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Analysis of Blast Fragmentation:
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Blasting is used to break rock out a solid bench. But is also the
most inexpensive way to break rock, much less expensive than crushing, grinding, or
secondary blasting. |
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After a blast, the resulting fragmentation is spread out before you. |
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You know that there is an optimum size distribution for your application.
You just don't know how to measure that distribution. |
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Screening is certainly not an option, it is much to expensive and time
consuming. |
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Image processing is a cost effective alternative. It requires images
of rock be digitized, and their outlines defined by a computer program. |
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The blocks are then measured for size. |
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And a graph is generated. |
| WipFrag is a new
automated, PC based fragmentation analysis system that uses state of the art photoanalysis
to measure broken rock or other particles. WipFrag was developed by Dr. John A. Franklin
and Dr. Norbert H. Maerz in collaboration with researchers from the University of Waterloo
and with industrial groups, with a solid understanding of blasting, mining methods,
geotechnical influences, and mineral processing requirements.
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REFERENCES:
Maerz, N. H., and
Zhou, W., 1999. Calibration
of optical digital fragmentation measuring systems. Submitted to
FRAGBLAST, Mar. 2,
1999.
Maerz, N. H., and
Zhou, W., 1998. Optical digital
fragmentation measuring systems - inherent sources of error.
FRAGBLAST, The International Journal for Blasting and Fragmentation, Vol. 2,
No. 4, pp. 415-431.
Maerz, N. H., and Palangio, T. C.
WipFrag
System II - Online fragmentation analysis. FRAGBLAST 6, Sixth
International Symposium For Rock Fragmentation By Blasting, Johannesburg,
South Africa, Aug. 8-12 1999, pp. 111-115.
Palangio, T. C. and
Maerz, N. H., 1999. Case
studies using the WipFrag image analysis system.. FRAGBLAST 6,
Sixth International Symposium For Rock Fragmentation By Blasting,
Johannesburg, South Africa, Aug. 8-12 1999, pp. 117-120.
Maerz, N. H., 1996. Reconstructing 3-D block size
distributions from 2-D measurements on sections. Proceedings of the FRAGBLAST 5
Workshop on Measurement of Blast Fragmentation, Montreal, Quebec, Canada, 23-24 Aug.,
1996, pp. 39-43.
Maerz, N. H., 1996. Image sampling techniques and
requirements for automated image analysis of rock fragmentation. Proceedings of the
FRAGBLAST 5 Workshop on Measurement of Blast Fragmentation, Montreal, Quebec, Canada,
23-24 Aug., 1996, pp. 115-120.
Maerz, N. H.,
Palangio, T. C., and Franklin, J. A., 1996. WipFrag
image based granulometry system. Proceedings of the FRAGBLAST 5 Workshop on
Measurement of Blast Fragmentation, Montreal, Quebec, Canada, 23-24 Aug., 1996, pp. 91-99.
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