Tunnel detection using vibrating and impulsive seismic sources with a landstreamer

André J.M. Pugin, Kevin Brewer, Timothy Cartwright, Steven L. Sargent

Research output: Contribution to journalConference articlepeer-review

Abstract

We present the results of two surveys showing that shear wave seismic reflection can image a sewage tunnel buried at 17 m in marine clay, and coalmine tunnels close to the bedrock surface beneath about 30 m of recent fluvial sediments. The SH shear wave seismic reflection method provides outstanding diffraction features only visible with transverse horizontal sources and recording capacities (H2,H2). These data were acquired using an impulsive or a broader band vibrating source coupled with a landstreamer. The use of SV vertical shear and PP compressive waves extracted from data acquired with vertical vibrating source and receiver mode (V,V) did not give satisfying results for locating tunnels in these environments.

Original languageEnglish (US)
Pages (from-to)2667-2671
Number of pages5
JournalSEG Technical Program Expanded Abstracts
DOIs
StatePublished - Aug 27 2018
EventSociety of Exploration Geophysicists International Exposition and 88th Annual Meeting, SEG 2018 - Anaheim, United States
Duration: Oct 14 2018Oct 19 2018

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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