| 摘要 |
In an apparatus for lining tunnel tubes or galleries with pumped or air-placed concrete by means of a reciprocating-piston concrete pump, the concrete placement funnel is closed with a cover plate to which a suction line with a suction unit is coupled. Here, via a preloading container which can be coupled to and uncoupled from the suction line, the concrete can be received in a remote concrete mixing plant and, after coupling to the suction line, can be discharged to the funnel. Thus in the case of a stationary concrete pump recourse can be had to simple means for advancing the concrete; in particular no extensions of concrete-feed lines are necessary. <IMAGE>
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