| 摘要 |
<p>In accordance with said method sections of the pipeline are forced through the ground so that a part of it is separated and driven inside said sections and is then removed together with them. As the sections with the ground are progressively removed, the stationary pipeline is then laid. In the device the pipeline sections (5) are forced through the ground (1) by means of a power installation (6) and by means of intermediate hydraulic installations (8) located between the sections (5) having each a cavity connected to the hydraulic system and intended for providing the pressure to the end face of the preceding section, the cavity being formed by two rings (9, 10) rigidly fixed on the preceding section. The end face of the following section provided with a sealing element (13) is inserted into the gap between the rings.</p> |
