Seismic shear wave vibrator with telescoping blade

Details Seismic shear wave vibrator with telescoping blade Seismic shear wave vibrator with telescoping blade

1987-01-05

1988-04-05

Jordan, Charles T.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181114, 181121, 367 75, G01V 102

Patent

active

047352809

ABSTRACT:
This invention is an improved type of shear wave vibrator are carried by a support vehicle and utilizing telescoping tubes for energy engagement within an underlying earth medium. A shear wave vibrator so constructed is particularly desirable for use over marshy or soft surface earth areas. The device consists of a jack assembly supporting a shear wave vibrator relative to a suitable carrier vehicle in vibrationally isolated manner. The vibrator structure consists of a pair of parallel, elongatable telescoping blades for earth penetration and engagement with a passive reaction mass pivotally secured across the top portion of the telescoping blades and an active mass/vibrator system pivotally secured across the lower portion of the telescoping blades adjacent the earth surface.

REFERENCES:
patent: 4135598 (1979-01-01), Stafford
patent: 4334592 (1982-06-01), Fair
patent: 4639905 (1987-01-01), Goodloe

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