Self-contained instrument for measuring subterranean tunnel wall deflection
Abstract
The deflection of a subterranean tunnel is measured with a rod-like, self-contained instrument that is adapted to be inserted into a radially extending bore of the tunnel adjacent an end of the tunnel where the tunnel is being dug. One end of the instrument is anchored at the end of the bore remote from the tunnel wall, while the other end of the intrument is anchored adjacent the end of the wall in proximity to the tunnel wall. The two ends of the instrument are linearly displaceable relative to each other; the displacement is measured by a transducer means mounted on the instrument. Included in the instrument is a data storage means including a paper tape recorder periodically responsive to a parallel binary signal indicative of the measured displacement.
- Inventors:
-
- Kennewick, WA
- (Richland, WA)
- Issue Date:
- Research Org.:
- Battelle Memorial Institute, Columbus, OH (United States)
- OSTI Identifier:
- 863098
- Patent Number(s):
- 4091990
- Assignee:
- United States of America as represented by Secretary of (Washington, DC)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21F - SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
- DOE Contract Number:
- AC06-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- self-contained; instrument; measuring; subterranean; tunnel; wall; deflection; measured; rod-like; adapted; inserted; radially; extending; bore; adjacent; dug; anchored; remote; intrument; proximity; linearly; displaceable; relative; displacement; transducer; means; mounted; included; data; storage; including; paper; tape; recorder; periodically; responsive; parallel; binary; signal; indicative; means including; data storage; radially extending; signal indicative; storage means; means mounted; self-contained instrument; subterranean tunnel; /234/83/
Citation Formats
Rasmussen, Donald Edgar, and Hof, Jr., Peter John. Self-contained instrument for measuring subterranean tunnel wall deflection. United States: N. p., 1978.
Web.
Rasmussen, Donald Edgar, & Hof, Jr., Peter John. Self-contained instrument for measuring subterranean tunnel wall deflection. United States.
Rasmussen, Donald Edgar, and Hof, Jr., Peter John. Sun .
"Self-contained instrument for measuring subterranean tunnel wall deflection". United States. https://www.osti.gov/servlets/purl/863098.
@article{osti_863098,
title = {Self-contained instrument for measuring subterranean tunnel wall deflection},
author = {Rasmussen, Donald Edgar and Hof, Jr., Peter John},
abstractNote = {The deflection of a subterranean tunnel is measured with a rod-like, self-contained instrument that is adapted to be inserted into a radially extending bore of the tunnel adjacent an end of the tunnel where the tunnel is being dug. One end of the instrument is anchored at the end of the bore remote from the tunnel wall, while the other end of the intrument is anchored adjacent the end of the wall in proximity to the tunnel wall. The two ends of the instrument are linearly displaceable relative to each other; the displacement is measured by a transducer means mounted on the instrument. Included in the instrument is a data storage means including a paper tape recorder periodically responsive to a parallel binary signal indicative of the measured displacement.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1978},
month = {Sun Jan 01 00:00:00 EST 1978}
}