Logging for Diametric Variation of Stone Columns Using Crosshole Seismic Tests

An integrity testing for stone columns was attempted using crosshole S-wave logging. The method is conceptually quite similar to the crosshole sonic logging (CLS) for drilled piers. The critical difference in the logging is the use of s-wave rather than p-wave, which is used in CSL, because s-wave is the only wave sensing the stiffness of slower unbounded materials than water. An electro-mechanical source, which can generate reversed S-wave signals, was utilized in the logging. The stone column was delineated from the S-wave travel times across the stone column, and taking S-wave velocities of the crushed stone and surrounding soil into account. The volume calculated from the diametrical variance delineated is very close to the actual quantity of the stone filled.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 77-82
  • Monograph Title: Recent Advancement in Soil Behavior, In Situ Test Methods, Pile Foundations and Tunneling: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01140960
  • Record Type: Publication
  • ISBN: 9780784410448
  • Files: TRIS
  • Created Date: Sep 16 2009 4:19PM