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발전회를 이용한 광산환경 복원사례 연구

A Case Study of Mine Environmental Restoration using Coal Ash

신희영|김춘식|안지환|지상우|유종찬
한국자원리싸이클링학회|2017.04|자원리싸이클링 (Resources Recycling)|제26권 제2호|pp. 80-88|DOI https://doi.org/10.7844/kirr.2017.26.2.80

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참고문헌

키워드

MineCoal ash광산발전회발전회 재활용광산복원광해복구Recycling of coal ashMine restorationMine reclamation
주제분류자원공학

초록

전 세계적으로 매년 증가하는 발전회의 매립을 위한 부지는 현저히 부족한 실정이며, 이를 재활용 하는 방안에 관한 연구는 지금까지 활발히 진행 중이다. 또한, 휴·폐광산의 갱구, 폐석 더미, 지하공동에서 발생하는 다양한 광해는 심각한 인명피해 및 환경오염을 일으킨다. 따라서 본 연구에서는 국내 석탄, 금속, 석회석 광산에서 발생하는 AMD (Acid Mine Drainage), 지반침하 등의 광해방지에서 발전회의 활용 가능성에 대한 연구를 수행하였다. 발전회는 그 물리화학적인 특성에 따라 AMD 중화, 노천광산에서의차폐재, 지하광산의 채움재 및 토양 개량제로써 활용할 수 있으며, 미국, 호주, 일본, 캐나다 등의 국외에서는 관련 지침을 마련하여 현장 적용사례가 충분히 확보된 상태이다. 하지만 국내의 경우 현장 적용을 위한 몇몇 연구들은 수행돼 왔지만, 현재 발전회를사업장폐기물로 분류하고 있기 때문에 현장 적용사례가 미흡하며, 이와 관련된 연구도 부족한 실정이다. 따라서 국내에서도 국외의관련 선행 적용사례들을 참고하여 광해방지사업에서 발전회의 활용을 위한 구체적인 기준 및 관리체계가 필요할 것이다.

Abstract

Globally, there has been a lot of research related to recycling coal ash from power plant stations. This research is happening because there is a considerable shortage of sites for reclamation of increased coal ash every year. In addition, a variety of environmental pollutants have appeared because of mining activity. Abandoned coal mine, pits, and mine tailing piles caused pollutants to come to the surface resulting in serious damage for humans and the environment. Therefore in this study, we investigated whether or not coal ashes have the ability to prevent several environmental problems by mining in Korea and a manageable form recycling coal ashes. In overseas countries, there is a sufficient field of applicable cases where coal ash is used for neutralizing AMD (Acid Mine Drainage), covering of the waste materials, grouting, and soil amendments. However in Korea, since the coal ash is classified as a ‘waste’, there is an insufficient field applicable cases so far. Therefore it is necessary to establish a specific standard and management system for the utilization of coal ash based on the relevant precedent cases applied abroad in order to prevent environmental pollution caused by mining activity in Korea.

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