Length of Borehole given Spacing for Multiple Simultaneous Blasting Calculator

✖Blasting Space denotes the lateral distance on centers between holes in a row.ⓘ Blasting Space [S_b]			+10% -10%
✖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 given Spacing for Multiple Simultaneous Blasting [L]

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Length of Borehole given Spacing for Multiple Simultaneous Blasting

Formula

`"L" = ("S"_{"b"})^2/"B"`

Example

`"18.28571ft"=("16ft")^2/"14ft"`

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Length of Borehole given Spacing for Multiple Simultaneous Blasting Solution

STEP 0: Pre-Calculation Summary

Formula Used

Length of Borehole = (Blasting Space)^2/Burden
L = (S_b)^2/B
This formula uses 3 Variables

Variables Used

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

STEP 1: Convert Input(s) to Base Unit

Blasting Space: 16 Foot --> 4.87680000001951 Meter (Check conversion here)
Burden: 14 Foot --> 4.26720000001707 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

L = (S_b)^2/B --> (4.87680000001951)^2/4.26720000001707

Evaluating ... ...

L = 5.57348571430801

STEP 3: Convert Result to Output's Unit

5.57348571430801 Meter -->18.2857142857143 Foot (Check conversion here)

FINAL ANSWER

18.2857142857143 ≈ 18.28571 Foot <-- Length of Borehole

(Calculation completed in 00.004 seconds)

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Home » Engineering » Civil » Geotechnical Engineering » Vibration Control in Blasting » Parameters of Vibration Control in Blasting » Length of Borehole given Spacing for Multiple Simultaneous Blasting

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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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< 17 Parameters of Vibration Control in Blasting Calculators

Burden Suggested in Langefors' Formula

Go 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))

Frequency of Vibration given Acceleration of Particles

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

Burden Suggested in Konya Formula

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

Amplitude of Vibrations given Acceleration of Particles

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

Distance from Explosion to Exposure given Overpressure

Go Distance from Explosion to Exposure = ((226.62/Overpressure))^(1/1.407)*(Maximum Weight of Explosives per Delay)^(1/3)

Overpressure due to Charge Exploded on Ground Surface

Go Overpressure = 226.62*((Maximum Weight of Explosives per Delay)^(1/3)/Distance from Explosion to Exposure)^(1.407)

Amplitude of Vibrations using Velocity of Particle

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

Frequency of Vibration given Velocity of Particle

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

Frequency of Vibrations caused by Blasting

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

Burden given Stemming at Top of Borehole

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

Diameter of Borehole using Burden

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

Length of Borehole using Burden

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

Length of Borehole given Spacing for Multiple Simultaneous Blasting

Go Length of Borehole = (Blasting Space)^2/Burden

Burden given Spacing for Multiple Simultaneous Blasting

Go Burden = (Blasting Space)^2/Length of Borehole

Overpressure given Sound Pressure Level in Decibels

Go Overpressure = (Sound Pressure Level)^(1/0.084)*(6.95*10^(-28))

Minimum Length of Borehole in Meter

Go Length of Borehole = (2*25.4*Diameter of Bore Pith Circle)

Minimum Length of Borehole in Feet

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

Length of Borehole given Spacing for Multiple Simultaneous Blasting Formula

Length of Borehole = (Blasting Space)^2/Burden
L = (S_b)^2/B

What is Borehole?

A borehole may be constructed for many different purposes, including the extraction of water, other liquids (such as petroleum) or gases (such as natural gas), as part of a geotechnical investigation, environmental site assessment, mineral exploration, temperature measurement, as a pilot hole for installing piers

How to Calculate Length of Borehole given Spacing for Multiple Simultaneous Blasting?

Length of Borehole given Spacing for Multiple Simultaneous Blasting calculator uses Length of Borehole = (Blasting Space)^2/Burden to calculate the Length of Borehole, The Length of Borehole given Spacing for Multiple Simultaneous Blasting is defined as the longer dimension of the borehole when spacing and burden is known. Length of Borehole is denoted by L symbol.

How to calculate Length of Borehole given Spacing for Multiple Simultaneous Blasting using this online calculator? To use this online calculator for Length of Borehole given Spacing for Multiple Simultaneous Blasting, enter Blasting Space (S_b) & Burden (B) and hit the calculate button. Here is how the Length of Borehole given Spacing for Multiple Simultaneous Blasting calculation can be explained with given input values -> 59.9925 = (4.87680000001951)^2/4.26720000001707.

FAQ

What is Length of Borehole given Spacing for Multiple Simultaneous Blasting?

The Length of Borehole given Spacing for Multiple Simultaneous Blasting is defined as the longer dimension of the borehole when spacing and burden is known and is represented as L = (S_b)^2/B or Length of Borehole = (Blasting Space)^2/Burden. Blasting Space denotes the lateral distance on centers between holes in a row & Burden is the distance from the blast hole to the nearest perpendicular free face.

How to calculate Length of Borehole given Spacing for Multiple Simultaneous Blasting?

The Length of Borehole given Spacing for Multiple Simultaneous Blasting is defined as the longer dimension of the borehole when spacing and burden is known is calculated using Length of Borehole = (Blasting Space)^2/Burden. To calculate Length of Borehole given Spacing for Multiple Simultaneous Blasting, you need Blasting Space (S_b) & Burden (B). With our tool, you need to enter the respective value for Blasting Space & 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 Length of Borehole?

In this formula, Length of Borehole uses Blasting Space & Burden. We can use 3 other way(s) to calculate the same, which is/are as follows -

Length of Borehole = (2*Diameter of Borehole)
Length of Borehole = (2*25.4*Diameter of Bore Pith Circle)
Length of Borehole = (Burden)^2/Diameter of Borehole

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