Device for producing sealing floor in ground, used in construction

摘要

A rotatively driven injection tube (30) that runs in an outer tube (18) has a rearward end which is connectable to a pressure source delivering a hardenable suspension. The front end of the injection tube has lateral injection nozzles (31, the injection tube being uncoupled from the injection device so that the vibrations are not transmitted to the injection tube. The vibration unit (19) has a vibration beam (26) with an adapter (27) pressing against the outer tube. The outer tube is movable and has a longitudinal clearance relative to the adapter. The advance feed tool (20) has a point with outlet apertures (20a).