Düker Nord-Ostsee-Kanal: Los 1 - Tunnelbauwerk inkl. Medienleitungen und Kabel

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The Kiel municipal utilities (hereinafter referred to as SWK) plan to modernise and expand the supply capacity and supply reliability in the north of Kiel. The aim is to create a revision-safe and low-maintenance connection for gas, water, district heating, electricity and telecommunications lines. This is to be achieved by constructing a new Düker under the Nord-Ostsee-Kanal for the transport of the above-mentioned media. The overall project “Düker Nord-Ostsee-Kanal” is divided into four lots including the tunnel structure and utility lines (Lot 1), connecting pipelines (Lot 2), technical equipment (Lot 3) and the expansion of the shaft structures (Lot 4). The subject matter of this Lot 1 comprises the tunnel structure including the utility lines and cables to be laid therein, as well as the following described work: a) Construction of an approximately 880 m long tunnel structure DN 3200 with reinforced concrete pipes using the pipe jacking method (microtunnelling) under the Nord-Ostsee-Kanal. b) Construction of the required excavation pits: start excavation pit as a secant pile wall with approximately 11 m depth and approximately 16 m internal diameter; target excavation pit…

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