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Soil fluidisation outside leaks in water distribution pipes - preliminary observations

Soil fluidisation outside leaks in water distribution pipes - preliminary observations
Soil fluidisation outside leaks in water distribution pipes - preliminary observations
This paper reports on a preliminary study carried out to investigate the effect of soil, and particularly fluidisation of soil, around leaking water pipes. During the study a bed of particles is fluidised at controlled flow rates, using upward-pointing orifices to simulate holes in a pipe. The extent of the fluidised zone and the head drop within the bed are monitored. The results show that significant head can be sustained in a shallow pipe without the fluidised zone breaking through the bed surface. Head loss from a leaking pipe is divided into three components: through the orifice; in the fluidised/mobile bed zones; and through the static soil. The results show the extent of fluidised and mobile zones appears to be almost independent of the orifice size. Most of the head loss is found to occur within fluidised and mobile zones; significant (but lower) head loss is found to occur through the orifice and only a small fraction of the total losses occurs in the static soil.
pipes & pipelines, geotechnical engineering, fluid mechanics
1741-7589
546-555
van Zyl, J.E.
1c80be58-ce15-49dd-a65f-e63605673332
Alsaydalani, M.O.A.
167d645b-ade9-4f21-9c87-45618e38607c
Clayton, C. R. I.
8397d691-b35b-4d3f-a6d8-40678f233869
Bird, T.
f7d6f621-dce3-49a7-ba56-e0b224c9da25
Dennis, A.
bb426bdd-d196-4d17-aa85-dc831fcd4e49
van Zyl, J.E.
1c80be58-ce15-49dd-a65f-e63605673332
Alsaydalani, M.O.A.
167d645b-ade9-4f21-9c87-45618e38607c
Clayton, C. R. I.
8397d691-b35b-4d3f-a6d8-40678f233869
Bird, T.
f7d6f621-dce3-49a7-ba56-e0b224c9da25
Dennis, A.
bb426bdd-d196-4d17-aa85-dc831fcd4e49

van Zyl, J.E., Alsaydalani, M.O.A., Clayton, C. R. I., Bird, T. and Dennis, A. (2013) Soil fluidisation outside leaks in water distribution pipes - preliminary observations. Proceedings of the Institution of Civil Engineers - Water Management, 166 (10), 546-555. (doi:10.1680/wama.11.00119).

Record type: Article

Abstract

This paper reports on a preliminary study carried out to investigate the effect of soil, and particularly fluidisation of soil, around leaking water pipes. During the study a bed of particles is fluidised at controlled flow rates, using upward-pointing orifices to simulate holes in a pipe. The extent of the fluidised zone and the head drop within the bed are monitored. The results show that significant head can be sustained in a shallow pipe without the fluidised zone breaking through the bed surface. Head loss from a leaking pipe is divided into three components: through the orifice; in the fluidised/mobile bed zones; and through the static soil. The results show the extent of fluidised and mobile zones appears to be almost independent of the orifice size. Most of the head loss is found to occur within fluidised and mobile zones; significant (but lower) head loss is found to occur through the orifice and only a small fraction of the total losses occurs in the static soil.

Full text not available from this repository.

More information

e-pub ahead of print date: May 2013
Published date: November 2013
Keywords: pipes & pipelines, geotechnical engineering, fluid mechanics
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 360570
URI: https://eprints.soton.ac.uk/id/eprint/360570
ISSN: 1741-7589
PURE UUID: ed31f7a8-cdcf-44c4-94ff-37604195604f
ORCID for C. R. I. Clayton: ORCID iD orcid.org/0000-0003-0071-8437

Catalogue record

Date deposited: 18 Dec 2013 11:36
Last modified: 20 Jul 2019 01:08

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