JPS646591A - Method of replacing existing main pipe with novel main pipe - Google Patents

Method of replacing existing main pipe with novel main pipe

Info

Publication number
JPS646591A
JPS646591A JP62160480A JP16048087A JPS646591A JP S646591 A JPS646591 A JP S646591A JP 62160480 A JP62160480 A JP 62160480A JP 16048087 A JP16048087 A JP 16048087A JP S646591 A JPS646591 A JP S646591A
Authority
JP
Japan
Prior art keywords
excavator
tube
new
old
hollow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62160480A
Other languages
Japanese (ja)
Inventor
Kenji Kondo
Masataka Fukami
Takezo Yoshimura
Norio Douman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kurimoto Ltd
Original Assignee
Kurimoto Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kurimoto Ltd filed Critical Kurimoto Ltd
Priority to JP62160480A priority Critical patent/JPS646591A/en
Publication of JPS646591A publication Critical patent/JPS646591A/en
Pending legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

PURPOSE: To attempt an exchange of the old tube for a new one without digging the surface of the earth by making positive pressure within the hollow tunnel forward by breaking the old tube by an excavator, holding the hollow state inside with the application of pressure and subsequently inserting the new one into the hollow tunnel. CONSTITUTION: An excavator 2 having a drum larger in external diameter than that of an old tube 1, is advanced forward with the application of impactive force by means of an air hammer and the like to break the old one 1. When the excavator 2 enters in the ground, a blocking board 7 is attached and controls the discharge of air exhaust of the excavator 2. By utilizing this force of the air exhaust, the old tube 1 is removed by advancing the excavator, taking caution not to damage the hollow part. When the excavator 2 arrives at the destination pit K2 , the excavator 2, etc., is withdrawn. As for a new tube, the new tube is installed with the leading end forward, being pushed into the hollow by means of a jack. As a result, it makes a long-distance operation possible. Furthermore, as there is no need for integrating an excavator and a new tube, etc., it facilitates an easy operation.
JP62160480A 1987-06-26 1987-06-26 Method of replacing existing main pipe with novel main pipe Pending JPS646591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62160480A JPS646591A (en) 1987-06-26 1987-06-26 Method of replacing existing main pipe with novel main pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62160480A JPS646591A (en) 1987-06-26 1987-06-26 Method of replacing existing main pipe with novel main pipe

Publications (1)

Publication Number Publication Date
JPS646591A true JPS646591A (en) 1989-01-11

Family

ID=15715862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62160480A Pending JPS646591A (en) 1987-06-26 1987-06-26 Method of replacing existing main pipe with novel main pipe

Country Status (1)

Country Link
JP (1) JPS646591A (en)

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