Love channel-waves dispersion characteristic analysis of typical coal models
Abstract：In order to study the dispersion characteristics of Love channel-waves under different geological conditions,four kinds models of 2D typical seismogeology were designed.There are various coal thickness models,different wall rock（high-velocity and low-velocity wall rock models）for which the coal thickness is stable as 10 m,coal models containing 5 m fault for which the coal thickness is 10 m,and coal imbedded by leat which sizes are 5 m×5 m,5 m×10 m,5 m×20 m and 5 m×50 m.These models were numerically simulated by SH wave equation.Analyzed the wave-fields characteristics of Love channel-waves and used Fourier transform on synthetic seismic records to obtain channel-waves dispersion curves;the results show that the coal thickness mainly influences energy distribution of different modes＇ dispersion curves.The minimum shear wave velocity between top and bottom wall rock controls upper limit of dispersion curves;leat bodies make dispersion curves diffuse.The fault has a low impact on channel-waves dispersion.
Keywords：coal seam modelLove channel-wavedispersion characteristichigh-order mode
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)