Abstract：The shear wave velocity of loess，in some loess site near Linxia city of Gansu province，was tested through the single-hole method and transient Rayleigh wave method respectively. Together with the laboratorial results of basic properties of loess，the development laws between shear wave velocity and test method，initial void ratio，saturation，natural density and depth were analyzed for high-saturated loess. Based on the fuzzy-gray relation theory，the contribution rates of each influencing factors to the shear wave velocity of loess were studied. It is shown that the value of shear wave velocity is tested less by the single-hole method than the transient Rayleigh wave method；that the value of shear wave velocity is decreasing with the increase of initial void ratio and saturation，but the increasing rate of shear wave velocity become larger. Along with the increase of natural density and depth，the increasing trend of value of shear wave velocity become gentle，but the increasing rate of shear wave velocity has a decreasing trend. It is concluded by relation analysis that the soil saturation has the greatest impact on the shear wave velocity，while depth is the second important factor；and that the influences of soil natural density and void ratio to shear wave velocity are equivalent.
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2014, Vol. 33 
