QJEGH_Short-Form-Paper_Draft_v1.0_21 07 2015.pdf (1.5 MB)
Photographic feature: acoustic emission monitoring of coastal slopes in NE England, UK
journal contribution
posted on 2023-06-09, 05:22 authored by Alister Smith, Neil Dixon, Roger Moore, Philip MeldrumAcoustic emission (AE) monitoring of an active waveguide (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 destabilizing effects. The technique can also quantify decelerations in movement in response to stabilizing effects (e.g. remediation or porewater pressure dissipation). This paper describes 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 continuing 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 groundwater flowing through the active waveguide from relatively high-permeability strata in response to rainfall events.
History
Publication status
- Published
File Version
- Accepted version
Journal
Quarterly Journal of Engineering Geology and HydrogeologyISSN
1470-9236Publisher
Geological SocietyExternal DOI
Issue
3Volume
50Page range
239-244Department affiliated with
- Geography Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2017-03-06First Open Access (FOA) Date
2018-02-16First Compliant Deposit (FCD) Date
2017-03-06Usage metrics
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