Penetration-induced pore pressure magnitudes - methods to determine transport parameters from terrestrial and marine penetrometer testing

D. Elsworth, D. S. Lee, H. Long, P. B. Flemings

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

New approaches are developed to use peak penetration-induced pore pressure magnitudes to in-dex profiles of in situ permeability. These methods potentially enable permeability profiles to be determined from continuous sounding by cone penetrometers, and from freefalling marine penetrometers that self-embed into seafloor sediments. Solutions are developed for the unsteady and partially-drained, fluid pressure field that develops around a volumetric dislocation that represents a penetrometer either advanced at constant rate, or decelerating as it self-embeds after freefall. Inertial effects are ignored. These solutions provide a consis-tent framework to view the penetration process, and enable penetration-induced pore pressures to be repre-sented in non-dimensional form, and related to conventional sounding indices inclusive of tip resistance, Q t , friction factor, F r , and pore pressure ratio, B q , among others. These relationships are used to define perme-ability magnitudes in the intermediate range where response is partially drained.

Original languageEnglish (US)
Title of host publicationElsevier Geo-Engineering Book Series
PublisherElsevier Ltd
Pages477-482
Number of pages6
EditionC
DOIs
StatePublished - 2004

Publication series

NameElsevier Geo-Engineering Book Series
NumberC
Volume2
ISSN (Print)1571-9960

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All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

Cite this

Elsworth, D., Lee, D. S., Long, H., & Flemings, P. B. (2004). Penetration-induced pore pressure magnitudes - methods to determine transport parameters from terrestrial and marine penetrometer testing. In Elsevier Geo-Engineering Book Series (C ed., pp. 477-482). (Elsevier Geo-Engineering Book Series; Vol. 2, No. C). Elsevier Ltd. https://doi.org/10.1016/S1571-9960(04)80086-7