Porewater Pressures Due to Overburden Removal
Publication: Journal of Geotechnical Engineering
Volume 109, Issue 8
Abstract
A mathematical model describing the behavior of a fully saturated sediment subjected to a uniformly eroding load is developed on the basis of Terzaghi's classical consolidation theory. The model is used to analyze simultaneous generation and dissipation of deficient pore water pressures. A moving boundary erosion/swelling problem results from this formulation. Analytical solutions are obtained for several cases of practical interest. The computed results are presented in dimensionless quantities. It has been found that the deficient pore water pressure normalized with respect to the (soil) weight removed at any instant is a function of: (1) The ratio of the depth to the thickness of soil removed up to that instant; and (2) the ratio of the rate of soil removal to the swelling coefficient of the soil.
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References
1.
Biot, M. A., “General Theory of Three‐dimensional Consolidation,” Journal of Applied Physics, Vol. 12, 1941, pp. 155–164.
2.
Carslaw, H. S., and Jaeger, J. C., “Conduction of Heat in Solids,” Clarendon Press, Oxford, 1947.
3.
Gibson, R. E., “The Progress of Consolidation in a Clay Layer Increasing in Thickness with Time,” Geotechnique, Vol. 8, pp. 171–182.
4.
Koppula, S. D., “The Consolidation of Soil in Two Dimensions and with Moving Boundaries,” thesis presented to the University of Alberta, at Edmonton, Alberta, Canada, in 1970, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
5.
Rendulic, L., “Porenziffer und Porenwässer drück in Tonen,” Der Bauingenieur, Germany, Vol. 17, 1936, pp. 559–564.
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Published In
Journal of Geotechnical Engineering
Volume 109 • Issue 8 • August 1983
Pages: 1099 - 1110
Copyright
Copyright © 1983 ASCE.
History
Published online: Aug 1, 1983
Published in print: Aug 1983
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