Title:
METHOD FOR MEASURING WATER PERMEABLE ANISOTROPY OF GROUND
Document Type and Number:
Japanese Patent JP3862595
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing water permeable anisotropy of the ground capable of easily obtaining coefficient of permeability in the horizontal direction of the ground and coefficient of permeability in the vertical direction at a low cost.
SOLUTION: A boring hole is bored in the ground, and a casing pipe is positioned into the boring hole. A hollow pipe having a packer in an interior wall surface is pressed into the ground directly under from the bottom of the boring hole, and after the packer has been expanded, the ground water in the boring hole is pumped up at a specific pumping rate by a lifting pump installed in the casing pipe, water pressure is measured by pressure sensors installed around both up and down ends of the hollow pipe, and the coefficient of permeability kv in the vertical direction is obtained on the basis of the water pressure measure by the pumping rate and both up and down pressure sensors. The hollow pipe is pulled out together with the packer and soil inside thereof to form a naked hole in a mark made by pulling, and the coefficient of permeability in the horizontal direction of the naked hole is obtained by a piezometer method.
Inventors:
Takaaki Shimizu
Masaji Aoki
Kunimitsu Mori
Masaji Aoki
Kunimitsu Mori
Application Number:
JP2002129708A
Publication Date:
December 27, 2006
Filing Date:
May 01, 2002
Export Citation:
Assignee:
TAKENAKA CORPORATION
International Classes:
E02D1/00; E21B33/12; E21B47/06; (IPC1-7): E02D1/00; E21B33/12; E21B47/06
Domestic Patent References:
| JP7198583A |
Attorney, Agent or Firm:
Masahiko Yamana
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