Detached rock evaluation device
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United States of America Patent
Stats
-
Jul 8, 1986
Grant Date -
N/A
app pub date -
Jan 22, 1985
filing date -
Jan 22, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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