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http://dx.doi.org/10.9711/KTAJ.2022.24.3.279

Numerical simulation study on applicability of electrical resistivity survey at tunnel face  

Yi, Myeong-Jong (Korea Institute of Geosciences and Mineral Resources)
Kim, Nag-Young (Korea Expressway Corporation Research Institute)
Lee, Sangrae (Korea Expressway Corporation Research Institute)
Hwang, Bumsik (Korea Expressway Corporation Research Institute)
Ha, Myung Jin (Heesong Geotek Co., Ltd.)
Kim, Ki-Seog (Heesong Geotek Co., Ltd.)
Cho, In-Ky (Dept. of Geophysics, Kangwon National University)
Lee, Kang-Hyun (Korea Expressway Corporation Research Institute)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.24, no.3, 2022 , pp. 279-292 More about this Journal
Abstract
Unexpected anomalies in the geotechnical investigation at design stage may cause problems during tunnel excavation. Therefore, it is important to predict the ground condition ahead of a tunnel face during tunnel excavation in order to prevent tunnel collapse. Despite the fulfillment of an electrical resistivity survey at the tunnel face, the existing electrical resistivity survey program can produce distorted results by the limitation of tunnel modelling. In this background, this study develops a modelling program for an electrical resistivity survey considering the tunnel shape. Numerical simulation and inverse calculation were performed for the electrical resistivity survey in the tunnel using the developed program. As a result, it was proved that the developed program could predict accurately the anomalous object's location and condition ahead of the tunnel face.
Keywords
Electrical resistivity survey; Tunnel;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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