目的:本文通过对超声波在浑水中的衰减进行了试验研究,为超声波用于黄河实体模型试验地形测量打下基础。方法:以粉煤灰为模型沙,在不同含沙量条件下通过共振法、相位法、时差法进行了超声波在浑水中的声速试验,对超声波在浑水中的衰减也进行了试验研究。结果:实验结果表明,声波在浑水中的传播速度差异不大。结论:经过试验研究与理论分析,得到超声波在粉煤灰的浑水中传播,含沙量对声速的影响不大,超声波探测技术可以应用于黄河实体模型地形测量。Purposes: In this paper, the attenuation of ultrasonic wave in muddy water is studied, which lays a foundation for the topographic survey of Yellow River solid model test. Method: Using fly ash as model sand, the ultrasonic velocity test in muddy water was carried out by resonance method, phase method and time difference method under different sand content conditions, and the attenuation of ultrasonic wave in muddy water was also studied. Findings: The experimental results show that there is little difference in the propagation speed of sound waves in muddy water. Conclusions: Through experimental research and theoretical analysis, it is found that ultrasonic wave propagates in the muddy water of fly ash, sand content has little effect on sound velocity, and ultrasonic detection technology can be applied to solid model topographic survey of Yellow River.
