Burden Given Spacing For Multiple Simultaneous Blasting Calculator

Formula Used:

\[ Burden = \frac{(Blasting\ Space)^2}{Length\ of\ Borehole} \]

Burden:

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1. What is the Burden Calculation?

The burden calculation determines the optimal distance from the blast hole to the nearest perpendicular freeface in multiple simultaneous blasting operations. This is crucial for efficient rock fragmentation and safety in mining and construction blasting.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Burden = \frac{(Blasting\ Space)^2}{Length\ of\ Borehole} \]

Where:

\( Blasting\ Space \) — Lateral distance on centers between holes in a row (meters)
\( Length\ of\ Borehole \) — The longer dimension of the borehole (meters)

Explanation: This formula calculates the optimal burden distance based on the square of the blasting spacing divided by the borehole length, ensuring proper fragmentation and minimizing flyrock.

3. Importance of Burden Calculation

Details: Accurate burden calculation is essential for effective blast design, optimal rock breakage, reduced vibration, improved safety, and cost efficiency in blasting operations.

4. Using the Calculator

Tips: Enter blasting space in meters, length of borehole in meters. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is burden calculation important in blasting?
A: Proper burden ensures efficient rock fragmentation, controls flyrock, reduces vibration, and improves overall blast safety and effectiveness.

Q2: What factors affect burden calculation?
A: Rock type, explosive properties, hole diameter, and desired fragmentation size all influence the optimal burden distance.

Q3: How does blasting spacing affect burden?
A: Larger spacing increases the burden calculation, requiring greater distance to the freeface for optimal fragmentation.

Q4: What are typical burden values in mining?
A: Burden values typically range from 0.5 to 8 meters depending on the blast design, rock properties, and explosive characteristics.

Q5: Can this formula be used for all blasting scenarios?
A: While this formula provides a good estimate, specific geological conditions and explosive types may require adjustments for optimal results.