| 摘要 |
<p>According to the invention, a sealing system with several sealing rings (5, 5a, 7) is provided on the connection pieces of jacking pipes (10, 11). The system has a leakage testing system whereby testing means are inserted into the pipeline (8a) and into the intermediate spaces (6, 35); and the sealing means are post-pressed through the feed sections (25, 26, 27) into the cavities of the sealing rings and the intermediate spaces (6, 35).</p> |
