Evaluation of line brattice length in an empty heading to improve air flow rate at the face using CFD

• Main Authors: Tariq Feroze, Bekir Genc
• Format: Article
• Language: English
• Published: Elsevier 2017-03-01
• Series: International Journal of Mining Science and Technology
• Online Access: http://www.sciencedirect.com/science/article/pii/S2095268617300587

The effectiveness of line brattice (LB) ventilation system depends on the associated system variables. However, the effect of these variables on the air flow rates close to the face of the heading is not extensively studied. In this paper, the effect of the LB length in relation to the LB-wall distance on the air flow rate reaching the face is analysed. Scenarios were developed using four LB lengths, two LB-wall distances and two heading depths. These scenarios were simulated with a validated CFD model. The air flow rates and patterns at various locations inside the heading were analysed. This helped to find the minimum LB-face distance that should be maintained for each LB-wall distance to maximise the air flow rate at the face. The minimum length when used will improve ventilation and reduce energy cost. Keywords: Coal mine ventilation, Auxiliary ventilation, Line brattice ventilation system, Computational fluid dynamics