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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15501
Title: Liquefaction potential study based on integrated geoelectrical imaging and geotechnical data - A case study
Authors: Devi R.
Sastry R.G.
Samadhiya N.K.
Published in: Proceedings of Symposium on the Application of Geophyics to Engineering and Environmental Problems, SAGEEP
Abstract: Soil liquefaction potential through low-resolution shear wave velocity (Vs) information derived from Multi-channel analysis of shear waves (MASW) and Standard Penetration Test (SPT) results of geotechnical engineering is a standard procedure. But such an estimate is crude at shallow depths. So, we propose an alternate refined method based on combined use of Electrical Resistivity Tomography (ERT) and SPT 'N'. We provide a case study involving two sites to illustrate the effectiveness of our method. Initially, we compute shear wave velocity (Vs) from resistivity data and SPT 'N' value through established regression equations. Then, we make use of familiar relations based upon corrected (N160) values and intensity of cyclic loading to compute factor of safety (FS) to assess soil liquefaction of a site. Our results transform observed ERT prifile sections into FS sections and they clearly stress that study region (IIT Roorkee campus, India) is having minimal soil liquefaction hazard for an earthquake magnitude Mw 7.5.
Citation: Proceedings of Symposium on the Application of Geophyics to Engineering and Environmental Problems, SAGEEP, (2016)
URI: http://repository.iitr.ac.in/handle/123456789/15501
Issue Date: 2016
Publisher: J and N Group, Ltd.
Keywords: Acoustic wave velocity
Earthquakes
Geophysics
Geotechnical engineering
Safety factor
Shear flow
Shear waves
Soil testing
Soils
Wave propagation
Earthquake magnitudes
Electrical resistivity tomography
Liquefaction hazards
Liquefaction potential studies
Multichannel analysis
Regression equation
Soil liquefaction potential
Standard penetration test
Soil liquefaction
ISSN: 15548015
Author Scopus IDs: 57190855729
8444151200
6506534111
Author Affiliations: Devi, R., Indian Institute of Technology Roorkee, Roorkee, India
Sastry, R.G., Indian Institute of Technology Roorkee, Roorkee, India
Samadhiya, N.K., Civil Engineering Department, Indian Institute of Technology Roorkee, Roorkee, India
Appears in Collections:Conference Publications [CE]

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