RECENT DEVELOPMENT OF BOREHOLE SEISMIC TESTS
In an extended effort to improve the borehole seismic methods, an in-hole seismic source has been developed and utilized in cross-hole and in-hole seismic measurements. The source has been developed to be fit in three-inch (76 cm) boreholes with key functions including a spring-loaded impact pestle, a servomotor triggering device and a mechanical coupler driven with two servomotors. The spring-servomotor mechanism of the source makes it possible to be used in uncased boreholes as well as cased ones. The source enables to reduce testing cost and to improve the accessibility of borehole seismic methods to practice engineers. Also the source can be incorporated to an in-hole probe for in-hole seismic method, which is performed in a single borehole so that the testing cost could be cut down further. The performance of the source has been evaluated with cross-hole and in-hole measurements at various sites.
In-hole Source Borehole Seismic Methods Shear Wave Velocity
C.S.Park J.Y.Lim C.L.Choi B.C.Kong Y.J.Mok
Research Assistant,Dept.of Civil Eng.,Kyunghee University,Seoul,Korea Senior Researcher,Korea Water Resources Corp.,Daejeon,Korea Senior Engineer,PyungHwa Co.,Ltd.,Anyang,Korea Senior Engineer,Nam Won Keonseol Engineering Co.,Ltd.,Anyang,Korea Professor,Dept.of Civil Eng.,Kyunghee University,Seoul,Korea (corresponding author)
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）