科研之友
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摘要
Experiments are performed by Metravib dynamic mechanical analyzer about the attenuation and dispersion of pump-oil and glycerol saturated Peng-shan sandstones with two kinds of porosities. The frequency and temperature of tests are natural earthquake. The results show: (1) The attenuation peak of pump-oil saturated Pengshan sandstone appears to be thermo-activated relaxation. (2) Young's modulus and elastic wave velocity of saturated Pengshan sandstones reduce with porosity and temperature increasing, and rise with viscosity coefficient of saturated liquid and frequency increasing. (3) Frequency dispersion attenuates as temperature increases, enhances as frequency rises. The data provides the experiment foundation for theoretical research of seismic waves.
