Spacing for Multiple Simultaneous Blasting Calculator

✖Burden is the distance from the blast hole to the nearest perpendicular free face.ⓘ Burden [B]			+10% -10%
✖Length of Borehole is the longer dimension of the borehole.ⓘ Length of Borehole [L]			+10% -10%

✖Blasting Space denotes the lateral distance on centers between holes in a row.ⓘ Spacing for Multiple Simultaneous Blasting [S_b]

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Formula

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Spacing for Multiple Simultaneous Blasting

Formula

`"S"_{"b"} = sqrt("B"*"L")`

Example

`"16.81666ft"=sqrt("14ft"*"20.2ft")`

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Download Vibration Control in Blasting Formulas PDF

Spacing for Multiple Simultaneous Blasting Solution

STEP 0: Pre-Calculation Summary

Formula Used

Blasting Space = sqrt(Burden*Length of Borehole)
S_b = sqrt(B*L)
This formula uses 1 Functions, 3 Variables

Functions Used

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., sqrt(Number)

Variables Used

Blasting Space - (Measured in Foot) - Blasting Space denotes the lateral distance on centers between holes in a row.
Burden - (Measured in Foot) - Burden is the distance from the blast hole to the nearest perpendicular free face.
Length of Borehole - (Measured in Foot) - Length of Borehole is the longer dimension of the borehole.

STEP 1: Convert Input(s) to Base Unit

Burden: 14 Foot --> 14 Foot No Conversion Required
Length of Borehole: 20.2 Foot --> 20.2 Foot No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

S_b = sqrt(B*L) --> sqrt(14*20.2)

Evaluating ... ...

S_b = 16.8166584076623

STEP 3: Convert Result to Output's Unit

5.12571748267598 Meter -->16.8166584076623 Foot (Check conversion here)

FINAL ANSWER

16.8166584076623 ≈ 16.81666 Foot <-- Blasting Space

(Calculation completed in 00.004 seconds)

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

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Indian Institute of Information Technology (IIIT), Bhopal

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< 22 Vibration Control in Blasting Calculators

Diameter of Drill Bit using Burden Suggested in Langefors' Formula

Go Diameter of Drill Bit = (Burden in Langefors' Formula*33)*sqrt((Rock Constant*Degree of Fraction*Ratio of Spacing to Burden)/(Degree of Packing*Weight Strength of Explosive))

Weight Strength of Explosive using Burden Suggested in Langefors' Formula

Go Weight Strength of Explosive = (33*Burden in Langefors' Formula/Diameter of Drill Bit)^2*((Ratio of Spacing to Burden*Rock Constant*Degree of Fraction)/Degree of Packing)

Maximum Weight of Explosives given Scaled Distance for Vibration Control

Go Maximum Weight of Explosives per Delay = ((Distance from Explosion to Exposure)^(-Constant of Scaled Distance β)*(Constant of Scaled Distance/Scaled Distance))^(-2/Constant of Scaled Distance β)

Distance to Exposure given Scaled Distance for Vibration Control

Go Distance from Explosion to Exposure = sqrt(Maximum Weight of Explosives per Delay)*(Scaled Distance/Constant of Scaled Distance)^(-1/Constant of Scaled Distance β)

Scaled Distance for Vibration Control

Go Scaled Distance = Constant of Scaled Distance*(Distance from Explosion to Exposure/sqrt(Maximum Weight of Explosives per Delay))^(-Constant of Scaled Distance β)

Distance of Particle Two from Site of Explosion given Velocity

Go Distance of Particle 2 from Explosion = Distance of Particle 1 from Explosion*(Velocity of Particle with Mass m1/Velocity of Particle with Mass m2)^(2/3)

Velocity of Particle One at Distance from Explosion

Go Velocity of Particle with Mass m1 = Velocity of Particle with Mass m2*(Distance of Particle 2 from Explosion/Distance of Particle 1 from Explosion)^(1.5)

Velocity of Particle Two at distance from Explosion

Go Velocity of Particle with Mass m2 = Velocity of Particle with Mass m1*(Distance of Particle 1 from Explosion/Distance of Particle 2 from Explosion)^(1.5)

