Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6771754 | Soil Dynamics and Earthquake Engineering | 2016 | 11 Pages |
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 76Â 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 1Â m and 0.5Â 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.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geotechnical Engineering and Engineering Geology
Authors
Young Jin Mok, Chul Soo Park, Boo Hyun Nam,