Deliberate Failure of Slurry Trench Excavations in Soft Clay

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DiBiagio, E
Myrvoll, F
Balasubramaniam, AS
Jayasiri, JMNS
Aas, G
Oh, E
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Date
2020
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Abstract

The instrumentation used and the observations made on full scale field tests carried out in two slurry trench excavations in soft marine clay (at Vaterland, Oslo) are presented and discussed. The excavations were 1 m x 5 m and 1 m x 1.8 m in internal cross section and 20 m deep. The testing program was carefully planned to obtain information which could confirm the overall stability of the trenches using water instead of expensive special slurries. The instruments used included a precision settlement gauge, numerous settlement reference points and electrical piezometers, slope indicator casings and specially designed hydraulic gauges for instantaneous measurement of the inward movement of the vertical walls of the trenches. This project illustrates the importance of large-scale tests and instrumentation in Geotechnical Engineering.

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Geotechnical Engineering Journal of the SEAGS & AGSSEA
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51
Issue
4
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© 2020 Southeast Asian Geotechnical Society. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
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Engineering
Science & Technology
Engineering, Geological
Full-scale test
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DiBiagio, E; Myrvoll, F; Balasubramaniam, AS; Jayasiri, JMNS; Aas, G; Oh, E, Deliberate Failure of Slurry Trench Excavations in Soft Clay, Geotechnical Engineering Journal of the SEAGS & AGSSEA, 2020, 51 (4), pp. 209-223
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