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Title:
軟質土壌調査用の改良されたボール貫入試験機
Document Type and Number:
Japanese Patent JP4642070
Kind Code:
B2
Abstract:
A ball penetrometer probe for in situ measurement of soft soil properties, particularly in the seabed, comprises a spherical body and slender shaft assembly, and either individually or in combination, an anti-friction sleeve enclosing the shaft and/or a peripheral porous ring on the spherical body with connecting internal passages through the shaft assembly, the shaft being adapted to attach to an electronic transducer module. The ball penetrometer is deployed to penetrate the soil bed, to continuously measure the soil bearing forces resisting penetration and withdrawal of the ball, to optionally measure the pore water pressure of the soil in contact with the ball and to transmit the measurement data from the probe to a remote operating station, either by wireless means such as an acoustic transducer or via a wired electrical connection.

Inventors:
Patrick Joseph Kelher
Steven David Payer
James Austin Shields
Application Number:
JP2007504209A
Publication Date:
March 02, 2011
Filing Date:
February 25, 2005
Export Citation:
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Assignee:
BENTHIC GEOTECH PTY LTD
International Classes:
G01N3/40; E02D1/02; E21B49/00; G01N3/00; G01N3/06; G01N3/42
Domestic Patent References:
JP2005350873A
JP2005232715A
JP2003149066A
JP4329336A
Foreign References:
US20050076709
Attorney, Agent or Firm:
Hiroshi Yamazaki
Yasushi Ohata