| 摘要 |
The invention relates to an injection pipe for civil engineering which in its anchoring section adjoining the free length is composed of several longitudinal pipe sections which, for positive-locking coupling at both ends, are provided with different and matching coupling elements and have holes in the pipe wall which are distributed in the peripheral direction and are covered by slipped-over rubber sleeves. In known injection pipes, the anchoring section is formed from several longitudinal pipe sections screwed to one another, the manufacture of which is expensive and complicated on account of the matching threads. The slipping-over of the rubber sleeves is difficult on account of the threads. According to the invention, however, provision is made for the coupling elements of each longitudinal pipe section to be formed by a radially and elastically expandable socket with catch recesses at one end and by an insertion point which can be inserted rectilinearly into the socket of the adjoining longitudinal pipe section and has outer detents at the other end.
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