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折射波法勘探可应用于存在波阻抗差异,且基岩的速度大于覆盖层的地层。折射波法的折射波初至易于识别,可得到岩性及完整岩体的界面速度,在评价掩体质量和分类等工程地质问题上有广泛的应用。该文论述了折射波的原理,并通过浅层折射波差数时距曲线求得界面的速度,来得到坝址的覆盖层厚度。
Refraction wave exploration can be applied to the presence of wave impedance differences, and bedrock velocity greater than the cover of the formation. The refraction wave of refraction wave method can be easily identified from the beginning, and lithology and interfacial velocity of complete rock mass can be obtained. It is widely used in engineering geology problems such as evaluating the quality and classification of bunker. In this paper, the principle of refracted wave is discussed, and the velocity of the interface is obtained from the curve of the wave number of the shallow refracted wave to obtain the thickness of the cover of the dam site.