Seismic Imaging of Unstable Ground

Robert J. Whiteley

doi:10.1071/ASEG2006ab194

ISSN: 2202-0586
E-ISSN:

oa Seismic Imaging of Unstable Ground
Authors Robert J. Whiteley^a
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^a Cofey Geosciences Pty. Ptd, , 8/12 Mars Rd. Lane Cove West, 2066, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2006, Issue ASEG2006 - 18th Geophysical Conference, Dec 2006, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2006ab194
- Published online: 01 Dec 2006

Abstract

Unstable ground conditions caused by unexpected collapse of existing buried infrastructure or incidents during tunnelling represent major geotechnical risks.

Specially developed crosshole, SUBS and SEWREEL seismic imaging technologies that operate from boreholes and underground openings can be applied to define the subsurface extent of the unstable ground and to monitor the effectiveness of remedial works. These technologies use below ground hydrophone arrays and surface seismic sources.

A case study of a shallow sewer collapse that followed a rainfall event in a beach suburb of Sydney, demonstrates the application of these imaging technologies, showing their ability to define the resulting unstable ground hazard and to assist with geotechnical risk reduction.

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2006-12-01

2026-01-15

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References

Douglas, D. J., 1983, The Standard Penetration Test: in Insitiu testing for geotechnical investigations, ed. M. C. Ervin, Ch. 2, 21-32.
Mazzarella, N., 1994, Rehabilitation of the Epsom Road Sewer, Proc. 2nd Trenchless Technology Conf, Brisbane, 19-21 June, 1994, 1-8.
Pedler, I. V., and Whiteley, R. J., 2001, Applying innovative geophysical methods to assist identification and repair of road collapses, Australian Geomechnics, 36, 2, 57-62.
Whiteley, R. J., 1994, Innovative applications of surface and downhole geophysical methods. Proc. 13th International Conference on Soil Mechanics and Foundation Engineering, New Delhi, 5-10 January, 1994, 195-197.
Whiteley, R. J. and Pedler, I. V., 1994, Geophysical assessment of Epsom Road Sewer, Proc. 2nd Trenchless Technology Conf., Brisbane, 19-21 June, 1994, 1-8.
Whiteley, R., J., 2000, Seismic Imaging of ground conditions from buried conduits and boreholes, Proc. Paris 2000: Petrophysics meets Geophysics, Paris, 6-8 Nov. 2000, European Assn. of Geoscientists and Engineers, paper B-15.
Whiteley, R., J., 2001, Condition risk assessment of underground utilities with SEWREEL seismic imaging. Proc. SAGEEP, 2001, Denver, 4-7 March 2001, Paper B15, 1-7.
Whiteley, R., J., 2003, Reducing tunnelling risks with seismic imaging. Proc. Underground Construction 2003 Conf, London, Sept. 24-25, 2003, 585-594.

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Article Type: Research Article

Keyword(s): imaging; risk; seismic; tunnels; voids

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