1. What is the Konya Formula?

The Konya Formula is used in blasting engineering to calculate the specific gravity of rock based on explosive properties and blast design parameters. It helps determine the appropriate burden distance for optimal rock fragmentation.

2. How Does the Calculator Work?

The calculator uses the Konya Formula:

Where:

• \( Specific\ Gravity\ of\ Explosive \) — Ratio of explosive density to reference substance density
• \( Diameter\ of\ Explosive \) — Diameter of the explosive charge (meters)
• \( Burden \) — Distance from blast hole to nearest free face (meters)
• 3.15 — Empirical constant in the Konya formula

Explanation: The formula establishes a relationship between explosive properties, charge diameter, burden distance, and the resulting rock specific gravity for optimal blasting results.

3. Importance of Specific Gravity Calculation

Details: Accurate calculation of rock specific gravity is crucial for proper blast design, optimizing fragmentation, controlling flyrock, and ensuring efficient explosive energy utilization in mining and construction operations.

4. Using the Calculator

Tips: Enter specific gravity of explosive (unitless), diameter of explosive in meters, and burden distance in meters. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for specific gravity of explosives?
A: Most commercial explosives have specific gravity values between 0.8 and 1.6, depending on the explosive type and composition.

Q2: How does burden affect rock fragmentation?
A: Proper burden distance ensures optimal energy transfer from the explosive to the rock, affecting fragmentation size, throw distance, and overall blasting efficiency.

Q3: When should the Konya formula be used?
A: The Konya formula is particularly useful for initial blast design calculations and when specific rock properties need to be determined based on known explosive parameters.

Q4: Are there limitations to this formula?
A: The formula provides approximate values and should be used as a starting point for blast design. Field conditions, rock structure, and other factors may require adjustments.

Q5: What units should be used for input values?
A: Diameter of explosive and burden should be in meters. Specific gravity values are dimensionless ratios and do not require units.