Railway Tunnel Alptransit Gotthard,
ARGE Transco Sedrun
Batigroup AG Tunnelbau,
Impresa Pizzarotti & C.S.p.
The "Sedrun Section" of the Gotthard Basistunnel encompasses two tunnels that are each 6,2 kilometres long and supplied through a 800m deep mine shaft. Two tunnels are at the base of the shaft and each breaks through to the north and south in the conventional manner.
The project tunnels through the unstable rock of the Tavetscher Zwischenmassiv with an up to 2.000m overlay. One of the two multifunctional sections of the 57 km long Gotthardbasis Tunnel is also being built in the Sedrun section.
Pumping off the abrasive water that collects during the tunnelling excavations.
Use of the current 80+ Tsurumi wastewater submersible pumps for complete drainage. Pump series used: KTZ, KRS, KTV, LH, KRS with agitator.