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, Narendra Kumar |
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] |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.