Open Pit Blasting Pattern Design
Here is a new style of form that has calculation of Open Pit Blasting Pattern Design. With this form you can register your email and then calculated fields will be sent to you via e-mail with pdf format. I think this form is more useful and easier way to share the results with users that the other calculated form.
You can share your idea with me. Anyway, I’ve completed the translating of my excel sheet from my native language Turkish to English. I hope it works for you. May be a few days later or more, I can finish the design completion and share with you my other calculation plans like planning with blasting results, budgeting or cost calculations and etc.
Partical size was not giving any result. It has been corrected.
Ins. velocity and Flying Rock Distance have been added.
Fiealds below have been added the form.
Number of Working Day In a Year
Required Number of Holes (holes)
Required Daily Number of Holes (holes/day)
Total Required Anfo (kg)
Total Required Dynamite (kg)
Total Required Number of Handidet
1. d Hole Diameter (mm) 2. γp Explosive Density (Anfo) (kg/m3) 3. Rd Rock Density (t/m3) 4. Ro Ore Density (t/m3) 5. fe Hole Inclination Correction Factor (fe) 6. fk Rock Factor (fk) 7. H Bench Height (m) 8. C Face (m) 1. Ql=πxd2xγp Explosive Charge Per Meter (kg/m) 2. amax=1,36xQl1/2xfexfk Maximum Burden (Bmax) (m) 3. a=amax-Δ Pratical Burden (m) Δ=10^-3xd+0,03Ld 4. b=1,25xa Spacing (m) 5. lt=amaxx0,3 Subdrill (m) 6. Ld=H+lt Total Hole Depth (m) 7. h=Ld/3 Stemming (m) 8. bd=C/(aralık sayısı/sıra) Number of Distances 9. nd=1+bd Number of holes at a row 10. lö=(ndxLd)/(axHxC) Spesific Hole Depth (m/m3) 11. Q=Qlxlp Explosive Charge Per Hole (kg/hole) lp=Ld-a 12. q=(ndxQ)/(axHxC) Powder Factor (kg/m3) 13. V=axbxH Volume per hole (m3) 14. Vt=Vxnd Total Blasted Volume (m3) 15. S=D^2/2,8 //D (inch) S(ft) Spacing for Pre-Split (m) 16. Tb=0,1xD^2/3 //D (inch) Partical Size (m) 17. Vb=(10xDx2600)/(TbxRd) //D (inch) instantaneous velocity for Rock (m/s) 18. Vb=(10xDx2600)/(TbxRo)) //D (inch) instantaneous velocity for Ore (m/s) 19. L=143xDx(q-0,2) //D (inch) Distance of Flying Rock (m)