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THE ASSESSMENT OF CIVIL HIDDEN DAMAGE USING A HIGH-RESOLUTIONPORTABLE ELECTROMAGNETIC VIBRATOR SEISMIC SOURCE〖JZ)〗 |
SUN Ming 1,LIN Jun 2 |
1.Department of Electrical Information Engineering,Foshan University,Foshan 528000,China; 2.College of Instrumentation & Electrical Engineering,Jilin University,Jilin 130026,China |
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Abstract Shallow seismic reflection survey is more complex than conventional oil exploration because of coherent and random noise, and the most important factors connected with this method are high S/N ratio and high resolution. This paper deals with the key technique of the portable vibrator system, whose correlation and tapper processing can restrain random noise and improve resolution greatly. The vibrator seismic source is of longer duration and generally lower amplitude than dynamite sources, with relatively less damage to ground and nearby structures. Field practice has demonstrated that the portable vibrator system can indeed serve as a nondestructive, controllable and highresolution technique. This technique has already been applied successfully in the field of hydrology as well as civil and environmental engineering.
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Received: 30 October 2008
Published: 15 September 2009
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