FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Burden Suggested in Langefors' Formula Formula

Fx Copy

LaTeX Copy

Burden in Langefors' Formula is the ratio of explosive weight to rock mass, determining efficient rock fragmentation in blasting operations. Check FAQs

B L = (\frac{d b}{33}) \cdot \sqrt{\frac{D p \cdot s}{c \cdot D f \cdot EV}}

B_L - Burden in Langefors' Formula?d_b - Diameter of Drill Bit?D_p - Degree of Packing?s - Weight Strength of Explosive?c - Rock Constant?D_f - Degree of Fraction?EV - Ratio of Spacing to Burden?

Burden Suggested in Langefors' Formula Example

With values

With units

Only example

Here is how the Burden Suggested in Langefors' Formula equation looks like with Values.

Here is how the Burden Suggested in Langefors' Formula equation looks like with Units.

Here is how the Burden Suggested in Langefors' Formula equation looks like.

0.01 = (\frac{97.5}{33}) \cdot \sqrt{\frac{3.01 \cdot 5}{1.3 \cdot 2.03 \cdot 0.5}}

0.01m = (\frac{97.5mm}{33}) \cdot \sqrt{\frac{3.01kg/dm³ \cdot 5}{1.3 \cdot 2.03 \cdot 0.5}}

0.01 = (\frac{97.5}{33}) \cdot \sqrt{\frac{3.01 \cdot 5}{1.3 \cdot 2.03 \cdot 0.5}}

Tip: Use pencil () icon above to edit Input Values and Units.

Solution

Copy

Share

You are here -

Home » Engineering » Civil » Geotechnical Engineering » Burden Suggested in Langefors' Formula

Burden Suggested in Langefors' Formula Solution

Follow our step by step solution on how to calculate Burden Suggested in Langefors' Formula?

FIRST Step Consider the formula

B L = (\frac{d b}{33}) \cdot \sqrt{\frac{D p \cdot s}{c \cdot D f \cdot EV}}

Next Step Substitute values of Variables

∴

B L = (\frac{97.5mm}{33}) \cdot \sqrt{\frac{3.01kg/dm³ \cdot 5}{1.3 \cdot 2.03 \cdot 0.5}}

Next Step Convert Units

∴

B L = (\frac{0.0975m}{33}) \cdot \sqrt{\frac{3.01kg/dm³ \cdot 5}{1.3 \cdot 2.03 \cdot 0.5}}

Next Step Prepare to Evaluate

∴

B L = (\frac{0.0975}{33}) \cdot \sqrt{\frac{3.01 \cdot 5}{1.3 \cdot 2.03 \cdot 0.5}}

Next Step Evaluate

∴

B L = 0.00997824650170504m

LAST Step Rounding Answer

∴

B L = 0.01m

Burden Suggested in Langefors' Formula Formula Elements

Variables

Functions

Burden in Langefors' Formula

Burden in Langefors' Formula is the ratio of explosive weight to rock mass, determining efficient rock fragmentation in blasting operations.

Symbol: B_L

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Diameter of Drill Bit

Diameter of Drill Bit in Langefors’ Formula relates rock drillability to bit diameter, expressing the effect of diameter on drilling efficiency and performance.

Symbol: d_b

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Degree of Packing

Degree of Packing is the loading weight per unit of nominal volume.

Symbol: D_p

Measurement: DensityUnit: kg/dm³

Note: Value should be greater than 0.

Weight Strength of Explosive

Weight Strength of Explosive the measure the absolute amount of energy available in each gram of explosive.

Symbol: s

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Rock Constant

Rock Constant is a fundamental geological parameter representing Earth's average continental crust composition, vital for understanding planetary evolution and geodynamics.

Symbol: c

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Degree of Fraction

Degree of Fraction is used for hole characteristics.

Symbol: D_f

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Ratio of Spacing to Burden

Ratio of Spacing to Burden is the relationship between the gap size and load-carrying capacity in structural elements.

Symbol: EV

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

sqrt

A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.

Syntax: sqrt(Number)

Credits

Creator Image

Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Formula and 2100+ more formulas!

Verifier Image

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has verified this Formula and 2600+ more formulas!

Other formulas in Parameters of Vibration Control in Blasting category

Go Frequency of Vibrations caused by Blasting

f = (\frac{V}{λ v})

Go Frequency of Vibration given Velocity of Particle

f = (\frac{v}{2 \cdot π \cdot A})

See More

How to Evaluate Burden Suggested in Langefors' Formula?

Burden Suggested in Langefors' Formula evaluator uses Burden in Langefors' Formula = (Diameter of Drill Bit/33)*sqrt((Degree of Packing*Weight Strength of Explosive)/(Rock Constant*Degree of Fraction*Ratio of Spacing to Burden)) to evaluate the Burden in Langefors' Formula, The Burden Suggested in Langefors' Formula is defined as the distance from the blast hole to the nearest perpendicular free face. Burden in Langefors' Formula is denoted by B_L symbol.

How to evaluate Burden Suggested in Langefors' Formula using this online evaluator? To use this online evaluator for Burden Suggested in Langefors' Formula, enter Diameter of Drill Bit (d_b), Degree of Packing (D_p), Weight Strength of Explosive (s), Rock Constant (c), Degree of Fraction (D_f) & Ratio of Spacing to Burden (EV) and hit the calculate button.

FAQs on Burden Suggested in Langefors' Formula

What is the formula to find Burden Suggested in Langefors' Formula?

The formula of Burden Suggested in Langefors' Formula is expressed as Burden in Langefors' Formula = (Diameter of Drill Bit/33)*sqrt((Degree of Packing*Weight Strength of Explosive)/(Rock Constant*Degree of Fraction*Ratio of Spacing to Burden)). Here is an example- 0.009962 = (0.0975/33)*sqrt((3010*5)/(1.3*2.03*0.5)).

How to calculate Burden Suggested in Langefors' Formula?

With Diameter of Drill Bit (d_b), Degree of Packing (D_p), Weight Strength of Explosive (s), Rock Constant (c), Degree of Fraction (D_f) & Ratio of Spacing to Burden (EV) we can find Burden Suggested in Langefors' Formula using the formula - Burden in Langefors' Formula = (Diameter of Drill Bit/33)*sqrt((Degree of Packing*Weight Strength of Explosive)/(Rock Constant*Degree of Fraction*Ratio of Spacing to Burden)). This formula also uses Square Root (sqrt) function(s).

Can the Burden Suggested in Langefors' Formula be negative?

No, the Burden Suggested in Langefors' Formula, measured in Length cannot be negative.

Which unit is used to measure Burden Suggested in Langefors' Formula?

Burden Suggested in Langefors' Formula is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Burden Suggested in Langefors' Formula can be measured.

Spanish French German Russian Italian Portuguese Polish Dutch

© 2024-2026. Developed & Maintained by softUsvista Inc.

Let Others Know

✖

WhatsApp

Copied!