This paper presents practical information for both tunnel designers and constructors on the applications and advantages of in situ measurements of ground displacements during construction of tunnels built in rock. The purpose and meaning of such measurements is outlined and the recommended instrumentation described. Practical information is given for the selection, installation, operation and protection of the monitoring equipment. Results are presented of a one-year long tunnel monitoring program involving sixteen measuring stations in a major railway tunnel. These results are interpreted by taking into account other relevant data recorded during construction, such as rock mass classification, rate of face advance and the amount of support used. The monitoring of tunnel behaviour, by allowing a better assessment of rock mass conditions, tunnel stability and the effectiveness of support measures, results in considerable economic advantages to the owner, better design for the engineer and more efficient construction for the contractor. (A) /TRRL/

  • Corporate Authors:

    Ingram Ocean Systems, Incorporated

    One Shell Square
    New Orleans, LA  United States  70130
  • Authors:
    • Bieniawski, Z T
    • Maschek, R K
  • Publication Date: 1975-10

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 255-264
  • Serial:
    • Volume: 17
    • Issue Number: 10

Subject/Index Terms

Filing Info

  • Accession Number: 00133772
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Aug 23 1976 12:00AM