| 摘要 |
A loose rock detector comprises an impact tool (10) for hitting the rock face, sensors (20,22) for detecting acoustic, rock motion and/or impact force signals generated by movement of the impact tool against the face of the rock, a data processor (12) responsive to the sensors (20,22)for correlating the above signals in the time and/or frequency domain against predetermined relationships to detect loose rocks and to assess mass and degree of looseness of the rock, and a display unit (14) for displaying the results of the correlation. |
