Estimating the Wet-Rock P-Wave Velocity from the Dry-Rock P-Wave Velocity for Pyroclastic Rocks


KAHRAMAN S. , FENER M., KILIÇ C. Ö.

PURE AND APPLIED GEOPHYSICS, cilt.174, ss.2621-2629, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 174 Konu: 7
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/s00024-017-1561-7
  • Dergi Adı: PURE AND APPLIED GEOPHYSICS
  • Sayfa Sayıları: ss.2621-2629

Özet

Seismic methods are widely used for the geotechnical investigations in volcanic areas or for the determination of the engineering properties of pyroclastic rocks in laboratory. Therefore, developing a relation between the wet- and dry-rock P-wave velocities will be helpful for engineers when evaluating the formation characteristics of pyroclastic rocks. To investigate the predictability of the wet-rock P-wave velocity from the dry-rock P-wave velocity for pyroclastic rocks P-wave velocity measurements were conducted on 27 different pyroclastic rocks. In addition, dry-rock S-wave velocity measurements were conducted. The test results were modeled using Gassmann's and Wood's theories and it was seen that estimates for saturated P-wave velocity from the theories fit well measured data. For samples having values of less and greater than 20%, practical equations were derived for reliably estimating wet-rock P-wave velocity as function of dry-rock P-wave velocity.