1943 Figure 11; Simulation schema profile made with Numerical Modeling. Table 11; Orica Benchmarking: Technical criteria. Range Rating < 20% Very bad 20% 30% Bad boy 30% 40% Regular 40% 55% Well 55% 65% Very good 65% < Excellent 5. ANALYSIS OF RESULTS FOR BASE CASE 1.5 m. Spacing. For the 1.5 m spacing baseline case, an analysis of the numerical simulation results for the different explosive diameters reveals the following: • 1 1/2-inch Explosive Diameter: This configuration develops optimal connectivity between blastholes, resulting in the successful generation of a presplit plane (see Figure 2). • Data Correlation: A double-entry table was generated to analyze the relationship between Peak Particle Velocity (PPV) in mm/s and the distance in meters. • Attenuation Efficiency: The theoretical attenuation (filter %) yielded by the model is 38% for the 1 1/2" diameter and 34% for the 1 1/4" diameter (see Figure 5). Figure 12; Results obtained under intact rock conditions for packaged explosive diameters of 1 1/2" and 1 1/4", with a 1.5 m spacing and a 0.5 x 0.5 m grid..
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