Evidence of Liquefaction: Kathmandu Valley

May 29, 2015 by  
Filed under Geotechnical Impacts

Posted by Manika Maharjan

Kathmandu valley which consists of three districts, Kathmandu, Lalitpur, and Bhaktapur, was once a big lake with about 500 m thickness of soft clay. There have been numerous studies on Liquefaction susceptibility of Kathmandu valley (Piya 2004). However, the liquefaction triggered by the M7.8 Gorkha earthquake appears to be limited and localized. The localized areas along the edge of Kathmandu basin where evidence of liquefaction was observed are Imadol, Duwakot, Ramkot, Hattiban, and Manamaiju. The evidence includes sand boils and tilting of structures to a minimum extent.

Piya, B.R., (2004) “Generation of a geological database for liquefaction hazard assessment in Kathmandu Valley” Master’s Thesis, International Institute for Geo-Information Science and Earth Observation Enschede, The Netherlands.




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