Diaphragm wall cutter
A trench wall cutter is a construction site device for making a bottom slot for a diaphragm wall .
functionality
When cutting trench walls, two cutting wheels running in opposite directions usually loosen the material, mix it with the suspension in the trench and convey it to the suction opening of the solids pump .
The milling machine is attached to a carrier. The milled material is shredded before it enters the pump in such a way that the material is transported through the pipe system without clogging during hydraulic conveyance. The suspension mixed with this soil material is pumped to a treatment plant. There it is cleaned and fed back to the slot with a pump. The processing plant has the task of removing the soil parts from the suspension in order to use them again. The output of the processing plant must be dimensioned greater than that of the milling machine.
As a rule, excavators on crawler tracks with a weight of 50 to 150 t are used as carrier devices for the often very heavy milling machines. The milling cutter and other necessary attachments are mounted on these basic units. The basic device can be a commercially available, heavy hydraulic or rope excavator . Compact devices are suitable for tight construction site conditions. The hydraulic drive power of the basic device should be sufficiently dimensioned to operate the milling machine.
literature
- Conrad Boley: Handbook of geotechnics . Vieweg + Teubner, Wiesbaden 2012, p. 8 ( online at Google Books )
- Heinrich Otto Buja: The original manual of special civil engineering . Volume 2, Eigenverlag / BoD, pp. 806–819 ( online at Google Books )