Size Analysis of Airborne and Settled Dust in Underground Limestone Mine

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2012 Vol.49, Issue 4 Preview Page Next Page

Research Paper

Size Analysis of Airborne and Settled Dust in Underground Limestone Mine 지하 석회석 광산내 부유분진 및 침착분진 입도분석: 김두영·이승호·정규홍·이창우
Doo Young Kim, Seung Ho Lee, Kyu Hong Jeong and Chang Woo Lee

31 August 2012. pp. 471-478

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Abstract

This paper aims at analyzing the concentration and size distribution of airborne dust as well as the re-entrainment possibility of settled dust in order to suggest efficient engineering measures for improving the work place environment at limestone mines with large cross-section. Concentrations of diesel smoke are also estimated by visual observation and size distribution. The airborne dust concentration during drilling and loading operations are within the permissible limit by Mine Health and Safety Act, while the estimated diesel smoke level is in the range of 0.380 and 1.620 mg/m3 and considerably exceeds the US MSHA TLV of 0.160 mg/m3. Within the 200 m downstream of drilling and loading operations, differences of the size distribution of settled dust on the wall and bottom are not significant. However, settled dust generated by blasting shows relatively finer size and has higher possibility of re-entrainment.

Keywords

Limestone mine

Airborne dust

Settled dust

Re-entrainment

Size distribution

대단면 석회석 광산내 디젤장비 사용에 따른 작업환경 분석 및 효율적 분진 제어방안의 마련을 위해 작업공간내 부유분진 농도 및 입도분석, 침착분진 재부유 가능성을 분석하고 육안관찰과 입도분포로부터 디젤 매연의 농도를 추정하였다. 천공 및 적재작업 공간에서의 부유분진 농도는 광산보안법에서 제시한 허용농도를 초과하지는 않으나 추정 매연농도는 0.380~1.620 mg/m3 정도로 미국(MSHA)의 기준 0.160 mg/m3 을 심각하게 초과한다. 작업장 부근 200 m 범위내의 적재 및 천공작업에 의하여 발생한 분진의 침착분진 입도분포는 차이가 현저하지 않으나 발파작업에 의한 분진입도가 상대적으로 작으며 재부유 가능 비율 또한 상대적으로 크게 나타난다.

키워드

석회석 광산

부유분진

침착분진

재부유

입도분포

References

이창우, 1988, “부유탄진의 입도분석,” 한국지구시스템공학회지, 제25권 2호, pp. 109-117.
지식경제부, 2011, “광산보안법 시행규칙,” 제2장, 1절, 제 49조.
지식경제부, 2011, “광산보안법 시행규칙,” 제2장, 1절, 제 50조.
Chekan, G.J., Colinet, J.F., Kissell, F.N.. Rider, J.P., Vinson, R.P. and Volkwein, J.C., 2006, “Performance of a Light-scattering Dust Monitor in Underground Mines,” Transactions of Society for Mining, Metallurgy and Exploration, No. 320, pp. 21-24.
Grau, R.H. Ⅲ and Krog, R.B., 2009, Ventilating large opening mines, NIOSH, Pittsburgh Research Laboratory, Pittsburgh, PA, pp. 1-7.
McGinn, S., 2007, “Controlling Diesel Emissions in Underground Mining within an Evolving Regulatory Structure in Canada and the United Stated of America,” Queensland Mining Industry Health and Safety Conference.
Shankar, S. and Ramani, R.V., 1991, “Re-entrainment of Fine Particulates in Mine Airways,” Proceedings of the 5th US Mine Ventilation Symposium, Y.J. Wang, Ed., pp. 253-262.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society for Geosystem Engineering
Journal Title(Ko) :한국지구시스템공학회지
Volume : 49
No :4
Pages :471-478

[1] 이창우, 1988, “부유탄진의 입도분석,” 한국지구시스템공학회지, 제25권 2호, pp. 109-117.

[2] 지식경제부, 2011, “광산보안법 시행규칙,” 제2장, 1절, 제 49조.

[3] 지식경제부, 2011, “광산보안법 시행규칙,” 제2장, 1절, 제 50조.

[4] Chekan, G.J., Colinet, J.F., Kissell, F.N.. Rider, J.P., Vinson, R.P. and Volkwein, J.C., 2006, “Performance of a Light-scattering Dust Monitor in Underground Mines,” Transactions of Society for Mining, Metallurgy and Exploration, No. 320, pp. 21-24.

[5] Grau, R.H. Ⅲ and Krog, R.B., 2009, Ventilating large opening mines, NIOSH, Pittsburgh Research Laboratory, Pittsburgh, PA, pp. 1-7.

[6] McGinn, S., 2007, “Controlling Diesel Emissions in Underground Mining within an Evolving Regulatory Structure in Canada and the United Stated of America,” Queensland Mining Industry Health and Safety Conference.

[7] Shankar, S. and Ramani, R.V., 1991, “Re-entrainment of Fine Particulates in Mine Airways,” Proceedings of the 5th US Mine Ventilation Symposium, Y.J. Wang, Ed., pp. 253-262.

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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