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基于Kelvin横向各向同性(KEL-VTI)介质的复物性参数矩阵,在弱各向异性和弱衰减的假设下,提出KEL-VTI介质各向异性复相速度和品质因子的近似解;结合KEL-VTI介质模型,讨论了qP、qSV、qSH波的相位与能量的传播特点;进一步针对淮南煤矿的地质情况建立了典型的KEL-VTI介质模型,数值模拟结果显示PP、PSV波的理论波场与该地区实际采集的三分量地震的纵波和转换波波场吻合程度较好,说明KEL-VTI介质假设是对这种典型煤田地震地质条件的较好近似,有助于多分量地震数据的吸收衰减补偿研究。
Based on the complex parameter matrix of Kelvin transversely isotropic (KEL-VTI) media, an approximate solution to the anisotropic complex phase velocity and quality factor of KEL-VTI media is proposed under the assumption of weak anisotropy and weak attenuation. Combined with KEL -VTI media model, the phase and energy propagation characteristics of qP, qSV and qSH waves are discussed. A typical KEL-VTI media model is established for the geological conditions of Huainan coal mine. The numerical simulation results show that the theoretical wave fields of PP and PSV waves The results show that the KEL-VTI medium hypothesis is a good approximation to the seismic geological conditions of this typical coal field, which is helpful for the absorption of multi-component seismic data Attenuation Compensation Study.