factors that affect drilling accuracy Flashcards
1
Q
3 keys to blasting efficiency
A
energy confinement, distribution and levels
2
Q
alignment
A
a. Due to instrument and calibration, marking up face and drilling area, alighnment lasers, work practices
3
Q
Collaring
A
a. Due to surface quality, control system, work practices
4
Q
deflection
A
a. Control systesm, alignment, drilling tools
5
Q
Hole length
A
length of blast hole
