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汾河水库泄洪隧洞岩塞渠底孔用声波测试方法，准确划分出岩塞部位风化界线，校核了原地质剖面图风化界线。声波测试，采用单孔与跨孔两种方法进行。跨孔测试随孔间距增大，纵波波速减小，它反映大范围岩体特性；单孔测试反映沿孔轴小范围的岩体特性。两种方法在纵波波速曲线上，岩体风化程度起伏形态一致，在以纵波波速范围划分岩体风化程度时，单孔所测数据较接近实际。通过声波测试，原地质剖面对风化界线的划分与声波测试绝对误差小于±４ｍ。
Fenhe Reservoir Spillway Tunnel plug hole bottom acoustic test method, accurately demarcated the weathering line of rock plug site, check the original geological section weathered boundary line. Sonic testing, using single-hole and cross-hole two methods. Cross-hole test with the hole spacing increases, the longitudinal wave velocity decreases, which reflects the characteristics of a wide range of rock mass; single hole test reflects the rock along a small range of hole axis characteristics. In the two methods, the weathering degree of rock mass is consistent on the longitudinal wave velocity curve. When the rock mass degree of weathering is divided by the longitudinal wave velocity range, the measured data of single hole is closer to reality. Through sound wave testing, the absolute error of the division and weathering test of the original geological section to the weathering boundary is less than ± 4m.