한국산업융합학회 논문집 (Journal of the Korean Society of Industry Convergence)

한국산업융합학회 (The Korean Society of Industry Convergence)
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심박수를 이용한 임목수확작업의 작업강도 분석

Heart Rate Strain of Forest-workers in Timber Harvesting Operation

  • 백승안 (국립산림과학원 산림기술경영연구소) ;
  • 이은재 (국립산림과학원 산림기술경영연구소) ;
  • 남기훈 (창신대학교 소방방재공학과) ;
  • 조구현 (국립산림과학원 산림기술경영연구소)
  • Baek, Seung-An (Forest Technology and Management Research Center, National Institute of Forest Science) ;
  • Lee, Eun-Jai (Forest Technology and Management Research Center, National Institute of Forest Science) ;
  • Nam, Ki-Hun (Dept. of Fire and Disaster Prevention Engineering, Changshin University) ;
  • Cho, Koo-Hyun (Forest Technology and Management Research Center, National Institute of Forest Science)
  • 투고 : 2020.05.28
  • 심사 : 2020.06.26
  • 발행 : 2020.08.31
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초록

This study was conducted to analyze the physical strain with heart rate monitor in timber harvesting operations in order to reduce occupational accidents. The timber harvesting activities are manual cutting(felling, limbing and bucking) with a chainsaw and extraction by cable yarder. The study took place on Japanese larch stand. The average height was 26m and average diameter at breast height(DBH) was 3 7cm. The havest unit was gentle slope to steep slope. Results showed that the heart rate increases for chocking, felling, limbing and bucking were 94.0%, 87.9%, 84.8% and 56.4% respectively. The rate of Work Load Index was higher in the limbing(61.4%) activity than other activities chocking(55.2%), felling(54.1%) and bucking(32.1%). During 50% working heart rate test it was found that limbing(1.09), chocking(1.05) and felling(1.04) was exposed to high work intensity compared to bucking(0.83). The results showed that maximum acceptable work times(felling, chocking and limbing) were 2.30 hour, 1.85 hour and 1.60 hour respectively. To avoid occupational accidents, timber harvest workers may use a suitable working hour schedule to felling, chocking, limbing.

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참고문헌

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