Method for industrial test of rotary blast hole drills
At present, in the design and construction of smooth blasting, considering few influence that main blast hole 'first blast damage to rock of smooth blasting parameters.
The quantity of explosives and the blast-hole spacing are dependent upon the type and structure of the rock and the diameter and depth of the blast holes.
The mechanic affection on the blast hole walls is simply analysed and cracking propagation caused by shaped charge is explained in this paper.
At the Garson Mine in the Sudbury basin, an instrumented test opening has been mined under a paste backfil1ed blast hole stope.
Level 4 - Causes this unit to attack 100% faster for 20 seconds, but you take 20% more damage.
This paper deals with the blasting parameters, working face blast hole patterns and the initiating system in the E-Bid section of the Furong Road Cable Tunnel Construction Project in Changsha.
