UDEC modeling of a field explosion test

A field explosion test is conducted to investigate the blast wave characteristics and propagation in jointed rock mass. A hybrid AUTODYN and UDEC scheme is used to predict the rock mass response due to the explosion. The original prediction is then modified by involving the actual test conditions and dynamic equation of state of the rock material. Correlating the prediction results with the field explosion test results shows that the hybrid AUTODYN and UDEC scheme is capable of modeling explosion problems with high reliability. It is observed that the modified prediction result agrees better with the field test result than the original prediction result, which implies that involving dynamic parameters in the modeling is very important to produce reliable prediction results.