Suraj Kumar
Birsa Institute of Technology (BIT), Sindri
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Ishita Goyal
Meerut Institute of Engineering and Technology (MIET), Meerut
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6 Other formulas that you can solve using the same Inputs

Diameter of Drill Bit when Burden Suggested in Langefors' Formula is Given
Diameter of drill bit=(33*Burden)*sqrt((Rock constant*Degree of fraction*Ratio of spacing to burden)/(Degree of packing*Weight strength of explosive)) Go
Ratio of Spacing to Burden when Burden Suggested in Langefors' Formula is Given
Ratio of spacing to burden=(Diameter of drill bit/33*Burden)^2*((Degree of packing*Weight strength of explosive)/(Rock constant*Degree of fraction)) Go
Weight Strength of Explosive when Burden Suggested in Langefors' Formula is Given
Weight strength of explosive=(33*Burden/Diameter of drill bit)^2*((Ratio of spacing to burden*Rock constant*Degree of fraction)/Degree of packing) Go
Degree of Packing when Burden Suggested in Langefors' Formula is Given
Degree of packing=(33*Burden/Diameter of drill bit)^2*((Ratio of spacing to burden*Rock constant*Degree of fraction)/Weight strength of explosive) Go
Drill Point Angle in when Length Of Approach is Given
Drill Point Angle=atan(0.5*Diameter of drill bit/Length of Approach)*360/pi Go
Length of Approach for Drilling Operation
Length of Approach=0.5*Diameter of drill bit*cot(Drill Point Angle/2) Go

4 Other formulas that calculate the same Output

Burden Suggested in Konya Formula
Burden=(3.15*Diameter of explosive)*(Specific gravity of the explosive/Specific gravity of the rock)^(1/3) Go
Distance from the Blast Hole to the Nearest Perpendicular Free Face or Burden
Burden=sqrt(Diameter of borehold*Length of borehole) Go
Burden when Spacing for Multiple Simultaneous Blasting is Given
Burden=(Spacing in blasting)^2/Length of borehole Go
Burden when Stemming at Top of Borehole is Given
Burden=(Stemming-(Overburden/2))/0.7 Go

Burden Suggested in Langefors' Formula Formula

Burden=(Diameter of drill bit/33)*sqrt((Degree of packing*Weight strength of explosive)/(Rock constant*Degree of fraction*Ratio of spacing to burden))
B=(d<sub>b</sub>/33)*sqrt((P*s)/(c*f*E/V))
More formulas
Wavelength of Vibrations Caused by Blasting Go
Velocity of Vibrations Caused by Blasting Go
Frequency of Vibrations Caused by Blasting Go
Velocity of The Particles Disturbed by the Vibrations Go
Frequency of Vibration when Velocity of the Particle is Given Go
Amplitude of the Vibrations when Velocity of the Particle is Given Go
Velocity of Particle One at a Distance from the Explosion Go
Velocity of Particle Two at a Distance from the Explosion Go
Distance of Particle One from the Site of Explosion Go
Distance of Particle Two from the Site of Explosion when Velocity is Given Go
Acceleration of Particles Disturbed by the Vibrations Go
Frequency of Vibration when Acceleration of Particles is Given Go
Amplitude of the Vibrations when Acceleration of Particles is Given Go
Overpressure due to Charge Exploded on the Ground Surface Go
Maximum Weight of Explosives when Overpressure is Given Go
Distance From Explosion to Exposure when Overpressure is Given Go
Sound Pressure Level in Decibels Go
Overpressure when Sound Pressure Level in Decibels is Given Go
Scaled Distance for Vibration Control Go
Distance to Exposure when Scaled Distance for Vibration Control is Given Go
Maximum Weight of Explosives when Scaled Distance for Vibration Control is Given Go
Minimum Length of the Borehole in Feet Go
Diameter of the Borehole when Minimum Length of the Borehole is Given Go
Minimum Length of the Borehole in Meter Go
Distance from the Blast Hole to the Nearest Perpendicular Free Face or Burden Go
Diameter of Borehole when Burden is Given Go
Length of Borehole when Burden is Given Go
Diameter of Drill Bit when Burden Suggested in Langefors' Formula is Given Go
Ratio of Spacing to Burden when Burden Suggested in Langefors' Formula is Given Go
Degree of Packing when Burden Suggested in Langefors' Formula is Given Go
Weight Strength of Explosive when Burden Suggested in Langefors' Formula is Given Go
Burden Suggested in Konya Formula Go
Diameter of the Explosive when Burden Suggested in Konya Formula is Given Go
Specific Gravity of the Explosive when Burden Suggested in Konya Formula is Given Go
Specific Gravity of the Rock when Burden Suggested in Konya Formula is Given Go
Spacing for Multiple Simultaneous Blasting Go
Burden when Spacing for Multiple Simultaneous Blasting is Given Go
Length of Borehole when Spacing for Multiple Simultaneous Blasting is Given Go
Stemming at Top of Borehole to Prevent the Explosive Gases from Escaping Go
Burden when Stemming at Top of Borehole is Given Go
Overburden when Stemming at Top of Borehole is Given Go

