Mechanism of two rapid and long-runout landslides in the 16 April 2016 Kumamoto earthquake using a ring-shear apparatus and computer simulation (LS-RAPID)

被引:61
作者
Khang Dang [1 ,2 ]
Sassa, Kyoji [1 ]
Fukuoka, Hiroshi [3 ]
Sakai, Naoki [4 ]
Sato, Yuji [5 ]
Takara, Kaoru [6 ]
Lam Huu Quang [7 ]
Doan Huy Loi [7 ]
Pham Van Tien [6 ]
Nguyen Duc Ha [6 ]
机构
[1] Int Consortium Landslides, Sakyo Ku, 138-1 Tanaka Asukaicho, Kyoto 6068226, Japan
[2] Vietnam Natl Univ, VNU Univ Sci, Hanoi, Vietnam
[3] Niigata Univ, Res Inst Nat Hazards & Disaster Recovery, Niigata, Japan
[4] Natl Res Inst Earth Sci & Disaster Resilience, Ibaraki, Japan
[5] GODAI Dev Corp, Kanazawa, Ishikawa, Japan
[6] Kyoto Univ, Disaster Prevent Res Inst, Kyoto, Japan
[7] Inst Transport Sci & Technol, Hanoi, Vietnam
关键词
Kumamoto landslides; Earthquake-induced landslides; UAV photos; Ring-shear apparatus; Computer simulation; LS-RAPID; JAPAN; MEGASLIDE;
D O I
10.1007/s10346-016-0748-9
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Around hundred landslides were triggered by the Kumamoto earthquakes in April 2016, causing fatalities and serious damage to properties in Minamiaso village, Kumamoto Prefecture, Japan. The landslides included many rapid and long-runout landslides which were responsible for much of the damage. To understand the mechanism of these earthquake-triggered landslides, we carried out field investigations with an unmanned aerial vehicle to obtain DSM and took samples from two major landslides (Takanodai landslide and Aso-ohashi landslide) to measure parameters of the initiation and the motion of landslides. A series of ring-shear tests and computer simulations were conducted using a measured Kumamoto earthquake acceleration record from KNet station KMM005, 10 km west of Aso-ohashi landslide. The research results supported our assumed mechanism of sliding-surface liquefaction for the rapid and long-runout motion of these landslides.
引用
收藏
页码:1525 / 1534
页数:10
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