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A shear wave ground surface vibration technique for the detection of buried pipes

A shear wave ground surface vibration technique for the detection of buried pipes
A shear wave ground surface vibration technique for the detection of buried pipes
A major UK initiative, entitled ‘Mapping the Underworld’ aims to develop and prove the efficacy of a multi-sensor device for accurate remote buried utility service detection, location and, where possible, identification. One of the technologies to be incorporated in the device is low-frequency vibro-acoustics; the application of this technology for detecting buried infrastructure, in particular pipes, is currently being investigated. Here, a shear wave ground vibration technique for detecting buried pipes is described. For this technique, shear waves are generated at the ground surface, and the resulting ground surface vibrations measured. Time-extended signals are employed to generate the illuminating wave. Generalized cross-correlation functions between the measured ground velocities and a reference measurement adjacent to the excitation are calculated and summed using a stacking method to generate a cross-sectional image of the ground. To mitigate the effects of other potential sources of vibration in the vicinity, the excitation signal can be used as an additional reference when calculating the cross-correlation functions. Measurements have been made at two live test sites to detect a range of buried pipes. Successful detection of the pipes was achieved, with the use of the additional reference signal proving beneficial in the noisier of the two environments.
shear wave, buried pipe, ground vibration, mapping the underworld, time domain stacking
0926-9851
164-172
Muggleton, J.M.
2298700d-8ec7-4241-828a-1a1c5c36ecb5
Papandreou, B.
df5b58cf-c49c-45f1-a3e7-01ed286d970d
Muggleton, J.M.
2298700d-8ec7-4241-828a-1a1c5c36ecb5
Papandreou, B.
df5b58cf-c49c-45f1-a3e7-01ed286d970d

Muggleton, J.M. and Papandreou, B. (2014) A shear wave ground surface vibration technique for the detection of buried pipes. Journal of Applied Geophysics, 106, 164-172. (doi:10.1016/j.jappgeo.2014.04.021).

Record type: Article

Abstract

A major UK initiative, entitled ‘Mapping the Underworld’ aims to develop and prove the efficacy of a multi-sensor device for accurate remote buried utility service detection, location and, where possible, identification. One of the technologies to be incorporated in the device is low-frequency vibro-acoustics; the application of this technology for detecting buried infrastructure, in particular pipes, is currently being investigated. Here, a shear wave ground vibration technique for detecting buried pipes is described. For this technique, shear waves are generated at the ground surface, and the resulting ground surface vibrations measured. Time-extended signals are employed to generate the illuminating wave. Generalized cross-correlation functions between the measured ground velocities and a reference measurement adjacent to the excitation are calculated and summed using a stacking method to generate a cross-sectional image of the ground. To mitigate the effects of other potential sources of vibration in the vicinity, the excitation signal can be used as an additional reference when calculating the cross-correlation functions. Measurements have been made at two live test sites to detect a range of buried pipes. Successful detection of the pipes was achieved, with the use of the additional reference signal proving beneficial in the noisier of the two environments.

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More information

Accepted/In Press date: 25 April 2014
e-pub ahead of print date: 9 May 2014
Published date: July 2014
Keywords: shear wave, buried pipe, ground vibration, mapping the underworld, time domain stacking
Organisations: Dynamics Group

Identifiers

Local EPrints ID: 364837
URI: https://eprints.soton.ac.uk/id/eprint/364837
ISSN: 0926-9851
PURE UUID: ecfca1f6-9443-4c77-a6df-a13bc2be77aa

Catalogue record

Date deposited: 14 May 2014 14:39
Last modified: 19 Jul 2019 21:13

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