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http://dx.doi.org/10.7843/kgs.2007.23.11.27

Development of Automatic Shear-wave Source for Downhole Seismic Method  

Bang, Eun-Seok (Geotechnical Engrg. Division, KIGAM)
Sung, Nak-Hoon (Geotechnical Engrg. Division, KIGAM)
Kim, Jung-Ho (Geotechnical Engrg. Division, KIGAM)
Kim, Dong-Soo (Dept. of Civil&Environmental Engrg., KAIST)
Publication Information
Journal of the Korean Geotechnical Society / v.23, no.11, 2007 , pp. 27-37 More about this Journal
Abstract
Downhole seismic method is very economic and easy to operate because it uses only one borehole and simple surface source to obtain the shear wave velocity profile of a site. In this study, automatic shear wave source was developed for efficient downhole seismic testing. This source is motor-spring type and easy to control. It can lessen the labor of operator and the working time. Moreover, it can provide better and repetitive signals for data interpretation. By combining developed automatic source with automatic receiver system, PC based data acquisition system, advanced managing program, and semi-automatic downhole performing system were constructed. Through comparison test with manual source, advantages of automatic source were verified. Constructed semi-automatic downhole testing system including automatic shear wave source was applied to the soft soil site. The applicability and reliability were verified and the importance of automating testing system for obtaining reliable result was emphasized.
Keywords
Automatic shear wave source; Downhole seismic method; Field testing equipment; Site characterization;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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