J. For. Sci., 2011, 57(12):565-573 | DOI: 10.17221/59/2011-JFS

Economics of a hydraulic hammer for forest road construction in a mountainous area

A. Parsakhoo1, S. A. Hosseini1, M. R. Ghaffariyan2
1 Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
2 Research Fellow, Harvesting and Operations, CRC Forestry, University of Tasmania, Australia

This research deals with productivity and cost of rock disintegration and side casting of materials with the use of a hydraulic hammer mounted on a PC 220 Komatsu crawler excavator, which is used on rocky slopes of Hyrcanian forests of Iran. A continuing time study was applied during the road construction. To estimate the volume of rock disintegration, the average end area equation was used. The increasing cut-slope height decreased productivity. The productivity of hydraulic hammer averaged at 5.5 m3.h-1 for the mean work volume of 5.07 m3.m-1. The unit cost of the system was 7.7 €.m-3. From the economic point of view a new machine with multipurpose system could be recommended for forest road construction operations in rocky areas.

Keywords: hydraulic hammer; rock disintegration; cut slope; productivity; costs

Published: December 31, 2011  Show citation

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Parsakhoo A, Hosseini SA, Ghaffariyan MR. Economics of a hydraulic hammer for forest road construction in a mountainous area. J. For. Sci. 2011;57(12):565-573. doi: 10.17221/59/2011-JFS.
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