%0 Journal Article
%T The role of poroviscosity in evaluating land subsidence due to groundwater extraction from sedimentary basin sequences
%A James D. Jackson
%A Donald C. Helm
%A John C. Brumley
%J Geof¨ªsica internacional
%D 2004
%I Universidad Nacional Aut¨®noma de M¨¦xico
%X This paper describes research being carried out on the development of the role of poroviscosity in determining land subsidence due to groundwater extraction. Poroviscosity incorporates early-time (so-called instantaneous), intermediate (so-called primary consolidation) and late time (creep or so-called secondary compression) into one unified theory of time dependent skeletal compression. It requires only one constant to be evaluated for one-dimensional behaviour and at any time exhibits a semilogarithmic stress/strain relationship. Poroviscous theory should accordingly provide an improved accuracy of land subsidence prediction results when saturated sedimentary basin sequences are depressurized.
%K Poroviscosity
%K land subsidence
%K groundwater extraction
%K mining
%U http://www.geofisica.unam.mx/unid_apoyo/editorial/publicaciones/investigacion/geofisica_internacional/anteriores/2004/04/Jackson.pdf