Safety securing method in existing pipe and shelter for existing pipe

摘要

PROBLEM TO BE SOLVED: To provide a shelter for ensuring safety inside of an existing pipe that is embedded underground.SOLUTION: A shelter body of a shelter 8 is formed cylindrical and includes an opening in at least one end in an axial direction. The shelter body is divided in a circumferential direction and the axial direction. Divided shelter pieces are carried from the ground through a manhole 2a to a bottom of the manhole 2a. The shelter pieces are connected in the bottom of the manhole 2a or inside of an existing pipe 1, such that the shelter 8 is assembled. The shelter 8 is disposed in such a manner that its axial line extends in a length direction of the existing pipe 1. The shelter 8 is used for e.g., a pipe making process, such that a worker inside of the shelter 8 is enabled to support or monitor pipe making work of a pipe making machine 6.SELECTED DRAWING: Figure 1