Title:
METHOD AND DEVICE FOR GROUND IMPROVEMENT QUALITY MANAGEMENT
Document Type and Number:
Japanese Patent JP2015214838
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method and a device for ground improvement quality management capable of easily and accurately performing quality management when executing improvement of soft ground.SOLUTION: A method for ground improvement quality management: allows a penetration cone 10 to be penetrated into improved ground; stops penetration operation of the penetration cone 10 at respective predetermined penetration depths; injects water into the ground to be improved through a water discharge port 12 installed at a tip section of the penetration cone 10 while changing a flow rate of the water; measures discharge pressure of the water discharged through the water discharge port 12; obtains coefficients of permeability at the respective penetration depths on the basis of a relation between the flow rate of the water and the discharge pressure thereof; compares the obtained coefficients of permeability at the respective depths with predetermined control values thereof; and determines that ground improvement is appropriately executed when the measured coefficients of permeability satisfy the control values.
Inventors:
TEZUKA HIROAKI
YAMAUCHI TAKAHIRO
KAWANISHI ATSUSHI
SAKAFUJI YUTA
YAMAUCHI TAKAHIRO
KAWANISHI ATSUSHI
SAKAFUJI YUTA
Application Number:
JP2014098266A
Publication Date:
December 03, 2015
Filing Date:
May 12, 2014
Export Citation:
Assignee:
MAEDA CONSTRUCTION
International Classes:
E02D3/12; E02D1/00
Domestic Patent References:
JPH05346017A | 1993-12-27 | |||
JP2001241031A | 2001-09-04 | |||
JPH04294276A | 1992-10-19 | |||
JP2013087572A | 2013-05-13 | |||
JPS63165789A | 1988-07-09 |
Foreign References:
US20100315103A1 | 2010-12-16 |
Attorney, Agent or Firm:
Yoshihide Ogawa