.com/watch?v=D59xJBfj1Cc