What is the value of peak particle velocity from explosives?
Answers
Answer:
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Explanation:
A new relationship called the mass/peak particle velocity (PPV)-frequency relation in mining blast is introduced in this study. Two well-known formulae of mining engineering and geophysical engineering are joined to create a new formula which relates 'explosive charge' to 'PPV-frequency' at a target location. The meaning of the frequency computed from the newly proposed formula is thoroughly analysed and discussed for its validity and limits. This frequency is named as the 'PPV accompanying frequency' or simply 'PPV-frequency' as an alternative to the known 'dominant' and 'zero-cross frequencies'. The paper also points to the importance of the geophone properties like resonance frequency, damping factor and response curve, for safe dominant frequency determinations.