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Unbundling OXEA, Oberhausen

  • Specialised civil engineering
  • Eiffage Infra-Spezialtiefbau

Client

Emschergenossenschaft

Project volume

1.6 million EUR

Construction time

7 months

Microtunnelling with compressed air cushion, from the site of the chemical company OXEA Ruhrchemie under the Emscher river

  • Microtunnelling DN 1800
  • AVN-D machine (automatic wet tunnelling machine with compressed air cushion)
  • Undercrossing of the Emscher with a minimum overburden of 1.60 m
  • Strongly fluctuating water levels of the Emscher
  • 3 press pits were tendered under strict conditions of the Oxea Ruhrchemie plant
  • Underpassing a settlement-sensitive gas pipeline from Open Grid Europe
  • Subsoil: sand and gravel