Poroelastic response around an intrusion

Derek Elsworth, Barry Voight

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations


The pore pressure field induced around a cylindrical intrusion is described as an analogue to a moving point dislocation within an infinite saturated porous elastic solid. Dimensionless pressure rise accompanying intrusion, and recorded at a static location, may be uniquely referenced to the dimension less parameters representing emplacement velocity and time. The resulting pressure transient response may be divided between two groups, representing fast and slow emplacement Where hydraulic parameters representing the host porous medium are known a priori, both emplacement location and the cross-sectional area may be determined uniquely. For slow emplacement the intrusion rate may also be determined while only a lower limiting intrusion rate may be discerned for fast emplacement Two intrusive events at Krafla, Iceland are examined using the proposed moving dislocation model and satisfactory data matches obtained.

Original languageEnglish (US)
Number of pages7
StatePublished - 1991
Event7th International Society for Rock Mechanics and Rock Engineering Congress 1991 - Aachen, Germany
Duration: Sep 16 1991Sep 20 1991


Other7th International Society for Rock Mechanics and Rock Engineering Congress 1991

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geology


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