双相介质中地震波能量提取方法研究

Discussion on the method of double-phase medium seismic wave energy extraction

双相介质理论丰富和发展了传统的单相纯固体介质的地震波传播理论,由于慢纵波的存在,不仅使地震波的传播规律发生了变化,而且使地震波的能量分配也发生了变化.采用数字三角递归滤波器来快速、精确地提取特定频率下的地震波场信息,其中富含瓦斯信息.应用某矿三维地震资料提取瓦斯信息,与其已知瓦斯数据分布规律基本一致,说明基于双相介质理论的三维地震资料在预测瓦斯方面具有广泛的应用前景.

Double-phase medium theory has enriched and developed the pure single-phase solid medium of seismic wave propagation theory.The existence of slow longitudinal wave not only makes the seismic wave propagation change in the law,but also the seismic wave energy distribution change.In this paper,the triangle recursive filter is used to quickly and accurately extract specific frequency of seismic wave field information,in which contains the gas information richly.Extraction of gas information from the three-dimensional earthguake data in a mine proves that the double-phase medium theory in predicting gas has a wide range of application.