Shear wave velocity (Vs) is an important parameter characterizing the engineering properties of soils. Vs is directly related to the dynamic shear modulus and is used to estimate the stress-strain behaviour of soils in the elastic range. Shear wave velocity measurements can be used for the evaluation of liquefaction potential, ground improvement monitoring and identification of weak zones of a site.

​

The in situ shear wave velocity is measured using various seismic techniques including refraction, analysis of surface waves, crosshole and downhole testing. Surface methods are preferred for investigations of large areas, whereas borehole methods are applied mostly for detailed site-specific studies.

 

Methods:

• Multichannel analysis of surface waves (MASW)

• Downhole seismic

• Seismic refraction

​

​

​