Proceeding from wave equations, the paper strictly deduced the dispersion relation equation of Love-type channel waves in Standard Linear Solid model. The equation is a complex one with its real part signifying the dispersion characteristics of the channel wave while the imaginary part, the attenuation characteristics. In calculating the attenuation value, the author has set up a mathematical model of a horizontal symmetric sequence (a three layer sequence of rock-coal-rock), given out some physical parameters, and adopted the dichotomy method that is more often used inroot resolving of an equation. The calculation indicates that the influence of nonelastic absorption on the attenuation of the propagation of channel wave varies with thefrequency. In the frequency band of the Airy phase, the attenuation increases steeplike, which is unfavorable for the channel wave seismic prospecting. The study ofchannel wave attenuation has provided a theoretical basis for the compensation of attenuation.
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