S-Wave Borehole Tomography - A Tool for Geotechnical Site Characterization

DOI

10.2991/iceeg-16.2016.102How to use a DOI?

Keywords

S-wave, borehole tomography, tool

Abstract

Geophysical methods are able to fill the gap between boreholes and to provide a measure of the spatial continuity of structures. Borehole seismic tomography promises the highest resolution when applied at a local scale of a few tens of meters. Currently, almost exclusively P-wave tomography is employed in geotechnical oriented tomographic surveys. However, from the geotechnical perspective, the benefit of P-wave tomography is rather limited. It is the S-wave structure of the ground which is crucial to derive geotechnical relevant parameters, such as shear strength or other elastic moduli. Up to now, only little effort has been made to develop the borehole S-wave crosshole tomographic method. S-wave tomography has some clear advantages compared to conventional P-wave tomography, such as a better spatial resolution and a higher sensitivity to material changes. Furthermore, S-waves are only slightly influenced by the ground water table and S-waves passing this zone are not much affected by ray bending compared to P-waves. Within this paper we present first results of a newly developed S-wave tomography system and field results from different test sites.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Fechner Thomas
AU  - Julius von Ketelhodt
AU  - Zhiqing Lin
PY  - 2016/06
DA  - 2016/06
TI  - S-Wave Borehole Tomography - A Tool for Geotechnical Site Characterization
BT  - Proceedings of the 7th International Conference on Environment and Engineering Geophysics & Summit Forum of Chinese Academy of Engineering on Engineering Science and Technology
PB  - Atlantis Press
SP  - 378
EP  - 380
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceeg-16.2016.102
DO  - 10.2991/iceeg-16.2016.102
ID  - Thomas2016/06
ER  -