Application of Vertical Acoustic Reflection Method in Cutoff Wall Quality Inspection

This paper used vertical acoustic reflection method to detect the quality of Liaofang Reservoir's dike cutoff wall,and processed original data in instantaneous spectral method.Tthrough verification by drilling,the result showed good effect.Some successful examples showed that combined use of vertical acoustic reflection method and instantaneous spectral method is a good way for quality defect inspection of cutoff wall.