【摘要】 针对复杂表层结构的反演问题,作者研究了一套利用地面地震初至波层析反演表层速度结构的理论、方法和软件系统。该方法利用了地面地震直达波、迥折波、折射波以及三者组合的初至波,并采用具有空间变速优势的层析反演,可获得任意介质类型的表层速度结构。该方法的优点是野外施工简单(不需要在井中激发、接收),反演精度高,适应性强,反演所得到的表层速度结构可直接用于环境与工程项目的表层地质结构调查和评价。更多还原

【Abstract】 Aimed at the inverse problem of the complicated surface structure, the authors studied the theory, method and software to inverse the surface velocity structure by using the ground seismic first break. The method make use of the first break which include ground seismic direct wave, diving wave, refraction wave and combination of the three, and the tomographic inversion method adapting to any condition of variable space velocity, so the surface velocity structure of the arbitrary medium type can be obtained. This method is of the advantage of simple field data acquisition (no need to explode and receive in the well), high inversion precision and good adaptability. The surface velocity structure by tomographie inversion can be used on the investigating and evaluating for the surface geologic structure in the projects of environment and engineering.更多还原