三层对称模型瑞雷型槽波与洛夫型槽波频散特征研究

Study on Three-Layer Symmetrical Model Rayleigh Channel Wave and Love Channel Wave Frequency Dispersion Features

槽波频散特征分析对槽波地震成像至关重要,是槽波地震数据处理的重要环节之一。瑞雷型槽波应用较少,槽波应用仍以洛夫型槽波为主。基于槽波理论,对三层对称模型的洛夫型槽波与瑞雷型槽波的频散特征进行了研究。通过对比发现两种频散特征随煤层及围岩参数变化的趋势具有相似性,但其影响程度存在较大差异,其中瑞雷型槽波频散特变化相对复杂一些。这个特征可用于多分量矿井槽波地震反演纵波速度成像,并有望达到对地质异常体更加精细的刻画。

The analysis of channel wave frequency dispersion features is crucial to channel wave seismic imaging, one of important links in channel wave seismic data processing. In channel wave applications, the Love channel wave is still dominated, lesser Rayleigh channel wave. Based on channel wave theory, has carried out studies on three-layer symmetrical model Love channel wave and Rayleigh channel wave frequency dispersion features. Through comparison have found that the variation trend of the two kinds of dispersion features have similarity, but larger difference in impact extent, in which, the variation of Rayleigh channel wave is relatively complex.The features can be used in multi-component mine channel wave seismic conversion compression wave velocity imaging, and expected to achieve more elaborate geological anomalous body depiction.