Title:
【発明の名称】二重管の推進工法に於ける滑材及び裏込材の注入方法及び注入装置
Document Type and Number:
Japanese Patent JP2817905
Kind Code:
B2
Abstract:
PURPOSE:To easily insert a hose for feeding lubricant and a back filling material, through a through-hole formed between the inner and outer pipes of a duplex pipe in a short time. CONSTITUTION:A winch 9 having a wire 10 is provided to an excavator 8, and a hose 11 is wound on a drum 13 driven by a drive device 12 and laid on the start shaft side. Each advance of a duplex pipe 1 on excavation, the wire is inserted into an through-hole 5 formed in an intermediate layer 4, and is connected at one end to one end (discharge port 15) of the hose. The winch is driven so as to wind up the wire in order to introduce the hose into the through-hole, and accordingly, the hose reaches a position facing a desired check valve 7. Thereafter, a supply device is driven to feed lubricant and a back-filling material so as to be filled into a gap 6 between the duplex pipe and the natural ground 6 through the check valve.
Inventors:
Mitsutoshi Hayashi
Akitaka Fujita
Shingo Nagashima
Makoto Yuyama
Hideki Uno
Akitaka Fujita
Shingo Nagashima
Makoto Yuyama
Hideki Uno
Application Number:
JP24143192A
Publication Date:
October 30, 1998
Filing Date:
August 19, 1992
Export Citation:
Assignee:
Tokyo Gas Co., Ltd.
Iseki Development Machinery Co., Ltd.
Iseki Development Machinery Co., Ltd.
International Classes:
E02B9/06; E02F5/10; E21D9/06; E21D11/00; F16L1/038; (IPC1-7): E21D9/06; E21D11/00
Domestic Patent References:
| JP6091699U |
Attorney, Agent or Firm:
Shukichi Nakagawa (1 person outside)