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Title:
GROUND SURVEYING METHOD AND GROUND SURVEYING APPARATUS USING ROTARY PERCUSSION DRILL
Document Type and Number:
Japanese Patent JP2007070870
Kind Code:
A
Abstract:

To provide a ground surveying method of efficiently carrying out ground strength measurement and core collection, and to provide a ground surveying apparatus.

The ground surveying method using a rotary percussion drill is carried out by exchanging an inner bit of the percussion drill for a sampler for sampling a core of the ground, and thereafter applying a predetermined thrust force and a predetermined continuous driving force from a driving section to the sampler which is kept abutting on the ground via its tip, to thereby penetrate the sampler into the ground. According to the method, the ground strength is brought into correspondence with a penetration speed.


Inventors:
SHIBATA AZUMA
NAKANO YOSHIHITO
KIYAMA RYUJIRO
IKEMORI SATOSHI
IMAMURA DAISUKE
BABA SHINYA
Application Number:
JP2005258405A
Publication Date:
March 22, 2007
Filing Date:
September 06, 2005
Export Citation:
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Assignee:
KOWA CO
KOKEN BORING MACHINE CO
ENDLESS LINE KK
International Classes:
E02D1/04; E21B25/00; G01N3/40
Domestic Patent References:
JPS5123199B21976-07-15
JPH07247783A1995-09-26
JPH09242459A1997-09-16
Attorney, Agent or Firm:
Kyosei International Patent Office