浅层地震反射法在城市活断层勘查中压制干扰方法探讨

利用浅层地震反射法可勘查城市活断层，但城市干扰源较多，特别是车辆、建筑施工等干扰非常严重，给地震勘探和资料处理带来很大困难。根据各种干扰源的动力学特征，为压制干扰波，采取合理选择施工时间，激发接收参数及排列方式等措施。在数据处理中，利用滤波剩余静校正等方法提高信噪比，并对时间剖面进行相关一差分分析识别断层。

A Discussion on Shallow Seismic Reflection Noise Elimination during Urban Active Fault Prospecting

When use the shallow seismic reflection method to prospect urban active faults, since there are a lot of interferential sources in the urban area, especially serious interference from vehicles and building operations, bring prodigious difficult to seismic prospecting and data processing. According to dynamic characteristics of various interferential sources, rationally choice operation time, shot and receiving parameters and spread geometry are essential to eliminate disturbing waves. In data processing, use methods of filtering residual shot static etc to improve signal-to-noise ratio, and correlation-differential analyses on time section to identify faults.