Some Detonation Characteristics of ANFO Explosives

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  • アンホ爆薬の爆轟特性について
  • アンホ バクヤク ノ バクゴウ トクセイ ニ ツイテ

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Recently, ANFO explesive has come into use in metal mines and quarries for reasons of its economical profit and safety.<BR>It has been found out that ANFO explosive has scarcely shown the differences in blasting effects in comparison with conventional explosives, for example Kiri dynamites and carlits.<BR>The detonation'; characteristics of ANFO explosives that need to carry out the designs for blasting has been studied by several workers, but it has not been clari fied sufficiently.<BR>The authors measured the detonation velocity of ANFO explesives with ion gap method and obtained the results as follows.<BR>1) Under fixed detonating conditions, the final detonation velocities of ANFO explosive are hardly dependent on the kinds and quantities of primers used.<BR>2) The quantities of primers, in other words, the differences in priming energies exert an influences upon the time up to the fixed detonation velocities.<BR>3) Under the same detonation conditions, the optimum quantity of primer can be calculated from the blasting models used.

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