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K. Krishnudu, FCC(R), Manager, Mines Group Vocational Training Centre,
Hosapete. Email: krishnudukalva@gmail.com
DESIGN PARAMETERS OF OPENCAST MINE BENCHES
OPEN CAST MINEWORKING
DRILLING FOR BLASTING
BLSTING IN OPENCAST MINE
BENCH WIDTH
BENCH HEIGHT
BENCHES IN OPENCAST MINE
60°
BENCH FACE SLOPE IS MAINTAINED AT 60° FROM
HORIZONTAL
BENCH SLOPE
BENCH FACE SLOPE
TRUCK WIDTH
4 METERS
TRUCK WIDTH
4 METERS
HALF TRUCK WIDTH
2 METERS
CLEARANCE FOR TRUCKS ON TWO WAY
HAUL ROAD WIDTH AS PER DGMS STANDARDS
SAFETY BUND
Haul Road Width = 3 Times the Width of Biggest Vehicle
MINE HAUL ROAD AND ACCESS ROAD TO PIT/MINE
SAFETY BUND
HAUL ROAD GRADIENT
ROAD GRADIENT 1 IN 16 FOR MOVEMENT OF HAUL TRUCKS
SHORT RAMPS 1 IN 10 FOR MOVEMENT OF HEAVY
MACHINERY FROM BENCH TO BENCH
SHORT RAMPS BENCH TO BENCH
ROAD GRADIENT 1 IN 16 FOR MOVEMENT OF HAUL TRUCKS
HAUL ROAD GRADIENT
MATCHING ROADS WITH 1 IN 16 GRADIENT FROM ONE BENCH
TO ANOTHER BENCH FOR TRAVELLING OF DUMPERS
HAUL ROAD GRADIENT
SAFETY BUND
VISIBILITY AT ROAD CURVE ATLEAST 30 METERS AHEAD
ESCAPE LINE IN HAUL ROAD
MATERIAL HAULING ROAD IN MINE BENCH WORKING

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BENCH & ROAD STANDARS IN OPENCAST MINES.pptx