FOUNDATION STRENGTH MEASUREMENT ANALYSIS SYSTEM

Japanese Patent JP2014234629

A

PROBLEM TO BE SOLVED: To provide, for small-diameter tunnels with around 2 m of diameter, a foundation strength measurement analysis system which comprises a rotary boring machine capable of boring upward and a foundation strength measurement device for measuring hardness of foundations.SOLUTION: A foundation strength measurement analysis system in this invention is provided with: a spindle head 5, which is fixed to the body 3 of a rotary boring machine rotatably around a nearly horizontal shaft and comprises a spindle 6, a feed cylinder 7 which moves the spindle in the vertical direction, a boring rod 10 with its tip being fitted with a drilling bit 11, and a chuck 8 which grips the boring rod and transfers the rotation of the spindle to the boring rod; a depth sensor 20 which measures depths; a rotation sensor 21 which measures the rotation number of the boring rod; a feed hydraulic sensor 22 which measures the feeding pressure of the feed cylinder; and a clock 23, and it is arranged to record in a memory the data that each sensor measures every time the drilling bit 11 has drilled a designated depth section of the ground.

YAMAUCHI MASARU

JP2013116630A

December 15, 2014

June 03, 2013

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TOSETSU DOBOKU CONSULTANT KK

E02D1/02; G01N3/00

JP2001065280A	2001-03-13
JPS56111796A	1981-09-03
JP2013072271A	2013-04-22
JPH1136785A	1999-02-09
JP2005068893A	2005-03-17
JPH0674637U	1994-10-21
JPS64695U	1989-01-05
JPH04138489U	1992-12-25
JPH11193683A	1999-07-21
JP2004132116A	2004-04-30

US20080236853A1

2008-10-02

Koichi Oishi

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