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The Length of Borehole refers to the longer dimension of the borehole used in blasting operations. It is a critical parameter in mining and construction that determines the depth of the hole drilled for explosive placement.
The calculator uses the formula:
Where:
Explanation: This formula calculates the optimal borehole length based on the square of blasting space divided by the burden distance, ensuring efficient explosive distribution for multiple simultaneous blasting operations.
Details: Accurate borehole length calculation is crucial for effective blasting operations. It ensures proper explosive distribution, maximizes rock fragmentation, minimizes vibration, and improves overall blasting efficiency while maintaining safety standards.
Tips: Enter blasting space and burden values in meters. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is blasting space?
A: Blasting space denotes the lateral distance on centers between holes in a row, measured in meters.
Q2: What is burden in blasting operations?
A: Burden is the distance from the blast hole to the nearest perpendicular freeface, which is a critical parameter for effective rock breaking.
Q3: Why is this formula important for multiple simultaneous blasting?
A: This formula ensures proper explosive distribution and optimal rock fragmentation when multiple holes are detonated simultaneously, improving blasting efficiency.
Q4: What factors can affect the accuracy of this calculation?
A: Rock type, explosive properties, geological conditions, and specific blasting requirements can influence the optimal borehole length calculation.
Q5: Are there safety considerations when using this formula?
A: Yes, proper borehole length calculation is essential for safety. Incorrect calculations can lead to flyrock, excessive vibration, or incomplete fragmentation, posing safety risks.