Blasthole burden

Table 1. Blasthole pressures for different burdens (adapted from Mortazavi Katsabanis, 2001)...

The effect of variation of burden on the blasthole chamber pressure was studied by Mortazavi and Katsabanis (2001) by means of a dynamic blasthole expansion model, which was a numerical study. The data of blast hole chamber pressure recorded... 

The column of explosive in a blasthole should, if possible, extend continuously from the bottom of the hole up to the stemming. Only in this way can the cost of producing such large blasthole volumes be fully utilized by working with sufficiently large hole spacings and burdens. 

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