| 摘要 |
PURPOSE:To perform a lining on the inner periphery of an existing tube by superposing the side edges of stripes of a spiral tube, connecting the parts by a pin, advancing a spiral tube having small diameter in the installed tube, and then enlarging the diameter of the spiral tube. CONSTITUTION:A spiral tube 10' is inserted from a tube manufacturing machine 20 into a sewage tube 81, and advanced while axially rotating. In this case, since adjacent stripes 10 are prevented from sliding each other by pins 31, the tube 10' is not enlarged in its diameter. When the advancing end of the tube 10' arrives at the end of the tube 81, the end of the tube 10' is fixed to the end of the tube 18, such as by hitting an anchor thereto. The socket 14 of the tube 10' and the connecting rib 13 are slid by driving the machine 20, and the tube 10' is enlarged sequentially from the secured end. The enlarged tube 10' is substantially brought into contact with the inner periphery of the tube 81. |
