Soil displacements were measured during the construction of two 21-ft OD shield-driven tunnels in principally granular soil for the Washington, D.C. Metro. The program of field observations and measurements was implemented to determine the relationship of construction procedure to ground movements about the tunnels. Inclinometers, extensometers, and surface settlement surveys measured the soil displacements at three instrument cross-sections in the Lafayette Park Test Section. The soil displacements were measured at a sufficient number of points at each cross-section such that the complete pattern of ground movements at different stages of construction could be determined.

  • Supplemental Notes:
    • Prepared in cooperation with DeLeuw, Cather and Co., Washington, D.C.
  • Corporate Authors:

    University of Illinois, Urbana-Champaign

    Department of Civil and Environmental Engineering
    205 North Mathews Avenue
    Urbana, IL  United States  61801-2352

    Washington Metropolitan Area Transit Authority

    950 l'Enfant Plaza, SW
    Washington, DC  United States  20006

    De Leuw, Cather and Company

    Denver, CO  United States 
  • Authors:
    • Hansmire, W H
    • Cording, E J
  • Publication Date: 1975-9

Media Info

  • Pagination: 359 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00094295
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: UILU-ENG-75-2021 Final Rpt.
  • Files: TRIS
  • Created Date: Mar 29 1981 12:00AM