APPARATUS FOR MONITORING CHANGE IN PHYSICAL-MECHANICAL STATE OF ROCK MASS

摘要

FIELD: physics.;SUBSTANCE: apparatus for monitoring change in the stress condition of a rock mass further includes a control unit, a switching unit and a time selection unit, wherein the input of the control unit is connected to the clock output of a generator, and the outputs to the control unit and the control inputs of the time selection units, wherein each input of the next time selection unit is connected to the output of the previous and corresponding input of the switching unit, and the input of the first time selection unit is connected to receiving transducers, while the output of the switching unit is connected to the output of a spectrum analyser.;EFFECT: high reliability of monitoring change in the physical-mechanical state of a rock mass owing to a higher signal-to-noise ratio of the information-measurement system.;3 dwg