## 5 Conclusions  
The effects of the technical seismicity induced by blasting were measured and assessed by the velocity of the environmental particles (particle velocity (v)) according to the maximum value of one of its three components, x, y and z. The seismic protection principle of the seismic safety of the building objects against technical seismicity can be expressed by the following relationship. \[\mathrm{v}\leq\mathrm{v_{d}} \tag{3}\]  
where v is the maximum value of the particle velocity component caused by the vibration source, measured at the so-called vibration rate. For the reference position of the protected (assessed) object, the reference opinion is the ground floor of the building; the value of v depends mainly on the maximum mass of the explosive charge fired at one time point Qeq1 [kg], further from the minimum source distance from the shock vibration receptor L [m] and the properties of the geological transfer environment between the source and the shock receptor. At the specific site, the value of v cannot be calculated in advance either analytically or empirically; the most reliable method is to determine it by a specific measurement, as in our case, i.e., vd is the maximum allowable (limiting) particle velocity for the object (s) under consideration; there is no damage to the object at this vibration velocity--the degree of damage is 0; this value is determined independently of the blast (before blast) based on practical experience, different standards or on the basis of expert assessments by specialists. STN 73 0036: 1973-11/STN EN 1998-1: 2005/NA show the \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline \multirow{2}{*}{\begin{tabular}{c} **Date of** \\ **Blast** \\ **Blast** \\ **Blast** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Blast** \\ **Explosives/Charge** \\ **Weight per Delay [kg]** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Theiling of** \\ **Blast Delay** \\ **[ms]** \\ \end{tabular} } & \multicolumn{3}{c}{**Peak Particle**} & \multirow{2}{*}{\begin{tabular}{c} **Frequency** \\ **[Hz]** \\ \end{tabular} } & \multirow{2}{*}{\
\begin{tabular}{c} **Number of** \\ **Bench** \\ **Blast** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **Distance Blast-** \\ **Building [m]** \\ \end{tabular} } \\
**Blast** & & & & & & & & & & & \\ \cline{1-1} \cline{6-10}
09.01. 2020 & 700 & 3667.5/187.5 & 25 & 1.58 & 2.21 & 1.09 & 38 & 16.9 & 24.1 & 2 & 644 \\
31.01. 2020 & 701 & 4000/155 & 17 & 0.66 & 0.72 & 0.37 & 7.8 & 5.28 & 12.9 & 1 & 743 \\
16.04. 2020 & 705 & 1725/195 & 25 & 1.53 & 1.08 & 0.70 & 12 & 8.6 & 32 & 2 & 636 \\
24.04. 2020 & 706 & 2000/188 & 17 & 0.43 & 0.30 & 0.20 & 5.8 & 5.85 & 11.7 & 2 & 631 \\
11.06. 2020 & 709 & 1175/125 & 25 & 0.57 & 0.78 & 1.04 & 6.6 & 6.04 & 15.8 & 4 & 540 \\
25.06. 2020 & 710 & 2675/165 & 25 & 1.08 & 1.65 & 1.07 & 6.3 & 13.5 & 23.2 & 2 & 642 \\
10.07. 2020 & 711 & 1945/155 & 17 & 0.48 & 0.65 & 0.37 & 5.8 & 5.8 & 14.6 & 1 & 743 \\
24.07. 2020 & 712 & 1560/130 & 25 & 1.33 & 1.23 & 1.01 & 18 & 5.8 & 24.3 & 3 & 570 \\
30.07. 2020 & 713 & 660/165 & 25 & 1.3 & 1.66 & 0.55 & 16 & 5.8 & 22.2 & 2 & 648 \\
17.08. 2020 & 716 & 2514/165 & 17 & 1.19 & 0.93 & 0.52 & 10 & 8.4 & 27.4 & 1 & 744 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Measured values of maximum particle velocities at individual delays of millisecond timing during daily aperture blasting in Trebejov Quarry (1998). Figure 12: Graphical course of the weight of explosives according to the performed blasting work (source: author). relationship between the vibration intensity expressed by the particle velocity of the individual components and the possibility of damage to the building. In accordance with the standard, the following criteria may be adopted for masonry civil buildings in an average building condition. At peak particle velocity:  
v = 0-10 mm.s\({}^{-1}\)--there is no damage to the building;  
v = 10-30 mm.s\({}^{-1}\)--possibility of the first signs of damage;  
v = 30-60 mm/s\({}^{-1}\)--possibility of a minor damage.