Email this article PERFORMANCES OF TWO PROTOTYPES OF LOG EXTRACTION TECHNIQUES USING THE SKYLINE SYSTEM
DOI: 10.20886/ijfr.2017.4.1.1-14Abstract
Timber extraction from felling area to road side is not an easy job. This activity facing a number of difficulties particularly due to geo-biophysical conditions, such as steep terrain, up and/or down-hill, valley or river-to be crossed, slippery road and also the size of the timber and low accessibility. To anticipate those obstacles two engineering designs of the skyline system had been tried, the so called Expo-2000 Generation-1, using gasoline engine of 6 HP (G-1), and Expo-2000 Generation-3 using diesel
engine of 12 HP (G-3). G-1 model has been tested in Cimeong and Rancaparang in 2011. G-3 model has been examined in Cibatu Canjur and Cibaliung Banten in 2013. This paper evaluates the modification of skyline system for steep terrain and to compare the performance between two modified skyline systems, in term of productivity and cost. The data collected included working time, log volume extracted, log extraction distance and fuel used. Data were analyzed to get the average productivity and cost of operation. Result show that prototype G-3 with logs in horizontal position at a distance of 130-430 m, can extract logs averaging 1.72 m3/hr, at a cost of about Rp 80,346/m3, while prototype G-1 and logs in vertical position at a distance of about 50-320 m, could only extract logs averaging ± 0.85 m3/ hr at a cost of about Rp 156,351/m3. It suggests that prototype Expo-2000 G-3 is more effective for log extraction logs in steep terrain.
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Acuna, M., Skinnell, J., Mitchell, R., & Evanson, T. (2010). Bunching stems in steep slopes for efficient yarder extraction. Retrieved from https://www.formec.org/images/proceedings/2011/formec2011_slides_acuna_etal_a.pdf on July 14, 2016.
Basari, Z. (2002). Produktivitas pengeluaran dolok kayu tusam dengan sistem kabel layang Iwafuji 115. Buletin Penelitian Hasi Hutan, 1(20), 20–34.
Biller, C. J., & Johnson, D. D. (1988). Radio controlled downhill skyline logging carriage and system. Retrieved from http://agris.fao.org/agris-search/search.do?recordID=US8872592
Direktorat Jenderal Pengusahaan Hutan. (1993). Petunjuk cara pengukuran dan penetapan isi kayu bulat rimba Indonesia. Jakarta: Direktorat Jendral Pengusahaan Hutan.
Dykstra, D. P., & Heinrich, R. (1996). FAO model code of forest harvesting practice. Rome: Food and Agriculture Organization.
Endom, W. (2013). Produktivitas dan biaya alat hasil rekayasa dalam pengeluaran kayu jati di daerah curam. Jurnal Penelitian Hasil Hutan, 31(1), 63–74. doi:10.20886/jphh.2013.31.1.63-74
Endom, W. (2014). Uji coba mesin kabel layang Expo-2000 Generasi-II dengan konstruksi dua gigi eksentrik terpisah untuk ekstraksi kayu. Jurnal Penelitian Hasil Hutan, 32(1), 1–11. dx:10.20886/jphh.2014.32.1.1-11
Endom, W., Soenarno, & Idris, M. M. (2014). Prototipe Expo-2000 sebagai tantangan dan peluang masa depan. (Bahan Naskah Forpro). Pusat Penelitian dan Pengembangan Hasil hutan, Bogor.
Escobar, F. V., & García, G. A. R. (2013). Small and simple technology cable system for logging. Retrieved from https://www.formec.org/images/proceedings/2014/a47.pdf on July 14, 2016.
Greulich, F. R., Hanley, D. P., McNeel, J. F., & Baumgartner, D. (1996). A primer for timber harvesting. Pullman, Washington: Washington State University. Retrieved from http://faculty.washington.edu/greulich/Documents/eb1316.pdf on July 14, 2016,
Lloyd, A. H. (2007). Extraction of timber by Skyline Crane. Retrieved from http://www.fao.org/docrep/x5369e/x5369e05.htm on July 4, 2007
Mujetahid, A. (2010). Analisis biaya penebangan pada hutan jati rakyat di Kabupaten Bone. Jurnal Perennial, 6(2), 108–115.
Mulyadi, A. (2002). Akuntansi manajemen. Bandung: UPI.
Olund, D. (2001). The future cable logging. In The International Mountain Logging and 11th Pacific Northwest Skyline Symposium. Retrieved from http://depts.washington.edu/sky2001/proceedings/papers/Olund.pdf
Pinard, M. A., Putz, F. E., Tay, J., & Sullivan, T. . (1995). Creating timber harvest guidelines for a reduced-impact logging project in Malaysia. Journal of Forestry, 93(10), 41–45. Retrieved from http://www.cifor.org/nc/online-library/browse/view-publication/publication/230.html
Pyles, M. R., Womack, K. C., & Laursen, H. I. (1994). Dynamic characteristics of a small skyline logging system with a guyed tailspar. International Journal of Forest Engineering, 6(1), 35–49.
Safitri, D. E. (2000). Pengaruh volume, jarak sarad dan kelerengan jalan sarad terhadap prestasi kerja dan biaya penyaradan dengan pikulan. (Bachelor Thesis). Institut Pertanian Bogor, Bogor.
Senturk, N., Ozturk, T., & Demir, M. (2007). Productivity and costs in the course of timber transportation with the Koller K300 cable system in Turkey. Building and Environment, 42(5), 2107–2113. doi:10.1016/j.buildenv.2006.03.005
Spinelli, R., Maganotti, N., & Visser, R. (2015). Productivity models for cable yarding in Alpine forests. European Journal of Forest Engineering, 1(1), 9–14.
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