Gampel, Schweiz

Construction of the Riedberg Tunnel had to be stopped in 2005, when the displacements measured in the tunnel and on the surface increased continuously. Extensive measures were required to stabilize the slope. BAUER Spezialtiefbau Schweiz AG, as part of the TURI Consortium (Walo Walpen Bauer), stabilized the slope at the western portal of the future Riedberg Tunnel in Gampel with roughly 37,500 m³ of jet grouting columns.