面波勘探和台阵地脉动观测相结合的地基调查法及其在松江古照壁保护中的应用

通过对高密度面波勘探和台阵地脉动勘探的频散分析算法的理论分析，推导出了2种勘探数据频散分析目标函数的统一表达式.根据该结果，用加权函数将2个目标函数结合起来，联合分析2种数据得到一条由高频到低频的完整的频散曲线；反演该频散曲线就可得到由地表到大深度的地下构造.将该方法应用于松江古照壁文物保护之地基勘查，为建立地震响应分析模型提供了由地表到40 m深处的横波速度构造.该方法是一种简便快速并兼顾浅层精度和勘探深度的工程地质调查方法.

Application of Geo-Investigation to Songjiang Ancient Wall Based on Surface Wave Survey and Array Microtremor Observation

This paper discussed the algorithms of dispersion analysis for both high density surface wave survey and array microtremor observation and derived a unified expression of objective function for dispersion analysis. This unified expression made it possible us to joint analyze the two kinds of exploration data to obtain dispersion data from high frequency to low frequency, and estimate the shear wave velocity structure from the surface to depth by dispersion inversion. This method was applied to the geo-investigation of Songjiang Ancient Wall. The survey result provides a subsurface structure model to 40 m deep for earthquake response analysis, and proves that this method is simple and rapid, with good resolution and deep survey depth.