2. Ripping with dozers came into existence in late 1950
It become popular method of excavating soil and rock.
Mostly it is used to excavate overburden.
Ripping is method of loosening rocks using steel tynes attached to the rear of
bulldozers.
These tynes are lowered into the ground which displaces the soil or blocks of
rocks as the whole unit moves forward.
Ripping is usually economic than drilling and blasting. But as the ripping
becomes harder drilling and blasting becomes cheaper.
INTRODUCTION
3. REASONSTO SELECT RIPPING
Ripping is considered due to various reasons as stated below:
Increased productivity: In ripping process there is continuous work going on.
This reduces idle time. It also eliminates shifting of machines which present in
blasting operation.
Safety: There are chances of generation of fly rocks during blasting. Also
chances of misfires are more in blasting operation. Ripping eliminates the
chances of generation of fly rocks and misfires, thereby increasing safety of life
and properties.
Noise and dust reduction: Drilling and blasting creates a lot of noise and dust
which is eliminated by use of rippers.
Product size: Blasting sometimes result in oversize boulders which may
require secondary blasting which is a costly affair. But selection of right kind of
ripper results in right size of material.
Environmental friendly: Ripper provides a pollution free environment to
work.
4. TYPES OF RIPPERS
Hinge type
Parallelogram type
Adjustable parallelogram type
Adjustable radial type
HINGETYPE
7. SIZE OF RIPPER
CONCLUSION
Recent developments in the ripper capabilities have made ripping a viable
operation than drilling and blasting.
Although blasting can be associated with ripping in some cases, but different
studies like initial investment, operating cost, volume produced and cost incurred
studies should be done.
