## 4 Results
Using data from the diagram presented in Figure 10, the surface formed in relation to the designed burden and the deviation values of the burden for each measurement can be taken into account. The difference between these surfaces \(\Delta\mathrm{P}\) can be calculated using the following equation:  
\[\Delta\mathrm{P=}\frac{\Delta\mathrm{P_{des}}}{\Delta\mathrm{P_{dev}}} \tag{2}\]  
where  
\(\Delta\mathrm{P_{des}}\) is the surface with designed burden size (mm\({}^{2}\));  
\(\Delta\mathrm{P_{dev}}\) is the surface with burden deviation from the designed one (mm\({}^{2}\)). The surface of the blasted material for the case when the burden does not have deviations and it is equal to the designed one \(\Delta\mathrm{P_{des}}\), can be calculated as the sum of the surface of the blasted material of each blasthole, as given in Equation (3). In the same way, the surface of the blasted material for the case when there is a deviation of the burden and when its value is greater than the designed one \(\Delta\mathrm{P_{dev}}\), can be obtained, as shown in Equation (4). \[\Delta\mathrm{P_{des}}=\Delta\mathrm{P_{des_{1}}+}\Delta\mathrm{P_{des_{2}}+}.....+\Delta\mathrm{P_{des_{8}}}=19,\text{233 mm}^{2} \tag{3}\]  
and  
\[\Delta\mathrm{P_{dev}}=\Delta\mathrm{P_{dev_{1}}+}\Delta\mathrm{P_{dev_{2}}+}.....+\Delta\mathrm{P_{dev_{8}}}=20,\text{494 mm}^{2} \tag{4}\]  
By inserting the obtained values into Equation (2), the value of \(\Delta\mathrm{P}\) can be calculated as follows:  
\[\Delta\mathrm{P=}\frac{\Delta\mathrm{P_{des}}}{\Delta\mathrm{P_{dev}}}=0.94\]  
Using a similar procedure, the values of the peak particle velocity (PPV) for each repetition for the values of B = 30 mm and B > 30 mm can be calculated. The value of variable \(\Delta\mathrm{V_{max}}\) represents the difference in the peak particle velocity (PPV) of the designed burden and the burden with deviations for the burden values of B = 30 mm and B > 30 mm, respectively. \[\mathrm{V_{max}}=\frac{\Delta\mathrm{V_{des_{max}}}}{\Delta\mathrm{V_{dev_{ max}}}} \tag{5}\]  
where  
\(\Delta\mathrm{V_{des_{max}}}\) represents the peak particle velocity (PPV) measured for B = 30 mm (mm/s);  
\(\Delta\mathrm{V_{dev_{max}}}\) represents the peak particle velocity (PPV) measured for B > 30 mm (mm/s). The values of \(\Delta\mathrm{V_{des_{max}}}\) and \(\Delta\mathrm{V_{dev_{max}}}\) can be calculated in the same way as shown in Equations (3) and (4). The calculation for both values is represented through the following equations for each testing case. \[\Delta\mathrm{V_{des_{max}}}=\Delta\mathrm{V_{des_{max}}}+\Delta\mathrm{V_{ des_{max}}+}.....+\Delta\mathrm{V_{des_{max}}}=574.9\;\mathrm{mm/s} \tag{6}\]\[\Delta\mathrm{V_{dev_{max}}}\mathrm{=}\Delta\mathrm{V_{dev_{max}}}\mathrm{+} \Delta\mathrm{V_{dev_{max}}}\mathrm{+}.....+\Delta\mathrm{V_{dev_{max}}}\mathrm{ =}832.2\mathrm{\ mm/s} \tag{7}\]  
The obtained values for \(\Delta\mathrm{V_{des_{max}}}\) and \(\Delta\mathrm{V_{dev_{max}}}\) are inserted in Equation (5), and the value of \(\Delta\mathrm{V_{max}}\) is calculated as follows. Figure 13:0  
Additionally, the coefficient from Equation (1) for each of the measured values can be calculated and shown on the diagram to represent the dependence of peak particle velocity (PPV) on the values of the burden deviations. Figure 13:1