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Lookup NU author(s): Dr Paul Hughes,
Dr Ross Stirling,
Professor Stephanie Glendinning
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Geotechnical asset owners need to know which parts of their asset network are vulnerable to climate change induced failure in order to optimise future investment. Protecting these vulnerable slopes requires monitoring systems capable of identifying and alerting to asset operators changes in the internal conditions that precede failure. Current monitoring systems are heavily reliant on point sensors which can be difficult to interpret across slope scale. This paper presents challenges to producing such a system and research being carried out to address some of these using electrical resistance tomography (ERT). Experimental results show that whilst it is possible to measure soil water content indirectly via resistivity the relationship between resistivity and water content will change over time for a given slope. If geotechnical parameters such as pore water pressure are to be estimated using this method then ERT systems will require integrating with more conventional geotechnical instrumentation to ensure correct representative information is provided. The paper also presents examples of how such data can be processed and communicated to asset owners for the purposes of asset management.
Author(s): Hughes PN, Hen-Jones R, Stirling RA, Glendinnning S, Gunn DA, Chambers JE, Dijkstra TA, Smethurst J, Flesjo K
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 3rd European Conference on Unsaturated Soils E-UNSAT 2016
Year of Conference: 2016
Print publication date: 01/01/2016
Online publication date: 12/09/2016
Acceptance date: 02/04/2016
Publisher: EDP Sciences
Series Title: E3S Web of Conferences