Geophysical process monitoring in scaled models

Jong-Sub Lee, J. Carlos Santamarina, Zhihua Li, Bruce L. Kutter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Soil characterization and process monitoring in small-scale tests such as 1g models, shake table and centrifuge models can be effectively conducted with complementary elastic and electromagnetic waves. Small changes in P-wave impedance permit developing Pwave reflection imaging. Its implementation using ultrasound in small-scale soil models is attained by optimizing the operating frequency and selecting the proper transducers. The technique permits detecting layers and inclusions in submerged soils with submillimeter resolution. S-wave velocity depends on the shear stiffness of the skeleton. Shear wave propagation gains particular relevance in the characterization of uncemented soils where stiffness is stress dependent. Bender elements are excellent transducers for S-waves due to their outstanding soil-transducer coupling and their high frequency response. The installation can be designed to gather tomographic data. The electrical conductivity of a soil depends on the conductivity of the pore fluid, porosity and the soil specific surface. High-resolution electrical resistivity profiles are determined using an electrical needle probe. These profiles provide detailed information regarding the spatial variability of the soil mass with millimeter resolution. Resistivity measurements are extended to noninvasive electrical resistance tomography to produce images that correlate to density distribution, contaminant concentration, and/or anomaly detection.

Original languageEnglish
Title of host publicationProceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment
Pages711-715
Number of pages5
Volume2
Publication statusPublished - 2005 Dec 1
Externally publishedYes
Event16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, ICSMGE 2005 - Osaka, Japan
Duration: 2005 Sep 122005 Sep 16

Other

Other16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, ICSMGE 2005
CountryJapan
CityOsaka
Period05/9/1205/9/16

Fingerprint

process monitoring
Process monitoring
Soils
monitoring
transducers (equipment)
soil
transducer
electrical resistance
S-wave
Transducers
shears
stiffness
electrical resistivity
Stiffness
centrifuges
soil heterogeneity
tomography
impedance
Acoustic impedance
Shear waves

ASJC Scopus subject areas

  • Soil Science
  • Geotechnical Engineering and Engineering Geology

Cite this

Lee, J-S., Carlos Santamarina, J., Li, Z., & Kutter, B. L. (2005). Geophysical process monitoring in scaled models. In Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment (Vol. 2, pp. 711-715)

Geophysical process monitoring in scaled models. / Lee, Jong-Sub; Carlos Santamarina, J.; Li, Zhihua; Kutter, Bruce L.

Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment. Vol. 2 2005. p. 711-715.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lee, J-S, Carlos Santamarina, J, Li, Z & Kutter, BL 2005, Geophysical process monitoring in scaled models. in Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment. vol. 2, pp. 711-715, 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, ICSMGE 2005, Osaka, Japan, 05/9/12.
Lee J-S, Carlos Santamarina J, Li Z, Kutter BL. Geophysical process monitoring in scaled models. In Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment. Vol. 2. 2005. p. 711-715
Lee, Jong-Sub ; Carlos Santamarina, J. ; Li, Zhihua ; Kutter, Bruce L. / Geophysical process monitoring in scaled models. Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment. Vol. 2 2005. pp. 711-715
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