| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve workability in construction and to shorten a term of works of the construction in executing dividing/taking-out work on piping laid in a split sheath pipe obtained by splitting an overage pipe in the ground. <P>SOLUTION: This auxiliary tool 10 is used in executing dividing/taking-out work on the piping laid in the split sheath pipe obtained by splitting the overage pipe in the ground along the pipe shaft, and comprises an elastic insertion guide piece 11 capable of being inserted between the split sheath pipe 1 and the piping 2, a pillow member 12 provided with the elastic insertion guide piece 11 at its one end, having the shape of flat bag when it is not expanded, and provided with an elastic expansion bag 12A inside, and a pressure supply tube 13 derived from the other end of the pillow member 12 for supplying pressure to the elastic expansion bag 12A. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
