Research Paper
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For this research, a coal mine was examined that has the deepest coal mining activities in the country,in order to improve hot and humid work environment. The Ventsim 3D program was used for a simulation ofventilation network and temperature analysis. Ventilation network modeling was set up that reflected naturalventilation. Natural ventilation pressure formed between No.1 shaft and No.2 shaft, and it was calculated to beapproximately 245 Pa. Based on the completed ventilation modeling, a simulation of increased ventilation wasdone, assuming the extension of shaft and the installation of mine doors. The simulation result showed an increasedair inflow over 50% in deep mines. However, it did not affect the temperature environment of the deeper partof the mine. To improve hot and humid work environment, temperature simulation was carried out, reflectingthe operation of the air cooler. According to the simulation result, it was deemed that three additional air coolersneed to be installed to create the work environment with the WBGT between 25.0℃ and 27.9℃. And the lengthof mine duct should not exceed the maximum 800 m.
본 연구에서는 현재 국내에서 가장 깊은 심도에서 채탄이 이루어지고 있는 A광업소를 대상으로 작업장의 온도환경을 개선하기 위하여 환기모델을 만들고 온도시뮬레이션을 실시하였다. 모델의 정확성을 높이기 위하여 광업소의 1수직갱과 2수직갱 사이에 발생하는 자연환기력을 약 245 Pa로 계산하여 모델에 적용하였고, 완성된 모델을 바탕으로 주요작업장 유입공기량 증대를 위하여 풍문 및 수직갱의 연장 시뮬레이션을 수행하였다.시뮬레이션 결과는 주요 심부작업장의 유입공기량을 50%이상 증대 시킬 수 있음을 보여주었다. 하지만 고온･다습한 심부 작업장의 온도환경에는 큰 영향이 없음을 확인하고, 현재 광업소에 운영 중인 공기냉각기를 바탕으로추가운영 및 냉각기의 효과적인 운영방안에 대한 시뮬레이션을 연속해서 수행하였다. 온도환경 기준을 WBGT25.0～27.9℃로 설정하여 기준범위내의 온도환경을 조성하기 위해서는 3대의 공기냉각기가 추가 설치되어야하며, 풍관에서의 열손실을 반영하여 풍관 길이를 최대 800 m 이내로 운영해야 함을 확인하였다.
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- Publisher :The Korean Society of Mineral and Energy Resources Engineers
- Publisher(Ko) :한국자원공학회
- Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
- Journal Title(Ko) :한국자원공학회지
- Volume : 52
- No :1
- Pages :9-19
- DOI :https://doi.org/10.12972/ksmer.2015.52.1.009
Journal of the Korean Society of Mineral and Energy Resources Engineers
