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A platform for research: civil engineering, architecture and urbanism
Determination of incipient roof failures in rock tunnels by micro-seismic detection
Instrument by which microseismic activity of tunnel roof can be determined, and areas of impending failure located; microseismic detection; geophone of apparatus uses piezoelectric action of quartz crystal to develop voltage resulting from elastic movement; amplifier brings voltage into audible range; characteristic sounds of different rocks.
Determination of incipient roof failures in rock tunnels by micro-seismic detection
Instrument by which microseismic activity of tunnel roof can be determined, and areas of impending failure located; microseismic detection; geophone of apparatus uses piezoelectric action of quartz crystal to develop voltage resulting from elastic movement; amplifier brings voltage into audible range; characteristic sounds of different rocks.
Determination of incipient roof failures in rock tunnels by micro-seismic detection
Boston Soc Civ Engrs -- J
Crandell, F.J. (author)
1955
21 pages
Article (Journal)
English
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