山东地区基岩剪切波速与深度的关系

Relationship between Shear Wave Velocity and Depth of Bedrock in Shandong

以山东地区86个钻孔的剪切波速资料为基础,按照岩性分为4组:石灰岩组、花岗岩组、泥岩组和砂岩组。分别对各组数据的平均剪切波速与基岩深度进行拟合,得到了不同岩性剪切波速与基岩深度的拟合关系。拟合过程中,选用了不同的趋势线类型,以拟合优度为判定依据并结合岩石物理性质,确定了最优的拟合结果。从拟合结果来看,不同的岩性剪切波速与深度的关系式是不同的。

The shear wave velocity data of 86 boreholes in Shandong Province was Studied,which was divided into four groups： limestone group, granite group, mudstone group and sandstone group. The average shear wave velocity and bedrock depth of each group were fitted respectively. And the fitting relationship between different lithologic shear wave velocity and bedrock depth was obtained. During the fitting process, different trend line types were selected to determine the optimal fitting results ,basing on goodness of fitting and physical properties of the rock. From the fitting results, the relationship between the different lithologic shear wave velocity and the depth is different.