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Quarterly Journal of Engineering Geology and Hydrogeology

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Quarterly Journal of Engineering Geology and Hydrogeology; 1976; v. 9; issue.4; p. 303-313;
DOI: 10.1144/GSL.QJEG.1976.009.04.03
© 1976 Geological Society of London

Article

Routine interpretation of the Lugeon water-test

A. C. Houlsby

Water Resources Commission, , Box 952 North Sydney, N.S.W. Australia.

A relatively simple routine method of calculating and interpreting the "modified" Lugeon water test is described. The method is used for assessing the need for foundation grouting at dam sites; it comprises calculations of lugeon values for each of five test runs at increasing and then decreasing pressures, followed by interpretation of the pattern of results, and hence selection of an appropriate representative permeability.

The relative frequency of different behaviour patterns is indicated by reference to 811 actual tests.




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