FactSheet: FS2016-E-0002

Title:
Follow-up report of damage caused by the Gorkha Earthquake, Nepal, of April 25th, 2015

Authour:
Kazuo KONAGAI¹, Rama Mohan POKHREL², Takkaki IKEDA³, Masataka SHIGA⁴, Rahman Md AFTABUR⁵, Hiroki OKUDA⁶

1Fellow of JSCE, Professor, Graduate School of Urban Innovation, Yokohama National University
2Member of JSCE, Researcher, Graduate School of Urban Innovation, Yokohama National University
3Member of JSCE, Researcher, Tobishima Corporation Co. Ltd.,
4Undergraduate student, Department of Civil Engineering, Yokohama National University
5PhD Candidate, Department of Civil Engineering, Yokohama National University
6Undergraduate student, Department of Civil Engineering, Yokohama National University

Key Facts:
・ Hazard Type: Earthquake
・ Date of disaster: April 25th , 2015
・ Location of Survey: Kathmandu, Dhunche, Nepal
・ Date of the field survey: July 11th to July 16th and October 31st to November 3rd, 2015
・ Survey tools: Dynamic dual-frequency positioning system, Microtremor sensor, Surface wave survey measurement tool

Key findings:
1) Surface Wave Surveys near the damaged section of Araniko Highway identified the presence of a shallow soft soil layer, which is considered to be an organic soil deposit.
2) Creeping nature of a landslide mass was clearly observed along Pasang Lhamu Highway at the southern limb of the Kuncha-Gorkha anticlinorium. Failure modes of rock slopes, In-situ initial stress state, Ground liquefaction, Spectrum of aftershock

Key Words:
Key Words: Gorkha Earthquake, road damage, surface wave survey, micro-tremors, GPS monitoring

Paper: PDF 2,153KB