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Insitu Block Size Measurement
| Using conventional standard joint mapping techniques developed by Noranda Mines, a
model of blocky ground is formed using an iterative block splitting algorithm. The
space is defined as 12 m by 12 m zone surrounding an underground tunnel. The model
can be rotated in space, to be viewed from any angle. |
From this simulation, an block size distribution can be calculated:
A cross section of the tunnel can be viewed at any position along the tunnel:
Individual blocks can be viewed:
A rock bolt pattern can be added to the problem:
The Influence of each rockbolt can be evaluated:
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REFERENCES:
Maerz, N. H.,
Germain, P., 1996. Block size determination
around underground openings using simulations. Proceedings of the FRAGBLAST 5 Workshop
on Measurement of Blast Fragmentation, Montreal, Quebec, Canada, 23-24 Aug., 1996, pp.
215-223.
Maerz, N. H., and
Germain, P., 1992. Block
size determination around underground openings using simulations based on scanline mapping.
Proc. Fractured and Jointed Rock Masses, Lake Tahoe, June, 1992, 8 pp.
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