A Borehole Seismic Source And Its Application To Measure In-Situ Seismic Wave Velocities Of Geo-Materials

Keywords

Borehole seismic source; Cross-hole test; In-hole test; Poisson[U+05F3]s ratio; SH-wave; TahcBalm

Abstract

A borehole seismic source was developed to measure horizontally-polarized shear (SH-) waves in the near surface and to improve drawbacks of conventional seismic sources. An electro-mechanical-type source, called "TahcBalm", has exceptional repeatability in generating signature SH-waves, while being sufficiently small and light to be fitted in 76 mm diameter cased or uncased boreholes. The source has been extensively used for borehole seismic testing at various locations with diverse soil and rock conditions. The cross-hole and in-hole testing signals are strong enough and allow the clear identification of the first arrival of SH-waves in all tested geologic environments. TahcBalm generates SH-waves with proper wavelength of about 1 m and 0.5 m for cross-hole and in-hole testing configurations respectively, at soil and rock sites. The source performs well in terms of data quality and ease of use.

Publication Date

1-1-2016

Publication Title

Soil Dynamics and Earthquake Engineering

Volume

80

Number of Pages

127-137

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.soildyn.2015.10.011

Socpus ID

84947596470 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84947596470

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