Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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A Monitoring Strategy on Dispersion of Particulate Matter emitted from Domestic Limestone Open Pit Mines

국내 노천 석회석 광산먼지 확산 모니터링 방안

  • Yoon, Jinho (Department of Environmental Science, Keimyung University) ;
  • Lee, Sang-hun (Department of Environmental Science, Keimyung University) ;
  • Seo, Eui Young (Institute of Mine Reclamation Research, Mine Reclamation Corporation) ;
  • Baek, Seunghan (Institute of Mine Reclamation Research, Mine Reclamation Corporation)
  • Received : 2021.08.18
  • Accepted : 2021.08.27
  • Published : 2021.08.31
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Abstract

This study proposed a strategy with literature review on effective monitoring of dispersion of the particulate matters (PM) emitted from domestic open pit lime mines. The mines generally produced a large amount of PM through the mine processes such as crushing and transportation of raw or crushed ores. The PM emission from mine facilities or transportation can be assessed using empirical equations which was prepared through the experimental tests to produce PM from ores. For effective monitoring of mine PM dispersion, this study showed a preliminary application of the monitoring network with multiple low-cost sensors around a main PM emission source for each mine site. Therefore, two domestic limestone mine sites were selected for this study, and install the monitoring network with low-cost PM sensors and LTE (Long-term evolution) data communication. Then, preliminary resultant PM data plotted according to monitoring duration showed typical PM dispersion patterns. The quantification of the PM dispersion patterns should be roughly prepared by a PM size-dependent dispersion modeling.

본 연구에서는 국내 석회석 노천 광산시설이나 현장에서 배출되는 광산 미세먼지의 특징과 이를 효과적으로 모니터링 할 수 있는 방안에 대해 관련 문헌 검토 및 전략을 제시하였다. 광산에서는 채굴된 광석의 파쇄와 운송 등의 공정에서 많은 양의 광산 먼지들이 발생한다. 광석에서 인위적으로 광산먼지를 생성시키는 실험를 통해 제시된 배출계수 및 관련 경험식으로 광산 시설 또는 운송 과정에서의 PM 배출량을 추정할 수 있다. 광산 PM 분산의 효과적인 모니터링을 위해 본 연구는 광산 현장의 주요 PM 배출원 주변에 여러 개의 저가 센서를 갖춘 모니터링 네트워크를 적용하였다. 따라서 본 연구에서는 시범적으로 국내 2곳의 석회석 광산 현장을 선정하여 저가의 PM 센서와 LTE(Long-Term Evolution) 데이터 통신을 통한 모니터링 네트워크를 설치하였다. 모니터링 예비 운전 결과 모니터링 기간에 따 PM 데이터는 통상적인 PM 분산 패턴을 보여주었다. 먼지 입도를 감안한 확산모델링을 PM 분산 패턴을 대략적으로 정량화할 수 있다. 또한 먼지 확산 추정을 위해서는 현장의 기상 및 지형 조건 이외에도 먼지 입도에 따른 거동을 반영한 확산 모델식을 이용하여야 한다.

Keywords

Acknowledgement

본 연구는 한국광해관리공단의 2021년도 광해방지기술개발사업(먼지날림방지분야, 과제명: 미세먼지 저감을 위한 광산환경 먼지날림 전주기 모니터링 시스템 개발)의 지원으로 수행되었다.

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