Abstract
As part of the West Tangent of the Ring road in Bochum it was necessary to construct, in difficult geological formations, a tunnel with two tubes, each of section 100 m2. Severe limitations were placed on ground subsidence. Since the foundations of residential buildings were immediately adjacent to the tunnel tubes the question of environmental disturbance had a major influence on the choice of construction method. After the roof collapsed a few times the excavation work with a centrally positioned pilot tunnel had to be stopped. As a result of the change to top heading method the encountered geological difficulties could be controlled.
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References
Maidl, B. (1984): Handbuch des Tunnel- und Stollenbaus. Verlag Glückauf, Essen.
Steineheuser, G., Maidl, B. (1982): Projektierung und Wahl des Bauverfahrens aufgrund der geologischen Voruntersuchung, dargestellt am Beispiel des Straßentunnels Westtangente Bochum. Proc. Fachtagung Tiefbau-Genossenschaft, Lüdenscheid.
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Steineheuser, G., Maidl, B. Bochum ring road: Planning and choice of construction method. Rock Mech Rock Engng 18, 63–76 (1985). https://doi.org/10.1007/BF01019599
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DOI: https://doi.org/10.1007/BF01019599