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What is the pot blasting?
The blasting of the medicine pot is also called the hoist gun or the jar gun. It is a blasting method in which the bottom of the blasthole is expanded into a cavity with a small amount of explosive at the bottom of the blasthole, which can be used for more medicines or extended drug packs to concentrate the medicine package to enhance the throwing effect and overcome the resistance of the step floor. As shown in Figure 1.
Figure 1 Schematic diagram of the blasting of the pot
(É‘) single pot pot arrangement; (b) upper and lower pot pot arrangement
Compared with the general shallow hole blasting method, the blasting method has a small amount of drilling work, and the amount of charge per hole is large, and the amount of blasted ore is large. However, due to the need to carry out multiple expansion of the pot, the process is backward and the safety is poor. Therefore, it is not used in regular mines and is generally used in small quarries where drilling is difficult. Can not be used in joints and rock formations with soft rock formations.