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Title:
CONSTRUCTION METHOD OF IMPROVING OR STRENGTHENING GROUND
Document Type and Number:
WIPO Patent Application WO/1992/021825
Kind Code:
A1
Abstract:
A method of squeezing a self-hardening material of stiff consistency into the ground through a jet pipe inserted into the ground when improving or strengthening the soft ground. While or after softening the ground to be treated by jetting high pressurized water from a high pressurized fluid jetting nozzle provided on the forward end of the jet pipe inserted into the soft ground, the self-hardening material of stiff consistency is squeezed into said softened ground to produce an improved part in the ground. A jet pipe having a jetting part projecting outward from the pipe may be used.

Inventors:
Chida, Shohei (5-10, Matsuba 3-chome Ryugasaki-shi, Ibaraki 301, JP)
Tokoro, Takehiko (465 Shimofujisawa, Iruma-shi, Saitama 358, JP)
Senda, Masatoshi (A2 Sejour Kunitachi, 19-7 Higashi 3-chom, Kunitachi-shi Tokyo 186, JP)
Application Number:
PCT/JP1991/001688
Publication Date:
December 10, 1992
Filing Date:
December 03, 1991
Export Citation:
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Assignee:
Chida, Shohei (5-10, Matsuba 3-chome Ryugasaki-shi, Ibaraki 301, JP)
CHICHIBU CEMENT KABUSHIKI KAISHA c/o Nippon, Kygyo Club (4-6 Marunouchi 1-chom, Chiyoda-ku Tokyo 100, JP)
NIHON SOGO-BOSUI CO., LTD. (20 Sendagaya 4-chome, Shibuya-ku, Tokyo 151, JP)
Tokoro, Takehiko (465 Shimofujisawa, Iruma-shi, Saitama 358, JP)
Senda, Masatoshi (A2 Sejour Kunitachi, 19-7 Higashi 3-chom, Kunitachi-shi Tokyo 186, JP)
International Classes:
E01B2/00; E02D3/12; E02D5/44; (IPC1-7): E02D3/12
Foreign References:
JPS50113013A1975-09-04
JPS6019816A1985-02-01
JPH01102122A1989-04-19
JPS54415A1979-01-05
Other References:
See also references of EP 0541812A1
Attorney, Agent or Firm:
Nagai, Yoshihisa (Tokainihonbashi Bldg, 3-4 Nihonbashihoncho 4-chom, Chuo-ku Tokyo 103, JP)
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