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Diverting Volcanic Debris Flow with Pressed-In Sheet Piles Installed in Lava Rock
Izu-Oshima, a 91-square-kilometer volcanic island located 120 km south–southwest of Tokyo, Japan, experienced disastrous debris flows (900 m wide and 1.2 km long) in October 2013 after heavy rainfall associated with a typhoon. Unfortunately, 39 persons were killed including 3 missing and 22 others were injured because the debris flows inundated a residential area before it reached the ocean. The agency in charge of the island’s infrastructure built a solid guide wall with steel sheet piles as an emergency measure for diverting future debris flow from cascading down to another residential area. The site was on the slope with an uneven surface covered with sandy gravel and hard lava. Sheet piles were installed into the underlying lava layer with press-in piling using an auger attachment to overcome these difficult site conditions.
Diverting Volcanic Debris Flow with Pressed-In Sheet Piles Installed in Lava Rock
Izu-Oshima, a 91-square-kilometer volcanic island located 120 km south–southwest of Tokyo, Japan, experienced disastrous debris flows (900 m wide and 1.2 km long) in October 2013 after heavy rainfall associated with a typhoon. Unfortunately, 39 persons were killed including 3 missing and 22 others were injured because the debris flows inundated a residential area before it reached the ocean. The agency in charge of the island’s infrastructure built a solid guide wall with steel sheet piles as an emergency measure for diverting future debris flow from cascading down to another residential area. The site was on the slope with an uneven surface covered with sandy gravel and hard lava. Sheet piles were installed into the underlying lava layer with press-in piling using an auger attachment to overcome these difficult site conditions.
Diverting Volcanic Debris Flow with Pressed-In Sheet Piles Installed in Lava Rock
Takuma, Takefumi (author) / Nagano, Masashi (author)
Geo-Extreme 2021 ; 2021 ; Savannah, Georgia
Geo-Extreme 2021 ; 504-512
2021-11-04
Conference paper
Electronic Resource
English
Diverting Volcanic Debris Flow with Pressed-In Sheet Piles Installed in Lava Rock
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