DRILLING AND BLASTING PROCESS
1.DEFINED ROCK
SIZE AND HARDNESS ROCK
AUTHORITIES
TRENCH V MASS ROCK
2.MACHINERIES
BLAST HOLE DRILLING MACHINE
-ROCK BLASTING DRILLING RANGE 10 TO 20 FEET LENGTH CONTINUALLY ADDED TO REACH BOTTOM OR DEPTH TO BE BLASTED
FLUSHED WITH WATER
CONTRACTOR MUST BE EXPERT EXPRIENCED
3.LOADING AND BLASTING
DYNAMITE AND NFO
1-8 INCH DIA 8-24 INCH LENGTH
DETONATOR AND PRIMACORD USED TO FIRED DYNAMITE
AMMONIUM NITRATE AND FUEL DIESEL USED IN NFO DYNAMITE
MILISECOND DELAY ELECTRONIC DETONATOR FREQUENTLY USED
FRAGMENTATION
VIBRATION AND AIR BLAST
FLYROCK CAN MINIMIZED SIMULTANEOUS ROW BLAST
EXCAVATE
REMOVING RUBBLE FROM SITE
LOADER AND DUMP TRUCK