| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal pushing collecting pipe, an internal pushing device, and a jacking method capable of more rationally performing an underground pipeline installation (jacking construction).SOLUTION: An internal pushing collecting pipe 31 includes: an internal pushing outer pipe 41 which is disposed relatively in a front portion; an internal pushing inner pipe 51 which is disposed relatively in a rear portion; and an internal pushing intercalated pipe 61 which is interposed between the front and the back portions. A form of each of the internal pushing outer pipe 41, the internal pushing inner pipe 51, and the internal pushing intercalated pipe 61 can be made straight or bent, and the form of each of the pipes 41, 51, 61 can be arbitrarily changed. An internal pushing device 71 comprises the internal pushing collecting pipe 31 as a main component. A jacking method is performed by using the internal pushing device 71. |
