Pipe ramming

The Pipe Jacking, also called dynamic ramming technique, is a method to grave without laying of steel pipes.

Method

With the dynamic pile driving steel tubes can be up to 4 m Ø at lengths up to 100 m under roads, railways, rivers etc. be advanced. The rams used for this purpose have a cylindrical shape with a conical head. Ramm or connecting cone provide the non-positive connection to the steel pipe. The piston in the machine housing is with compressed air, from one or more job site compressor, accelerated and pressurized via the connection, the taper vorzutreibende steel pipe.

Problems arising from the use of extreme stress caused by the high impact energy up to 40,000 Nm require one-piece machine housing and thick-walled.

The propulsion soil penetrates successively into the tube. The emptying of the tube takes place after the excavation with water and compressed air or, depending on pipe size manually or by machine.

Scope

The steel pipe jacking is used, for example:

  • In undercrossings of transport routes ( railways, roads, rivers)
  • In pipeline
  • In the manufacture of pipe screens in tunnel and underpasses to 4 m in diameter
  • For vertical inserts eg foundation -ups
  • When Abrammen of piles
  • Reacting the trees for the manufacture of baskets, the root
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