Instrumented rock bolt, data logger and user interface system

A rock bolt includes a hollow body and a gap along a length of the hollow body. At least one strain gauge is affixed to an inner surface of the rock bolt and is accessible from the gap. The rock bolt may include a data logger within the hollow body and coupled to receive signals from one or more str...

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Bibliographic Details
Main Authors SUNDERMAN CARL B, JOHNSON JEFFREY CRAIG, SIGNER STEVE P
Format Patent
LanguageEnglish
Published 29.01.2008
Subjects
ALARM SYSTEMS
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
ORDER TELEGRAPHS
PHYSICS
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
SHAFTS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TUNNELS
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Summary:A rock bolt includes a hollow body and a gap along a length of the hollow body. At least one strain gauge is affixed to an inner surface of the rock bolt and is accessible from the gap. The rock bolt may include a data logger within the hollow body and coupled to receive signals from one or more strain gauges, and to record these signals in a memory. The data logger may comprise a data port adapted to be accessible from the outside of a bore hole into which the rock bolt is inserted. The data logger also may include at least one of a visual and auditory alarm. A graphic user interface software program can be used to download data from the data logger and set certain operating parameters of the data logger.
Bibliography:Application Number: US20040499299