Operation analysis and improvement of a logging system using high-performance forestry machines in a mature forest
2008
Ishikawa, T.(Mie Univ., Tsu (Japan)) | Tsujibata, T. | Matsushita, A. | Itaya, A. | Hamamoto, K. | Tsujibata, T.
A time study and analysis of logging operations were conducted. The logging system consisted essentially of the construction of yarding roads of 3.0-3.5 meters wide, felling by chain saws, limbing and bucking using a processor who base machine was an excavator with a bucket capacity of 0.45 cubic m, and yarding using a forwarder with a maximum capacity of 5 tons. When this system was applied to a mature forest of 2 to 5 ha in area, it raised labor productivity and reduced felling and transporting costs by enabling yarding roads to be built at a sufficiently high density to eliminate the need for prehauling. Analyses of each process in this system showed that the efficiency of logging operations was improved by increasing the crawling capacity of forwarders, installing tracks on yarding roads, and shortening the time required for loading and unloading by the forwarder, slash disposal during limbing, and bucking by the processor.
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