| 摘要 |
<p>A rock acoustic wave detection transducer comprising a transmitting transducer (1), a receiving transducer (2), a rigid connecting pipe (3), testing rods (4), a hydraulic pump (8), and an acoustic wave collecting apparatus (9). The transmitting transducer (1) is connected to the receiving transducer (2) via the rigid connecting pipe (3). One testing rod (4) is connected to the top of the transmitting transducer (1). The transducer is advantageous in that: by means of direct contact between a telescopic hydraulic contact (12) and a hole-wall rock of a detection hole, obviated is the need to introduce a coupling agent, thus dry-hole detection for acoustic wave testing is implemented; unaffected by water supply for construction and the orientation and angle of drilling, adaptability to various detection conditions on site is allowed; coupling pressure is controlled by a hydraulic apparatus having a pressure gauge, and consistency of coupling conditions can be ensured. Because impacts of a coupling agent are excluded and consistency of the coupling conditions is ensured, use of the apparatus in an acoustic wave test not only allows for increased accuracy in interpreting a waveform jump-off point for acquisition of acoustic velocity data, but also allows for acquisition of data in terms of acoustic amplitude and spectrum.</p> |
