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https://onlinepubs.trb.or...ubs/sr/sr171/sr171-015.pdf

The following are identified as areas of concern in tunnel instrumentation: it must be possible to advance the tunnel safely and to maintain the integrity of the opening; construction of the tunnel must not excessively damage adjacent or overlying buildings, streets, or utilities; the tunnel should be capable of withstanding all the influences to which it may be subjected during its lifetime. The measurement systems that can be used in tunnel instrumentation include borehole extensometers and settlement probes, inclinometers, strain gauges, and portable tape extensometers. Future research in instrumentation should be concerned with limiting displacements that can damage nearby structures; instrumentation will be required for larger, shallow openings in rock, soil, and mixed face conditions; improvements are needed in instrument reliability, ease of installation and ability to read instruments; integration of measurement program with field observations and construction and design requirement are seen as beneficial; lastly, there is a need for more literature on the subject for guidance of design engineers, geologists and contractors.

This article appeared in TRB Special Report No. 171, Tunnel Construction: State of the Art and Research Needs. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

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pp 27-28

1977

Transportation Research Board Special Report

Print

Boreholes; Extensometers; Ground settlement; Inclinometers; Instrumentation; Manuals; Measurement; Reliability; Strain gages; Tunneling

Bridges and other structures; Construction; Highways

TRIS, TRB, ATRI

Oct 13 1977 12:00AM

• Contractual Relations in Tunnel Construction
• CUT-AND-COVER TUNNELING
• DRILLING AND BLASTING
• EXOTIC METHODS
• Long-Hole Drilling in Advance of Tunnel Penetration
• MACHINE TUNNELING
• Materials Handling
• PREDRAINAGE METHODS FOR TUNNEL DEWATERING
• PRESSURE GROUTING OF TUNNELS
• SHIELD-DRIVEN TUNNELS WITH OR WITHOUT COMPRESSED AIR
• STRUCTURAL SUPPORTS
• SUNKEN TUBES
• TUNNEL GUIDANCE
• TUNNEL SAFETY
• TUNNELING IN BAD GROUND
• USE OF UNDERGROUND SPACE