Distance of Particle One from Site of Explosion

Go Distance of Particle 1 from Explosion = Distance of Particle 2 from Explosion*(Velocity of Particle with Mass m2/Velocity of Particle with Mass m1)^(2/3)

Diameter of Explosive using Burden Suggested in Konya Formula

Go Diameter of Explosive = (Burden/3.15)*(Specific Gravity of Rock/Specific Gravity of Explosive)^(1/3)

Specific Gravity of Explosive using Burden Suggested in Konya Formula

Go Specific Gravity of Explosive = Specific Gravity of Rock*(Burden/(3.15*Diameter of Explosive))^3

Specific Gravity of Rock using Burden Suggested in Konya Formula

Go Specific Gravity of Rock = Specific Gravity of Explosive*((3.15*Diameter of Explosive)/Burden)^3

Acceleration of Particles disturbed by Vibrations

Go Acceleration of Particles = (4*(pi*Frequency of Vibration)^2*Amplitude of Vibration)

Velocity of Particles disturbed by Vibrations

Go Velocity of Particle = (2*pi*Frequency of Vibration*Amplitude of Vibration)

Distance from Blast Hole to Nearest Perpendicular Free Face or Burden

Go Burden = sqrt(Diameter of Borehole*Length of Borehole)

Spacing for Multiple Simultaneous Blasting

Go Blasting Space = sqrt(Burden*Length of Borehole)

Wavelength of Vibrations caused by Blasting

Go Wavelength of Vibration = (Velocity of Vibration/Frequency of Vibration)

Velocity of Vibrations caused by Blasting

Go Velocity of Vibration = (Wavelength of Vibration*Frequency of Vibration)

Stemming at Top of Borehole to Prevent Explosive Gases from Escaping

Go Stemming at Top of Borehole = (0.7*Burden)+(Overburden/2)

Overburden given Stemming at Top of Borehole

Go Overburden = 2*(Stemming at Top of Borehole-(0.7*Burden))

Sound Pressure Level in Decibels

Go Sound Pressure Level = (Overpressure/(6.95*10^(-28)))^0.084

Diameter of Borehole using Minimum Length of Borehole

Go Diameter of Borehole = (Length of Borehole/2)

Spacing for Multiple Simultaneous Blasting Formula

Blasting Space = sqrt(Burden*Length of Borehole)
S_b = sqrt(B*L)

What is Spacing and Burden?

Spacing and burden are important parameters and have immediate impacts on rock fragmentation in blast design. Excessive burden creates resistance to penetrate the explosion gases into the fracture and displace rock, and will also produce excessive vibration level.

How to Calculate Spacing for Multiple Simultaneous Blasting?

Spacing for Multiple Simultaneous Blasting calculator uses Blasting Space = sqrt(Burden*Length of Borehole) to calculate the Blasting Space, The Spacing for Multiple Simultaneous Blasting is defined as the spacing provided in blasting when burden and length of borehole is known. Blasting Space is denoted by S_b symbol.

How to calculate Spacing for Multiple Simultaneous Blasting using this online calculator? To use this online calculator for Spacing for Multiple Simultaneous Blasting, enter Burden (B) & Length of Borehole (L) and hit the calculate button. Here is how the Spacing for Multiple Simultaneous Blasting calculation can be explained with given input values -> 54.89895 = sqrt(4.26720000001707*6.15696000002463).

FAQ

What is Spacing for Multiple Simultaneous Blasting?

The Spacing for Multiple Simultaneous Blasting is defined as the spacing provided in blasting when burden and length of borehole is known and is represented as S_b = sqrt(B*L) or Blasting Space = sqrt(Burden*Length of Borehole). Burden is the distance from the blast hole to the nearest perpendicular free face & Length of Borehole is the longer dimension of the borehole.

How to calculate Spacing for Multiple Simultaneous Blasting?

The Spacing for Multiple Simultaneous Blasting is defined as the spacing provided in blasting when burden and length of borehole is known is calculated using Blasting Space = sqrt(Burden*Length of Borehole). To calculate Spacing for Multiple Simultaneous Blasting, you need Burden (B) & Length of Borehole (L). With our tool, you need to enter the respective value for Burden & Length of Borehole and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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