MACHINE AND METHOD FOR GROUND INVESTIGATION

Japanese Patent JP2017210731

A

PROBLEM TO BE SOLVED: To provide a ground investigation machine and a ground investigation method capable of accurately determining soil and other properties, by detecting vibration of a penetration body at high accuracy.SOLUTION: A ground investigation machine includes: a penetration body 10 having a rod 12 and a screw point 11 fitted on an edge side of the rod, the penetration body being penetrated into a ground surface with a tip of the screw point 11 pointed downward; loading devices 32, 35 for exerting a load on the penetration body 10 in a direction of penetration thereof; a rotary device 33 for rotating the penetration body 10 around an axis CL1 of the rod 12; and measuring devices 25, 51, 52 for measuring a penetration depth and the number of rotations of the penetration body 10. The measurement device 25 includes a vibration detector 53 for detecting vibration of the penetration body 10. The vibration detector 53 is detachably fitted on a top edge of the penetration body 10 and rotatably with respect to the penetration body 10. The configuration enables the vibration of the penetration body 10 to be detected at high accuracy, and soil and other properties to be determined accurately using the vibration information.SELECTED DRAWING: Figure 1

NIHEI ETSUO
KOZUKA TOSHIAKI

JP2016102694A

November 30, 2017

May 23, 2016

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NIHEI WORKS CO LTD
HYAS & CO INC
GROUND WORK CO LTD

E02D1/02; G01N3/40

JP2003253659A	2003-09-10
JP2003082647A	2003-03-19
JP2002371542A	2002-12-26
JP2004347490A	2004-12-09
JP2004211523A	2004-07-29
JP2004132103A	2004-04-30
JPS63279140A	1988-11-16
JPH06336719A	1994-12-06

US4166508A

1979-09-04

Masahisa Otake

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