DESIGN CONSIDERATIONS FOR UNDERGROUND STRUCTURES IN ROCK

A rail rapid transit system called the "Metro" system is presently under construction in the Nation's Capital area. The Metro system will involve nearly all types of construction generally used for rapid rail transit projects. About half of the mileage will be underground, comprising approximately 16 miles of rock tunnels, 10 miles of earth tunnels, and nearly 21 miles of cut-and-cover construction in earth. Thus, about one-fifth of the system will be designed as underground structures, namely tunnels and stations, in rock. The paper covers subsurface investigations, ground water conditions, rock characteristics, and design criteria.

• Supplemental Notes:
  • North American Rapid Excavation and Tunneling Conference Proceedings, Chicago, Illinois, 5-7 June 1972.
• Corporate Authors:

  American Institute of Mining, Mettalurgy & Petroleum Engineers

  345 East 47th Street
  New York, NY  United States  10017
• Authors:
  • Bawa, K S
  • Bumani, A
• Conference:
  • North American Rapid Excavation and Tunneling Conference Proceedings, Chicago, Illinois, 5-7 June 1972.
• Publication Date: 1972

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 393-417
• Serial:
  • Volume: 2

Subject/Index Terms

• TRT Terms: Geological surveying; Groundwater; Railroad stations; Rapid transit; Rock mechanics; Tunneling; Tunnels
• Identifier Terms: Washington Metropolitan Area Transit Authority
• Old TRIS Terms: Ground water conditions
• Subject Areas: Bridges and other structures; Railroads; Terminals and Facilities;

Filing Info

• Accession Number: 00051288
• Record Type: Publication
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Mar 18 1974 12:00AM