Comparison of three methods for geotechnical centrifuge model tests of explosion cratering in sand

The explosion cratering effects in dry standard sands were investigated by using a 450 g-t geotechnical centrifuge apparatus. The ten centrifuge model tests were completed with a variety range of explosive mass, burial depth and centrifuge accelerations. Three methods were used to analyze the results of 10 centrifuge model tests of explosion cratering in sand. These three methods included Schmidt formula, Baker formula, and the correction Boryeskov formula. The first two formulas were derived by similarity analysis. The correctional Boryeskov formula was an empirical formula based on experimental data. The correlation coefficients R2 of the three methods were 0.931, 0.960, and 0.998 respectively. A comparison of these three methods was also given in this paper. The Schmidt formula is the most suitable method for cratering effect analysis. The parameters of this formula can be accurately determined.