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根据笔者的饱和流体孔隙介质中波的传播理论,具体研究了地震波在含水地层中的耗散和弥散效应。数值结果表明,影响地震波在含水地层中传播的重要因素,除频率外,是固相骨架和水的弹性波阻抗的比值和介质的渗透性、孔隙率;而固相颗粒与固相骨架的可压缩性的差别因素则影响较小。估计了含气量对波传播速度的影响。指出了迄今在地球物理学中的震相分析,工程地震学中的测震结果的分析和解释,以及在地力学中处理动力问题时把含水地层按单相材料考虑都可能存在很显著的误差,需要考虑到孔隙流体(水,气)的存在和根据具体情况做些相应的修正。
According to the author’s theory of wave propagation in saturated fluid porous media, the dissipation and dispersion effects of seismic waves in aquifer are studied in detail. The numerical results show that the important factors that affect the propagation of seismic waves in aquifers are the ratio of the elastic wave impedance of the solid phase skeleton and water and the permeability and porosity of the medium, except for the frequency; however, the difference between the solid phase particles and the solid phase skeleton The difference in compressibility is less affected. The influence of gas content on the wave propagation velocity is estimated. It is pointed out that so far there may be significant errors in seismic phase analysis in geophysics, analysis and interpretation of seismogenic results in engineering seismology, and consideration of hydrous formations by single-phase materials in handling geodynamic problems , Need to consider the existence of pore fluid (water, gas) and make the appropriate amendments according to the specific circumstances.