Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Productivity, Cost, and Optimal Forest Road Network Density of Tree-length Yarding Operations with Tower Yarder

타워야더를 이용한 전간집재작업의 생산성 및 비용과 적정 노망밀도 분석

  • Kim, Min-Kyu (Forest Practice Research Center, National Institute of Forest Science) ;
  • Baek, Seung-An (Forest Practice Research Center, National Institute of Forest Science) ;
  • Cho, Koo-Hyun (Forest Practice Research Center, National Institute of Forest Science) ;
  • Jung, Do-Hyun (Forest Practice Research Center, National Institute of Forest Science)
  • 김민규 (국립산림과학원 산림생산기술연구소) ;
  • 백승안 (국립산림과학원 산림생산기술연구소) ;
  • 조구현 (국립산림과학원 산림생산기술연구소) ;
  • 정도현 (국립산림과학원 산림생산기술연구소)
  • Received : 2017.05.02
  • Accepted : 2017.06.26
  • Published : 2017.09.30
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Abstract

The productivity, cost, and optimal forest road network density for tree-length yarding with K301-4 and HAM300 tower yarders were analyzed. The results showed that productivity decreased as the yarding distance increased. The productivity of the K301-4 was greater than that of the HAM300 as the maximum yarding distance was longer than 34 m. This difference increased as the load volume increased. As the K301-4 yarder had a higher purchase price and it took more time to set up compared to the HAM300, the HAM300 was cost effective. Therefore, in oder to introduce tower yarders to reduce operational cost, it is effective to increase the load volume during operations and to utilize the road network repeatedly for a long period.

본 연구는 우리나라에 도입된 오스트리아 Koller사의 K301-4와 우리나라에서 개발된 HAM300 타워야더의 전간집재작업에 대해서 작업시간을 측정하고, 작업생산성, 작업비용, 최적노망밀도에 대한 분석을 실시하였다. 최대집재거리가 길어질수록 생산성은 감소되지만 K301-4와 HAM300을 비교하였을 때, 최대집재거리가 34 m 보다 길어질수록 K301-4의 생산성이 높았으며, 1회당 집재재적이 커질수록 양측의 차이는 커지는 것을 확인하였다. K301-4는 HAM300에 비해서 기계가격이 높고, 타워야더의 설치 및 철거 소요시간이 더 커지므로 HAM300이 작업비용 측면에서 효율적으로 나타났다. 타워야더를 도입하여 작업비용을 절감하기 위해서는 장기간에 걸쳐 임내노망을 반복적으로 사용하고 1회당 집재재적을 늘리는 것이 유리하다고 판단된다.

Keywords

References

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