Evaluation of Applicability of HWAW (Harmonic Wavelet Analysis of Waves) Method in Determining Grouting Effect in Dam and Embankment

제체 그라우팅 효과 평가를 위한 HWAW방법의 적용성 평가

Noh, Hee-Kwan;Park, Hyung-Choon

  • Received : 2016.03.02
  • Accepted : 2016.05.01
  • Published : 2016.05.31


Dam and embankment are very important civil structures. Grouting is widely used to repair and maintain dam and embankment, and it is important to evaluate the effect of grouting for dam safety. The non-destructive method based on determination of wave velocity in the dam or embankment is effectively used to evaluate grouting effect because wave velocity is identical with stiffness and grouting increases local stiffness in a dam. In this paper, HWAW (Harmonic wavelet analysis of waves) method was applied to evaluate the grouting effect. HWAW method can determine two-dimensional shear wave velocity map with good spatial resolution and the shear velocity profile by the proposed method is sensitive to a variation of stiffness of target system. Through numerical simulation and field tests, the applicability of HWAW method in determining grouting effect is shown.


Dam;Grouting;HWAW method;Shear wave velocity


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