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List of products by author: C. Budach
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Reduction of Clogging in Mechanized Tunneling using Additives based on Laboratory Research
Abstract: Clogging on parts of the tunnel boring machine can generally occur according to the properties of the soil in case of tunnel drives with shield machines mainly in clay or silt. Clogging could be e.g. possible at the cutting wheel and in the excavation chamber and could lead to a great influence on the advance speed and thus on the economy of a project. In order to reduce clogging during tunnel...
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Shields Machines in Fine Grained Soils: Results from Laboratory Research to Reduce the Clogging Potential
Abstract: Tunnel drives with EPB- and slurry shields in fine grained soils could lead to clogging e.g. at the cutting tools and in the excavation chamber. During tunnel drives using EPB-shields the clogging potential will be in common reduced by changing the consistency index of the support media in the excavation chamber or using additives. During tunnel drives with slurry shields in common additives...
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Successful EPB-Tunnel Drives with Conditioning Agents based on Laboratory Research
Abstract: For each project with an EPB-Shield and its unique soil conditions it’s required to specify the properties of the conditioning agents as well as the properties of the conditioned soil and to determine and monitor these properties. The testing of conditioning agents and conditioned soils in the laboratory helps to enable a successful tunnel drive. Because of that the most important types of soil...
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U5 East in Hamburg: Geotechnical aspects for separation into homogeneous areas
Abstract: Germanys northern metropole, Hamburg, has big plans to alleviate traffic congestion. Among others, a new 20 km subway line U5 is planned that will connect Hamburg's northwest and northeast with the city center. The first phase of the U5 subway line – U5 East– were commenced in 2021 and will have a length of around 6 km. The soil in the alignment of the U5 East consists of different...
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