Optimal Sensor Placement Based on Simulation of Gas Distribution in Underground Heading Face

Abstract:

The gas sensor is significant for coalmine production safety. In order to carry out optimal gas sensor placement in heading face, the software named Fluent was used to simulate underground gas distribution. Geometry model was established and divided by grids. Gas distribution in heading face was simulated using RNG k-ε model by Fluent according to conversation equation in turbulent state, turbulent kinetic energy equation and turbulent dissipation rate equation. The results show that gas is likely to accumulate in the upper corner, when wind passes through the corner after washing heading face, wind velocity is unstable, the performance of sensor placed in inner side of turning is different from that placed in outer side of turning. Distance of gas sensor to heading face should be no more than 10m which accords with the mine safety regulations well. The result shows that gas can be monitored effectively by applying this method which has an important value and instructive significance.

• Periodical: Advanced Materials Research (Volumes 562-564)
• Pages: 1788-1791
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.562-564.1788
• Online since: August 2012
• Authors: Feng Ying Ma
• Keywords: Gas Distribution, Heading Face, Optimal Sensor Placement, RNG k-ε Model, Simulation

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