There are two methods to calculate total numbers of hole. 1) Go through the Handbook of blasting published by ICI Australia., wherein ready reconer is given for obtaining the required numbers of hole for various cross sectional area. 2) You can calculate the burden and Spacing of hole as per the formulas given and explained in my earlier video. Calculation of required qty of Explosive 1)This information may also be obtained in above stated hand book. 2) Required qty. Of Explosive may be calculated on the basis of expected Powder factor of rock to be blasted.
Cross sectional area of horse sheo shape of Tunnel may be calculated by formula. Area above SPL may be calculated easily because same is semi circle. But , for portion below SPL is also available which is exhaustive and complex , hence explanation of same is no possible here.
How to find total nor of holes by formula in burn cut? How to find area of horseshoe tunnel , D shape tunnel? How to find total explosives to be used in the design pattern?
You are Great Sir ,God give you long live and good heath .
Sir you are great
There are two methods to calculate total numbers of hole.
1) Go through the Handbook of blasting published by ICI Australia., wherein ready reconer is given for obtaining the required numbers of hole for various cross sectional area.
2) You can calculate the burden and Spacing of hole as per the formulas given and explained in my earlier video.
Calculation of required qty of Explosive
1)This information may also be obtained in above stated hand book.
2) Required qty. Of Explosive may be calculated on the basis of expected Powder factor of rock to be blasted.
Sir super pls share ur knowledge to us
Thanks
Good video
Thanks sir
👍👍👍👍
Greetings!
How to determine reamer hole dia ( empty centre hole) . I like your videos.
Engr Mehtab Hussain
Mining Engr.
Pakistan
Reamer hole dia is depend up on the number of holes.If it is one number then its dia should not be less than 100 mm
Sir kindly enlighten me on deciding the cut area for wedge cut also.
How to decide the cut area in wedge cut drilling pattern
Is there any graph for determination of empty hole diameter
No any graph is available for this topic . MT holes are provided only for weakening.the rock mass.
Cross sectional area of horse sheo shape of Tunnel may be calculated by formula. Area above SPL may be calculated easily because same is semi circle. But , for portion below SPL is also available which is exhaustive and complex , hence explanation of same is no possible here.
Sir horse shoe shape tunnel ko v explain karo thoda
Ok
How to find total nor of holes by formula in burn cut?
How to find area of horseshoe tunnel , D shape tunnel?
How to find total explosives to be used in the design pattern?