Brattice

Brattice

The effect of mining layout, regional pillars and backfill support on delaying expected shaft deformation at Bambanani mine

Published in Vladimir Litvinenko, EUROCK2018: Geomechanics and Geodynamics of Rock Masses, 2018

Damage within the shaft barrel, in terms of steelwork buckling, concrete unravelling and brattice wall failure are because of displacement generated whilst mining. This displacement can be estimated by means of induced strain within the shaft.

Comparison of the CAS-POL and IOM samplers for determining the knockdown efficiencies of water sprays on float coal dust

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Journal Information

Published in Journal of Occupational and Environmental Hygiene, 2018

Clara E. Seaman, Michael R. Shahan, Timothy W. Beck, Steven E. Mischler

All tests were conducted at a full-scale longwall gallery test facility at the National Institute for Occupational Safety and Health (NIOSH) Pittsburgh Mining Research Division. The simulated face is 38.1 m long by 5.5 m wide and 2.29 m high from floor to roof. Nineteen mock 1.8-m longwall shields cover the length of the longwall section, and a full-scale mock-up Joy 7LS double ranging arm shearer is located approximately halfway between the headgate and tailgate of the testing gallery. Brattice curtain was suspended from the shields, spanning from shield 11 to shield 3, creating a tunnel 1.7 m high by 0.91 m wide that minimized irregularities in the airflow due to the shearer (Figure 1). Ventilation of the tunnel was set to 3.5 m/s.

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The effect of mining layout, regional pillars and backfill support on delaying expected shaft deformation at Bambanani mine

Comparison of the CAS-POL and IOM samplers for determining the knockdown efficiencies of water sprays on float coal dust