MADRID METRO EXTENSION

This feature describes and discusses the tunnelling projects in the construction of the Madrid Metro Extension; it includes a route map and statistics about the contract. The first stretch of the Madrid Metro was opened in 1919; the new lines will extend it to eight outer suburbs, and also reach two very important areas, the Juan Carlos I Exhibition Centre and the Madrid-Barajas International Airport, which will be linked to the new Line 8. Madrid's varied geology, including soft ground, made the tunnelling even more of a challenge. Construction was carried out using six earth pressure balance (EPB) machines (EPBMs), four of 9.4mm diameter, one of 7.4m diameter, and one of 6.7m diameter. The tunnels have all been completed, and various lines were opened during 1998; today, all lines have been commissioned or about to be commissioned. The feature includes: (1) a general outline of the construction work; (2) a personal overview of the project from a client viewpoint, including its construction methods and costs; (3) conclusions and recommendations about EPB tunnels; (4) the design of the metro extension, including its alignment, tunnels, and stations; (5) the contract for connecting lines 8 and 10; (6) the Madrid Method of tunnelling, used in Madrid since the 1920s; and (7) EPBM performance.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• Corporate Authors:

  Miller Freeman

  Calderwood Street
  London,   United Kingdom  SE18 6QH
• Authors:
  • MELIS, M J
  • DE MATIAS, M
  • BARRIO, J M
  • Trabada, J
  • GIL, R
• Publication Date: 1999-3

Language

• English

Media Info

• Pagination: IV-XXII
• Serial:
  • Tunnels & Tunnelling International
  • Volume: 31
  • Issue Number: 3
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Construction management; Costs; Design; Excavation; Excavations; Geology; Public transit; Subways; Tunnels; Urban areas
• Uncontrolled Terms: Increase
• Geographic Terms: Spain
• ITRD Terms: 3666: Construction method; 224: Cost; 9011: Design (overall design); 5155: Excavation (process); 4053: Geology; 9032: Increase; 744: Public transport; 8105: Spain; 3374: Tunnel; 1191: Underground railway; 313: Urban area
• Subject Areas: Bridges and other structures; Construction; Design; Finance; Geotechnology; Public Transportation;

Filing Info

• Accession Number: 00765694
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Jul 1 1999 12:00AM