LINING CONSTRUCTION METHOD OF EXISTING PIPE LINE

Japanese Patent JP3426499

B2

PROBLEM TO BE SOLVED: To provide the lining construction method of an existing pipe line, in which the flow of drain is not hindered by forming a uniformly thick film by sufficiently ensuring a pressure required for pneumatic conveyance.
SOLUTION: In the lining construction method for conducting reclamation repair by coating the internal surface of the existing pipe line 2 with a resin liquid, a suction air-blasting device 5 is connected at one end in the laying direction of the existing pipe line 2 and the inside of the pipe line is kept in a negative pressure or a positive pressure, and the sectional area of a space constituting the passage of the resin liquid is made smaller than that of the inside of the existing pipe line and a core member 6 setting an opening between the core member 6 and the internal surface of the existing pipe line at a small value is arranged into the existing pipe line 2. The speed of pneumatic conveyance in the resin-liquid passage placed in the opening between the core member 6 and the internal surface of the pipe line when the pneumatic conveyance of the resin liquid is performed by an airflow from the suction air-blasting device 5 is made higher than the normal time, and the resin liquid can be applied extending over the whole region of the laying range of the pipe line 2.

Yoshihiro Sugano
Haruo Iwasaki
Kazunori Motomura
Kazuya Hirabayashi
Kenji Ohshima
Yukifumi Kubo
Hideno Hoshino

JP12061198A

July 14, 2003

April 30, 1998

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Tosetsu Co., Ltd.
Kyowa Nissei Co., Ltd.
Hakko Co., Ltd.
Tokyo Gas Co., Ltd.

E03C1/01; B08B9/02; E03C1/122; (IPC1-7): E03C1/122

JP621483A
JP5445349A

Kobashi Shinjun

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