TBM excavation for Port Said Road Tunnels started
16.12.2016For the twin tube road tunnel project under the Suez Canal south of Port Said two mixshield TBMs with a diameter of 13 m are used. The tunnels with a length of 2,8 km will be excavated in clay and sand from the launching shafts at the Sinai peninsula. The first machine started end of November. For the tunneling works Wayss & Freytag from Germany is awarded from the construction JV Arab Contractors / Orascom.Geodata has a subcontractor agreement for the geotechnical monitoring and heading surveying.The monitoring program consists of inclinometer, extensometer and piezometer measurements, levelling and optical 3D-displacement monitoring on the surface as well as deformation monitoring and measurements of instrumented segments in the tunnel. The supply of instruments is contracted directly from the JV to Geodata.