【摘要】 超声波技术被广泛应用于检测岩体性质。超声波纵波波速是反应岩体性质的重要参数。使用超声波测试仪测岩石的纵波波速时,换能器频率、换能器放置位置、耦合剂、岩石面理、含水状态等可能对波速的测值产生影响。本文在不同的测试条件下分别测试了岩石的纵波波速,分析了各个影响因素对测值的影响规律。结果表明,岩石纵波波速的测量结果受耦合剂种类、换能器频率、岩石面理、岩石含水状态的影响,不受换能器放置位置的影响。本文的研究结果可供岩石纵波波速测试的规范参考。更多还原

【Abstract】 Ultrasonic testing technique is widely used to detect rock properties. Ultrasonic compression wave velocity is the important parameter that indicates the properties of rock mass. When using an ultrasonic tester to measure the compression wave velocity of rocks, the transducer frequency, the transducer placement,the coupling agent,the veins and the hydrous state may affect the results of the wave velocity. In this paper,the compression wave velocities of rocks are tested and analyzed under the different testing conditions and the various influence factors on the measured values. The results show that the measurement results of rock compression wave velocities are affected by the type of coupling agent,transducer frequency,rock veins and hydrous state,but are not affected by the placement of the transducer.The results could be used as a reference for the specification of rock compression wave velocity test.更多还原