Tunnel Kulch and Lichtenholz
VP Lichtenfels
Client
DB Netz AG
DB Projekt Bau GmbH, NL Südost, Erfurt, Germany
Contractor
Untertagebau / BeMo Tunnelling (formerly: Beton- und Monierbau)
in Joint Venture
50% in Tunnel-JV (Hochtief-UTB-BeMo Tunnelling)
33.37% in JV NBS Lichtenfels (Hochtief- UTB-BeMo Tunnelling-Bickhardt-Stutz)
Project location
High-speed rail line Ebensfeld-Erfurt, Germany
(VDE 8.1, NBS Ebensfeld-Erfurt, BA 3110, VP Lichtenfels, Bau-km 9,0+90 - 15,1+44), Bad Staffelstein
Start of construction
2009
End of construction
2014
Project total value
110 million €
Geology
Tunnel Kulch: clay and marl, limestone-marl alternation (Early Jurassic – „Lias“), quarternary slope loam
Tunnel Lichtenholz: silty clay/marl/limestone (Lias), sandstone and clay with silty layers (Upper Keuper – „Rhaet“, Middle Keuper – “Feuerletten”); Swelling-parameters (Huder-Amberg) 7.5% - 30%
Technical Data
• Double-track railway tunnels, 1 tube each
• Tunnel Kulch: 1,331 m
o mining: 1,291 m
o emergency gallery: 120 m
o shaft - depth: 14 m
• Tunnel Lichtenholz: 931 m
o mining: 891 m
• Cross-section: 175 m²
• Excavation by drill and blast, excavator
• Execution: NATM
Further project related information
• overburden approx 7 – 27 m
• 175 m rail viaduct (Muehlbachviaduct Untersiemau) and 5 new road bridges (reinforced concrete)
• 1.36 mill. m³ earthworks / 2 mill m³ material mgmt
• groundwater 5 – 25 m above the tunnel crown
• soil stabilisation / structur pillar around 1 km