TERRAIN SYSTEMS MAPPING AND GEOMORPHOLOGICAL STUDIES FOR THE CHANNEL TUNNEL RAIL LINK

This paper describes the role of geomorphological studies and terrain systems mapping in formulating and developing ground models for the route of the Channel Tunnel Rail Link (CTRL). The 108km-long CTRL is to be constructed between St Pancras Station, London, and the Channel Tunnel Railway terminal at Cheriton, Kent, England. Its engineering works will include many viaducts and bridges, three major tunnels, several cut-and-cover tunnels, and large sections of cuttings and embankments. A geomorphological approach has been used to help to identify and predict the ground conditions relevant to the CTRL's structures, earthworks, and trackbed. A Geotechnical Management Unit (GMU), set up in 1993, has designed, planned, and implemented: (1) 2.4M pound Phase I and 3.6M pound Phase II packages of 'deep', 'shallow' and contaminated land investigations; (2) a 0.30M pound package of geological and geomorphological field and desk studies; and (3) a geodata reference room. The paper discusses ground model development by terrain systems, geomorphological field mapping, and referencing geological data. It lists several ways in which these geomorphological studies have benefited the CTRL project and its ground investigations. For the covering abstract see IRRD 883023.

Language

  • English

Media Info

  • Pagination: p. 25-38

Subject/Index Terms

Filing Info

  • Accession Number: 00729263
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-7277-2513-0
  • Files: ITRD
  • Created Date: Dec 12 1996 12:00AM