METHOD FOR REMOVING EXISTING LINE

摘要

PROBLEM TO BE SOLVED: To provide an easily executable method for removing an existing line by using a simple facility, etc. SOLUTION: This method for removing an existing line K comprises (1) a first process for laying around the existing line a propulsion pipe S having a larger diameter than the existing line K and for removing the existing line located inside the propulsion pipe, and (2) a second process for attaching a bulkhead 30 to the end of the propulsion pipe, pulling out the propulsion pipe, and filling a cavity portion V on the back of the propulsion pipe with a filler B.