Design of push–pull system to control diesel particular matter inside a dead-end entry

Diesel particulate matter (DPM) is considered to be carcinogenic after prolonged exposure. With more diesel-powered equipment used in underground mines, miners’ exposure to DPM has become an increasing concern. This paper used computational fluid dynamics method to study the DPM dispersion in a dead-end entry with loading operation. The effects of different push–pull ventilation systems on DPM distribution were evaluated to improve the working conditions for underground miners. The four push–pull systems considered include: long push and short pull tubing; short push and long pull tubing, long push and curved pull tubing, and short push and curved pull tubing. A species transport model with buoyancy effect was used to examine the DPM dispersion pattern with unsteady state analysis. During the 200 s of loading operation, high DPM levels were identified in the face and dead-end entry regions. This study can be used for mining engineer as guidance to design and setup local ventilation, select DPM control strategies and for DPM annual training for underground miners.

[1]  Yi Zheng,et al.  Simulation of DPM distribution in a long single entry with buoyancy effect , 2015 .

[2]  J. F. Wade,et al.  Diesel asthma. Reactive airways disease following overexposure to locomotive exhaust. , 1993, Journal of occupational medicine. : official publication of the Industrial Medical Association.

[3]  Y. Rosa Zheng,et al.  DPM dispersion study using CFD for underground metal/nonmetal mines , 2008 .

[4]  R. Grau,et al.  The effects of ventilation controls and environmental cabs on diesel particulate matter concentrations in some limestone mines , 2008 .

[5]  Ting Ren,et al.  Development of Innovative Goaf Inertisation Practices to Improve Coal Mine Safety , 2005 .

[6]  Yi Zheng,et al.  DPM dissipation experiment at MST’s experimental mine and comparison with CFD simulation , 2011 .

[7]  David Hargreaves,et al.  The computational modeling of the ventilation flows within a rapid development drivage , 2007 .

[8]  Dimitrios T. Hountalas,et al.  Effect of Fuel Chemical Structure and Properties on Diesel Engine Performance and Pollutant Emissions: Review of the Results of Four European Research Programs , 2008 .

[9]  Aleksandar D. Bugarski,et al.  Diesel aerosols and gases in underground mines; guide to exposure assessment and control , 2011 .

[10]  T. Sandström,et al.  Effects on symptoms and lung function in humans experimentally exposed to diesel exhaust. , 1996, Occupational and environmental medicine.

[11]  P Orris,et al.  Acute overexposure to diesel exhaust: report of 13 cases. , 1988, American journal of industrial medicine.

[12]  Javier Toraño,et al.  Conventional and numerical models of blasting gas behaviour in auxiliary ventilation of mining headings , 2013 .

[13]  Aleksandar D Bugarski,et al.  Aerosols Emitted in Underground Mine Air by Diesel Engine Fueled with Biodiesel , 2010, Journal of the Air & Waste Management Association.

[14]  Kent C Johnson,et al.  Reduction of particulate matter emissions from diesel backup generators equipped with four different exhaust aftertreatment devices. , 2007, Environmental science & technology.

[15]  Emanuele Cauda,et al.  Effects of diesel exhaust aftertreatment devices on concentrations and size distribution of aerosols in underground mine air. , 2009, Environmental science & technology.

[16]  Andrew B Cecala,et al.  Reducing Enclosed Cab Drill Operator's Respirable Dust Exposure with Effective Filtration and Pressurization Techniques , 2005, Journal of occupational and environmental hygiene.

[17]  L. Yuan,et al.  Computational Fluid Dynamics Modeling Of Spontaneous Heating In Longwall Gob Areas , 2022 .

[18]  Saad A. Ragab,et al.  Development of a remote analysis method for underground ventilation systems using tracer gas and CFD in a simplified laboratory apparatus , 2013 .