1引言在工程岩体质量探测的过程中，需要一种大功率、高频响、短余振的震源。由此，我们研制了大功率声波发射机。近年来新型超磁致伸缩换能器问世，我们将其作为发射机的输出装置与发射机配套使用，使发射机具有更优良的性能。此发射机不仅能用于工程岩体的探测，还可对工程CT 1 Introduction In the process of rock mass quality inspection, a high-power, high-frequency response and short-residual vibration source are needed. As a result, we developed a high-power acoustic transmitter. In recent years, a new type of giant magnetostrictive transducer is available, and we use it as a transmitter output device and transmitter supporting the use, so that the transmitter has more excellent performance. This transmitter can not only be used for engineering rock mass detection, but also for engineering CT