Excavation Test2 part1

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Author:
athoms
ID:
112089
Filename:
Excavation Test2 part1
Updated:
2011-10-25 18:03:31
Tags:
exc test2
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Excavation Test 2 part1
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  1. Priming

    A primer is________

    The resulting detonation will______

    A primer contains an _____ unlike a booster____
  2. Properties of Primers (4)
  3. Detonation Velocity
  4. Primer Diameter
  5. Water Resistance
  6. Detonation energy
  7. Types Of Primer (3)
  8. Bottom Priming (4)
  9. Multiple Priming
  10. Primer Selection Guidelines (4)
  11. Conditions that may influence the selection of an initiation system. (4)
  12. Parameters to be considered in understanding the fragmentation process:
    -
    -
    -
    -
    -
    - +5
    -
  13. Time events for rock breakage: (4)
    • Detonation Phase
    • Shock or stress wave propgation
    • Gas pressure expansion phase
    • Rock mass movement phase
  14. Optimum explosive performance
    three factors to be considered
  15. Burden
  16. Bench Height

    Determind by: 4

    -

    -
  17. Bench Height Burden Relationship
    4
    
  18. Spacing
    4
  19. Subdrilling

    equation + 5
  20. Stemming
  21. Types of blasting cuts (3+2)
  22. Blasthole Pattern Configurations (4 + 1)
    • Regular Square B=S
    • Staggered Square B=S
    • Regular rectangle B<S
    • Staggered Rectangle B<S

    Optimum pattern ==> S = 1.15B

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