Abstract：To provide a statistical formula between the shear wave velocity and depth of typical cohesive soil, silt, sandy soil, and gravel soil in Xiangyang area, Hubei Province, based on 102 measured borehole wave velocity data, we use multiple univariate regression models to fit and analyze the relationship between shear wave velocity and depth of common soil layers. Then, we discuss the influence of soil state on the correlation between the two. Finally, we verify the rationality and reliability of the statistical formula using actual drilling data. The results show that: 1) Except for artificial filling, there is a strong correlation between the shear wave velocity and depth of other conventional soil types in Xiangyang area, and the degree of dispersion increases with the increase of depth; 2) As the density or plasticity of the same soil type increases, its average shear wave velocity also increases; 3) Considering the soil state can make the prediction results of the regression model more specific and closer to the true values, but there is uncertainty in the changes in the goodness of fit of the model; 4) Regionality has a significant impact on the statistical relationship between soil shear wave velocity and depth. The shear wave velocity regression models provided in this article for various soil types in the Xiangyang area have better prediction accuracy and error stationarity compared to the national soil type models. They can provide valuable reference basis for seismic disaster risk survey, site soil dynamic properties research, and determination of seismic motion parameters in the Nanxiang basin and surrounding areas.
YU Song,WU Jianchao,CAI Yongjian et al. Study on the Correlation between Shear Wave Velocity and Depth of Soil in Xiangyang Area, Hubei Province[J]. jgg, 2024, 44(6): 618-623.
