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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/23596

Title: Acoustic emission monitoring of coastal slopes in north-east England, United Kingdom
Authors: Smith, Alister
Dixon, Neil
Moore, Roger
Meldrum, Philip
Issue Date: 2017
Publisher: © Geological Society
Citation: SMITH, A. ...et al., 2017. Acoustic emission monitoring of coastal slopes in north-east England, United Kingdom. Quarterly Journal of Engineering Geology and Hydrogeology, 50 (3), pp. 239-244.
Abstract: Acoustic emission (AE) monitoring of active waveguides (a steel tube with a granular backfill surround) installed through a slope can provide real-time warning of slope instability by quantifying increasing rates of movement (i.e. accelerations) in response to slope destabilising effects. The technique can also quantify decelerations in movement in response to stabilising effects (e.g. remediation or pore-water pressure dissipation). This paper details the AE monitoring approach and presents results from a field trial that compares AE measurements with continuous subsurface deformation measurements. The results demonstrate that AE monitoring provides continuous information on slope displacement rates with high temporal resolution. Case studies are presented where the AE technique is being used to monitor coastal slopes at Filey and Scarborough in North Yorkshire, UK, to inform on-going risk assessments for these slopes. The results demonstrate that the AE approach can successfully be used to monitor slopes with relatively deep shear surfaces (> 14 m); however, they also show that potentially contaminating AE can be generated by ground water flowing through the active waveguide from relatively high permeability strata in response to rainfall events.
Description: This paper was accepted for publication in the journal Quarterly Journal of Engineering Geology and Hydrogeology and the definitive published version is available at http://qjegh.lyellcollection.org/content/50/3/239
Sponsor: This paper is an output of Working Group 2 of EU COST Action TU1202 –Impacts of climate change on engineered slopes for infrastructure. TU1202 comprises four working groups, WG1–Slope numerical modelling, WG2– Field experimentation and monitoring, WG3–Soil/vegetation/climate interactions, WG4 –Slope risk assessment. This work was funded by OST Action TU1202 through the EU Horizon 2020 programme.
Version: Accepted for publication
DOI: 10.1144/qjegh2016-081
URI: https://dspace.lboro.ac.uk/2134/23596
Publisher Link: http://dx.doi.org/10.1144/qjegh2016-081
ISSN: 1470-9236
Appears in Collections:Published Articles (Architecture, Building and Civil Engineering)

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