Abstract: Through the ultrasonic test on the dry and water-saturated samples of deep sandstone of Hegang Nanshan Mine, the variation law of the elastic wave velocity of the sandstone at dry and water saturated states in relation to the temperature was deduced, which was then compared with the static elastic parameter in the uniaxial compression test. The results indicate that when the temperature rises from 20℃to 95℃, the elastic wave velocities of the two samples vary in different trends with greatly different variation scopes. The wave velocity of the dry sandstone is smaller than that of the water-saturated sample, and with the temperature increase, their wave velocity ratio curves become more complex in different variation trends. The dynamic and static elastic moduli of the dry sample are greater than those of the saturated sample, with the dynamic elastic moduli greater than the static ones. The variation of their dynamic and static Poisson's ratios is not regular.

Key words: Sandstone at depth, Elastic wave velocity, Dynamic and static parameters