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Title:
METHOD OF EXAMINING UNDERGROUND OF UNDERGROUND STRUCTURE, AND METHOD OF EXAMINING AND REPAIRING IT
Document Type and Number:
Japanese Patent JP3820652
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To visually observe the state of the underground without boring a structure by progressing a metal pipe toward an underground structure by the application of a pipe bender, and inserting a micro television camera into the ground through the metal pipe.
SOLUTION: A ground 4 is drilled to a prescribed depth by drilling water and excavation by a top bit, and a casing pipe 1 is penetrated. A pipe bender 4 is inserted and set in the resulting shaft. A metal pipe 5 is then pushed into the insert hole 4c of a die part 4b through the holder hole 4a of the pipe bender 4. The pipe 5 is bent during passing and circularly progressed in a horizontal part 5A. The top end reaches the lower end surface of a foundation 2. A television camera 8 is protruded from the top of the metal pipe 5 to project the state to a television on the ground. When a cavity 9 is confirmed, the camera 8 is recovered, and grout injection is performed by use of an injection passage. The injection is performed while extracting air from the cavity 9. Thus, an examination can be performed without having a bad effect on a structure, and a repairing can be successively performed.


Inventors:
Miyazaki Yasuo
Akira Kande
Masaaki Ohinata
Hirohisa Tanimuro
Application Number:
JP31030196A
Publication Date:
September 13, 2006
Filing Date:
November 21, 1996
Export Citation:
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Assignee:
Osaka Waterproof Construction Co., Ltd.
International Classes:
E02D1/08; E02D37/00; (IPC1-7): E02D1/08; E02D37/00
Domestic Patent References:
JP5087945A
JP3093991A
JP8277522A
JP61056756A
Attorney, Agent or Firm:
Eiji Saegusa
Kakehi Yuro
Takeshi Ohara
Hiroji Nakagawa
Yasumitsu Tate