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地震波在地下传播过程中,随穿过的物质成分或地层属性的不同,频谱特征将会发生改变,当岩层中存在破碎带、小断层等小幅构造时,这种突变现象将会更加明显.在传统频谱分析技术的基础上,本文拓展出连续频谱分析方法,并采用分层开时窗的手段对地震波进行连续频谱分析,从而提取目的层的隐蔽地质属性特征,进而圈定破碎带规模、识别小幅构造、寻找地层隐蔽圈闭,为精细地质解释提供更多可靠的地震响应信息.通过模型和实际资料处理,取得了较好的处理效果.
When the seismic wave propagates underground, the spectral characteristics will change along with the material composition or stratigraphic properties of the material passing through it. This phenomenon of mutation will be more obvious when there are small structures such as broken zones and small faults in the rock mass. Based on the traditional spectrum analysis techniques, this paper expands the method of continuous spectrum analysis, and uses the method of stratified opening of time windows to carry out continuous spectrum analysis of the seismic waves, so as to extract the hidden geological features of the target layer and further delineate the size of the fractured zone and identify the small Structure and find the hidden trap of strata, which can provide more reliable seismic response information for the fine geological interpretation.Through the model and the actual data processing, a better treatment effect has been achieved.