WEIGHT DROPPING TYPE VIBRATION SOURCE IN HOLE

A plurality of resilient members (38) and a plurality of plate members (40) are alternately superposed one upon another, and a weight (52) is dropped thereonto. The resilient members (38) are deformed due to the impact force of the dropped weight, whereby water in holes formed between the plate memb...

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Bibliographic Details
Main Author OGURA, KIMIO
Format Patent
LanguageEnglish
French
German
Published 27.10.1993
Edition5
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:A plurality of resilient members (38) and a plurality of plate members (40) are alternately superposed one upon another, and a weight (52) is dropped thereonto. The resilient members (38) are deformed due to the impact force of the dropped weight, whereby water in holes formed between the plate members (40) is pushed outwardly, so that elastic waves are generated on the walls of the hole. Une pluralité d'éléments élastiques (38) et une pluralité de disques (40) sont superposés de façon alternée. On fait ensuite tomber un poids (52) sur ledit empilage d'éléments élastiques et de disques. Les éléments élastiques (38) sont déformés sous l'impact dû à la chute du poids, et ainsi l'eau se trouvant dans des espaces formés entre les disques (40) est poussée vers l'extérieur, de façon que des ondes élastiques soient générées sur les parois du trou.
Bibliography:Application Number: EP19920922195