Simultaneous monitoring of stress and strain in massive rock

Gladwin M.T. (1977) Simultaneous monitoring of stress and strain in massive rock. Pure and Applied Geophysics PAGEOPH, 115 1-2: 267-274. doi:10.1007/BF01637108


Author Gladwin M.T.
Title Simultaneous monitoring of stress and strain in massive rock
Journal name Pure and Applied Geophysics PAGEOPH   Check publisher's open access policy
ISSN 0033-4553
Publication date 1977
Sub-type Article (original research)
DOI 10.1007/BF01637108
Volume 115
Issue 1-2
Start page 267
End page 274
Total pages 8
Publisher Birkhäuser-Verlag
Subject 1908 Geophysics
1906 Geochemistry and Petrology
Abstract Continuous measurements of ultrasonic pulse transit times over 10 m baselines between fixed points in each of three mutually perpendicular directions are made routinely in solid rock. The most significant current experiment is in a large underground support pillar (30 m×30 m×200 m high) 700 m below ground level in an active mine. Velocity measurements to a precision of 2 parts in 106 allow stress changes of order 1 kPa to be monitored, and compared with simultaneous strain measurements (for which a capacitance strain sensor is used) to examine the mechanisms of large scale stress relief processes. Characteristic stress relief cycles (of magnitude 200-3000 kPa) are found to migrate through the pillar as impressed loads are accommodated by the rock mass.
Keyword Creep
Seismic velocity anisotropy
Stress in situ
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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