Detached rock evaluation device
- Golden, CO
A rock detachment evaluation device (10) having an energy transducer unit 1) for sensing vibrations imparted to a subject rock (172) for converting the sensed vibrations into electrical signals, a low band pass filter unit (12) for receiving the electrical signal and transmitting only a low frequency segment thereof, a high band pass filter unit (13) for receiving the electrical signals and for transmitting only a high frequency segment thereof, a comparison unit (14) for receiving the low frequency and high frequency signals and for determining the difference in power between the signals, and a display unit (16) for displaying indicia of the difference, which provides a quantitative measure of rock detachment.
- Research Organization:
- National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
- Assignee:
- United States of America as represented by Secretary of Interior (Washington, DC)
- Patent Number(s):
- US 4598588
- OSTI ID:
- 865910
- Country of Publication:
- United States
- Language:
- English
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band
band pass
comparison
converting
detached
detachment
determining
device
difference
display
display unit
displaying
electrical
electrical signal
electrical signals
energy
energy transducer
evaluation
evaluation device
filter
filter unit
frequency
frequency signal
frequency signals
imparted
indicia
measure
pass
pass filter
power
provides
quantitative
quantitative measure
receiving
rock
segment
sensed
sensing
sensing vibrations
signal
signals
subject
transducer
transmitting
unit
vibrations