工程物探中地震层析成像的研究

STUDY OF SEISMIC TOMOGRAPHY IN ENGINEERING GEOPHYSICS PROSPECTING

从实际情况出发，讨论工程中应用地震层析成像方法几个环节中的一些具体问题，包括资料采集中观测系统的装置，原始资料的分析和预处理，以及资料处理时如何选择合适的参数等。文中提出的扫描法、快速搜索法等弯曲射线校正方法克服了以往方法计算量大、存在盲区等缺点。反演实测资料效果良好。

This paper introduces briefly the method and principle of seismic tomography proceeding from actual conditions of hydroelectric engineering.Some practical problems on using seismic tomography, including the design of survey system, analysis and preprocessing of firsthand data and choice of parameters in data processing,are discussed.The scan method put forward in this paper overcomes such shortcomings as existing blind zone, much computing-time consuming in old method of bending-ray.Inverse result has good geological effect.