Soil suction monitoring for landslides and slopes

Toll, David, Lourenco, Sergio, Mendes, Joao, Gallipoli, Domenico, Evans, Fred, Augarde, Charles, Tang, Minh, Rojas, Juan, Pagano, Luca, Mancuso, Claudio, Zingariello, Claudia and Tarantino, Alessandro 2011. Soil suction monitoring for landslides and slopes. Quarterly Journal of Engineering Geology and Hydrogeology 44 (1) , pp. 23-33. 10.1144/1470-9236/09-010

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Abstract

Rainfall is the most frequent triggering factor for landslides and the development of early warning systems has to take account of this. It is suggested that direct measurement of pore pressure gives the most reliable prediction of failure of a slope. The amount of rainfall can be only a crude indicator of failure as the processes that occur between rain falling on a slope and the resulting pore water pressure change are complex, highly non-linear and hysteretic. The paper describes highcapacity tensiometers developed within the EU-funded MUSE Research Training Network that have been used for measuring suctions in slopes. High-capacity tensiometers are capable of direct measurement of pore water pressure down to −2 MPa and are also able to record positive pore water pressures. Two methods of field installation are discussed; one developed by ENPC in France uses a single tensiometer per hole, and the second technique, developed by Durham University in the UK, allows multiple tensiometers to be used at different depths within a single borehole. Continuous monitoring of pore water pressure has been carried out over several months and shows the responses to climatic events.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	Q Science > QE Geology
Publisher:	Geological Society of London
ISSN:	2041-4803
Last Modified:	19 Mar 2016 23:16
URI:	https://orca.cardiff.ac.uk/id/eprint/45344

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• Soil suction monitoring for landslides and slopes. (deposited 30 Sep 2011 14:39)
  • Soil suction monitoring for landslides and slopes. (deposited 26 Mar 2013 16:02) [Currently Displayed]

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