Shock wave propagation

This paper introduces a technique of numerical analyzing shock wave data obtained from delay-time blasting to determine wave propagation velocity. This is one of the parameters that indirectly describe the rock physical -mechanical property. The results of experimental application in Nui Beo coal mine area have confirmed the feasibility of the solution.

7p vishivnadar 17-01-2022 14 0   Download

In the paper, the investigation results of shock waves, propagated in the liquid and two-component gas (one component is neutral, the other is condensed) mixture, are presented. The influence of the relative gas ratios, initial gas volume, wave intensity etc. on the main wave characteristics, is analyzed and illustrated as examples for two mixtures. The first is a mixture of water and gas (air and water vapour).

10p chikychiky 26-10-2018 20 1   Download

In the paper the results of investigation of waves reflected by solid wall of the stationary shock waves with moderate intensities or the transient pulses propagated in the mixture of liquid with vapour bubbles are presented. The effect of initial conditions, shock strength, size of the bubbles and volume fraction of vapour phase on the behaviour of the waves reflected by solid wall is studied.

14p chikychiky 26-10-2018 30 1   Download