INJECTOR OF GROUND IMPROVING MATERIAL

Japanese Patent JP2004232204

A

To provide an injector surely locked on a prescribed position.

This injector 10 is inserted inside an outer tube 12 buried in the ground, and is used for injecting an injection material. The injector 10 has an injector body 14 arranged in the outer tube 12 and a lock mechanism 16 connected to the rear of a body 14. The body 14 has an injection inner tube 18 arranged on the axis, opening an injection material delivery port on the tip and supplying the injection material from an upper part and an independent packer 20 brought into close contact with an inside surface of the outer tube 12 by diametrally expanding by injection of fluid and separating from the inside surface of the outer tube 12 by removal of the fluid. The lock mechanism 16 is put in either state of a lock state of regulating the shaft directional movement of the injector body 14 by being brought into pressure contact with the inside surface of the outer tube 12 when injecting the injection material and an unlocking state of allowing the shaft directional movement of the injector body 14 by separating from the inside surface of the outer tube 12 when inserting and extracting the injector 10.

JP3713603	METHOD AND DEVICE FOR MONITORING OF LIQUID INJECTED SITUATION
JPS58185623	【考案の名称】地盤改良用簡易短ぐい
JP5873715	Ground injection material mixed with seawater and ground improvement method

ONISHI YASUYUKI
HAMADA TAKASHI
MATSUDA YASUNORI
MATSUO KAZUHIKO
KAMIIDE AKIRA
TANIMURO HIROHISA

JP2003018359A

August 19, 2004

January 28, 2003

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OHBAYASHI CORP
KAMEYAMA CO LTD
INTES CO LTD

E02D3/12; (IPC1-7): E02D3/12

Masatoshi Matsumoto

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