What is burden ?

The burden is the distance from the blast hole to the nearest perpendicular free face. The true burden can vary depending upon the delay system used for the blast.

How to Calculate Burden Suggested in Langefors' Formula?

Burden Suggested in Langefors' Formula calculator uses Burden=(Diameter of drill bit/33)*sqrt((Degree of packing*Weight strength of explosive)/(Rock constant*Degree of fraction*Ratio of spacing to burden)) to calculate the Burden, The Burden Suggested in Langefors' Formula is defined as the distance from the blast hole to the nearest perpendicular free face. Burden and is denoted by B symbol.

How to calculate Burden Suggested in Langefors' Formula using this online calculator? To use this online calculator for Burden Suggested in Langefors' Formula, enter Diameter of drill bit (db), Degree of packing (P), Weight strength of explosive (s), Rock constant (c), Degree of fraction (f) and Ratio of spacing to burden (E/V) and hit the calculate button. Here is how the Burden Suggested in Langefors' Formula calculation can be explained with given input values -> 1.432786 = (0.003/33)*sqrt((3000000*5)/(1.3*1*0.5)).

FAQ

What is Burden Suggested in Langefors' Formula?
The Burden Suggested in Langefors' Formula is defined as the distance from the blast hole to the nearest perpendicular free face and is represented as B=(db/33)*sqrt((P*s)/(c*f*E/V)) or Burden=(Diameter of drill bit/33)*sqrt((Degree of packing*Weight strength of explosive)/(Rock constant*Degree of fraction*Ratio of spacing to burden)). Diameter of drill bit used in Langefors’ Formula for calculating burden, Degree of packing is the loading weight per unit of nominal volume, Weight strength of explosive the measure the absolute amount of energy available in each gram of explosive, Rock constant tells us about properties of intact rock , Degree of fraction is used for hole characteristics and Ratio of spacing to burden is a unit less quantity.
How to calculate Burden Suggested in Langefors' Formula?
The Burden Suggested in Langefors' Formula is defined as the distance from the blast hole to the nearest perpendicular free face is calculated using Burden=(Diameter of drill bit/33)*sqrt((Degree of packing*Weight strength of explosive)/(Rock constant*Degree of fraction*Ratio of spacing to burden)). To calculate Burden Suggested in Langefors' Formula, you need Diameter of drill bit (db), Degree of packing (P), Weight strength of explosive (s), Rock constant (c), Degree of fraction (f) and Ratio of spacing to burden (E/V). With our tool, you need to enter the respective value for Diameter of drill bit, Degree of packing, Weight strength of explosive, Rock constant, Degree of fraction and Ratio of spacing to burden and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Burden?
In this formula, Burden uses Diameter of drill bit, Degree of packing, Weight strength of explosive, Rock constant, Degree of fraction and Ratio of spacing to burden. We can use 4 other way(s) to calculate the same, which is/are as follows -
  • Burden=sqrt(Diameter of borehold*Length of borehole)
  • Burden=(3.15*Diameter of explosive)*(Specific gravity of the explosive/Specific gravity of the rock)^(1/3)
  • Burden=(Spacing in blasting)^2/Length of borehole
  • Burden=(Stemming-(Overburden/2))/0.7
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