Mining in Manitoba
Cement Support
Mine Development
Concrete is a popular material for ground support. Concrete can be pumped into an area where the water is drained allowing the concrete to harden. Permanent openings are often sprayed with a concrete lining to prevent oxidation of the walls.
Guniting
Dry concrete mix containing certain additives can be moved with compressed air to a nozzle. It can then be mixed with the proper amounts of watermat the nozzle and blown against a rock face. This shell is called shotcrete.
Sandfill
Sandfill is a mixture of concrete, water, and sand. This system is popular in cut and fill mining methods. As the ore is removed, the opening is filled with sandfill to provide support and a strong floor for the next slice.
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