地震面波与折射波法在场地结构划分及岩土力学参数估算中的实验研究

The Experimental Research of Seismic Surface Wave Method and Refracted Wave Method in Field Structure Division and Soil Mechanics Parameters Estimation

摘要: 利用浅层地震仪对同一场地开展实验，从地震波数据中可以分别提取折射波和面波信号，利用折射波初至拾取方法可以得到基岩起伏界面和纵波速度，利用f-k域频谱分析提取面波频散曲线可以换算出不同深度的横波速度。联合两种方法对整个场地进行速度分层，确定覆盖层、风化层的厚度以及基岩起伏界面，并通过数学公式推导和借鉴前人经验，可以估算场地有关弹性力学参数，从而为工程施工提供一种快速、经济、有效的无损检测方案。

Abstract: Using shallow seismograph on the same site can extract the refracted wave and surface wave signals from the data of seismic wave. Using the first-break picking of refracted wave method can get the ups and downs of bedrock interface and the longitudinal velocity. Using the f-k domain frequency spectrum analysis to extract the surface wave dispersion curve can convert the S-wave velocity in different depths. Using the combination of the two methods to calculate the speed hierarchy of the entire site can determine the bedrock layer interface and the thickness of overburden layer and mantle rock. And using a mathematical formula derivation and drawing on previous experience can estimate the elastic mechanical parameters thus it can provide engineering construction a fast, economic, effective detection scheme.