Underground mine ventilation curtain or barrier
a ventilation curtain and mine technology, applied in the direction of props/chocks, earthwork drilling and mining, mining structures, etc., can solve the problems of air leakage above and below the curtain, large amount of waste of air cooling them unnecessarily,
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[0023]In the embodiment of the first variation of the invention illustrated in FIGS. 1 to 3 a flexible mine ventilation curtain, generally indicated by numeral (1), comprises, in the operative condition, a generally upright curtain (2) extending from a foot wall compartment (3) that engages the footwall (4) in an underground mine to an overhanging hanging wall (5).
[0024]Both the curtain and footwall compartment are made of a water permeable flexible sheet material, typically a geotextile material or a suitable membrane, and the footwall compartment could be made by stitching the sheet material back upon itself to provide a suitable cross-sectional size of footwall compartment. The flexible sheet material is selected so that it allows water to pass through it whilst retaining solids such as a cementitious grout or backfill material within the footwall compartment. The footwall compartment has a nonreturn inlet valve (6) for the introduction of slurry into the compartment.
[0025]The ve...
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