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On the effects of soil properties on leak noise propagation in plastic water distribution pipes

On the effects of soil properties on leak noise propagation in plastic water distribution pipes
On the effects of soil properties on leak noise propagation in plastic water distribution pipes
In many countries, leaks are located in water distribution pipes by using the cross-correlation of pipe vibration measured either side of a suspected leak. However, in modern plastic pipes this can be problematic due to strong coupling between the water, the pipe and the soil, affecting the propagation of leak noise within the pipe. This paper concerns an analytical, numerical and experimental investigation into the way in which soil properties influence leak noise propagation in buried plastic water pipes. The analytical model allows a detailed investigation into the physical effects of the soil on leak noise (wave) propagation in the pipe, in particular on the wave-speed and wave attenuation. Results highlight that, in addition to the pipe hoop stiffness, the shear stiffness of the soil can have a significant effect on the wave-speed in the pipe. Experimental measurements were conducted at two different sites - one in the UK and the other in Brazil. In the UK system, both dilatational and shear waves in the soil propagate away from the pipe, resulting in large wave attenuation in the pipe. However, in the Brazilian system, only shear waves propagate resulting in smaller wave attenuation in the pipe.
0022-460X
120-133
Brennan, M.J.
87c7bca3-a9e5-46aa-9153-34c712355a13
Karimi, M.
2a8d30f6-4206-4f26-8a0a-9de34d8cb28e
Muggleton, J.M.
2298700d-8ec7-4241-828a-1a1c5c36ecb5
Almeida, F.C.L.
b9178bd5-600e-4c6e-b87e-2e613fd8e106
Kroll de Lima, F.
881b266b-5820-4f24-94c3-76a222b81039
Ayala, P.C.
3984aae7-7ca5-4c5c-876c-97ca7be98c93
Obata, D.
1b9569d2-7ea2-43c3-a13a-378cc6372433
Paschoalini, A.T.
bfa1fed9-f566-4380-807a-2c53e01b6627
Kessissoglou, N.
5f5fbc21-4c97-4e66-a306-132c965f0fec
Brennan, M.J.
87c7bca3-a9e5-46aa-9153-34c712355a13
Karimi, M.
2a8d30f6-4206-4f26-8a0a-9de34d8cb28e
Muggleton, J.M.
2298700d-8ec7-4241-828a-1a1c5c36ecb5
Almeida, F.C.L.
b9178bd5-600e-4c6e-b87e-2e613fd8e106
Kroll de Lima, F.
881b266b-5820-4f24-94c3-76a222b81039
Ayala, P.C.
3984aae7-7ca5-4c5c-876c-97ca7be98c93
Obata, D.
1b9569d2-7ea2-43c3-a13a-378cc6372433
Paschoalini, A.T.
bfa1fed9-f566-4380-807a-2c53e01b6627
Kessissoglou, N.
5f5fbc21-4c97-4e66-a306-132c965f0fec

Brennan, M.J., Karimi, M., Muggleton, J.M., Almeida, F.C.L., Kroll de Lima, F., Ayala, P.C., Obata, D., Paschoalini, A.T. and Kessissoglou, N. (2018) On the effects of soil properties on leak noise propagation in plastic water distribution pipes. Journal of Sound and Vibration, 427, 120-133. (doi:10.1016/j.jsv.2018.03.027).

Record type: Article

Abstract

In many countries, leaks are located in water distribution pipes by using the cross-correlation of pipe vibration measured either side of a suspected leak. However, in modern plastic pipes this can be problematic due to strong coupling between the water, the pipe and the soil, affecting the propagation of leak noise within the pipe. This paper concerns an analytical, numerical and experimental investigation into the way in which soil properties influence leak noise propagation in buried plastic water pipes. The analytical model allows a detailed investigation into the physical effects of the soil on leak noise (wave) propagation in the pipe, in particular on the wave-speed and wave attenuation. Results highlight that, in addition to the pipe hoop stiffness, the shear stiffness of the soil can have a significant effect on the wave-speed in the pipe. Experimental measurements were conducted at two different sites - one in the UK and the other in Brazil. In the UK system, both dilatational and shear waves in the soil propagate away from the pipe, resulting in large wave attenuation in the pipe. However, in the Brazilian system, only shear waves propagate resulting in smaller wave attenuation in the pipe.

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On the effect of soil properties accepted - Accepted Manuscript
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More information

Accepted/In Press date: 26 March 2018
e-pub ahead of print date: 15 May 2018
Published date: 4 August 2018

Identifiers

Local EPrints ID: 419286
URI: http://eprints.soton.ac.uk/id/eprint/419286
ISSN: 0022-460X
PURE UUID: 92a244d9-73be-43c9-ae0d-589d6beec058

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Date deposited: 10 Apr 2018 16:30
Last modified: 17 Dec 2019 05:30

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