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Overpressure Formula:
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Overpressure for a charge exploded on the ground surface refers to the pressure wave generated by an explosive detonation that exceeds atmospheric pressure. This measurement is crucial for assessing potential damage and ensuring safety in mining and construction operations.
The calculator uses the overpressure formula:
Where:
Explanation: The equation calculates the overpressure generated by an explosive charge detonated on the ground surface, accounting for the explosive weight and distance from the blast.
Details: Accurate overpressure estimation is crucial for safety planning, structural damage assessment, and establishing safe blast exclusion zones in mining and construction operations.
Tips: Enter the maximum weight of explosives per delay in kilograms and the distance from explosion to exposure in meters. All values must be valid (weight > 0, distance > 0).
Q1: What is maximum weight of explosives per delay?
A: It's the maximum amount of explosive material detonated in a single blasting delay to ensure controlled and safe detonation sequences.
Q2: Why is distance from explosion important?
A: Distance significantly affects overpressure levels, with pressure decreasing as distance increases from the blast source.
Q3: What are typical overpressure values?
A: Overpressure values vary widely based on explosive weight and distance. Even small overpressures can cause damage to structures and pose safety risks.
Q4: Are there safety standards for overpressure?
A: Yes, various industry standards and regulations specify maximum allowable overpressure levels to protect structures and ensure personnel safety.
Q5: Can this formula be used for underground explosions?
A: This specific formula is designed for surface explosions. Underground blasts may require different calculations due to confinement effects.