JAYA, KRISNA (2014) KAJIAN TEKNIS KERJA ALAT MUAT DAN ALAT ANGKUT UNTUK PENGUPASAN TANAH PENUTUP PADA BULAN SEPTEMBER 2013 DI SITE SEKAYAN PT. PESONA KHATULISTIWA NUSANTARA, KECAMATAN TANJUNG SELOR, KABUPATEN BULUNGAN KALIMANTAN UTARA. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
PT. Pesona Khatulistiwa Nusantara merupakan perusahaan yang bergerak dalam bidang pertambangan batubara. Lokasi daerah rencana penambangan batubara terletak di Kecamatan Tanjung Selor, Kabupaten Bulungan, Kalimantan Utara. Tujuan penelitian yaitu membandingkan antara target produksi dengan keadaan aktual dari alat gali muat dan alat angkut yang digunakan di lokasi penambangan, mengetahui hambatan-hambatan yang menjadi penyebab berkurangnya waktu kerja efektif, dan melakukan upaya peningkatan produksi dengan merekomendasikan agar meminimalkan hambatan, serta penambahan jumlah pengisian material ke bak truk agar dapat meningkatkan produksi. Permasalahan yang terjadi adalah tidak tercapainya target produksi pada bulan September 2013 di site Sekayan pit Selatan sebesar 220.254bcm/bulan, hal ini disebabkan curah hujan dan waktu untuk slippery yang lama, sehingga efisiensi kerja alat tidak maksimal dan menghambat produksi. Kecepatan rata-rata alat angkut juga ada yang belum maksimal dikarenakan kondisi dan material jalan tambang yang mudah rusak ketika dilalui alat berat, serta masih banyak ditemukan jumlah pengisian material ke bak truk yang belum maksimal yang menyebabkan masih ada ruang kosong di bak truk yang sebenarnya masih bisa diisi material. Hambatan yang paling besar yang sering dihadapi perusahaan yaitu curah hujan yang tinggi yang mengakibatkan slippery pada jalan tambang. Maka perlu perawatan rutin dengan menggunakan alat mekanis seperti bulldozer dan motor grader. Selain itu, lebar jalan angkut pada keadaan jalan lurus harus diperlebar dari 13meter menjadi 16meter. Kemampuan produksi alat mekanis meningkat setelah dilakukan peningkatan waktu edar, peningkatan waktu kerja efektif, dan penambahan jumlah pengisian material ke bak truk. Maka, kemampuan produksi alat gali muat dan alat angkut meningkat dari 165.976,95bcm/bulan menjadi 257.897,99bcm/bulan dan target produksi sebesar 220.254bcm/bulan tercapai. PT. Pesona Khatulistiwa Nusantara is a company engaged in coal mining areas. Location of coal mining plan area is located in the Subdistrict of Tanjung Selor, Bulungan Regency, North Borneo. The purpose of the research is to compare between the actual state of the production transport tools and load used in mining, knowing the constraints that become the cause of reduced working time effectively, and make the effort increased production by recommending to minimise drag, as well as the addition of a number of charging material to the tailgate in order to increase production. Problems occurred is not the achievement of production in September 2013 at the site sekayan of the pit south 220.254 bcm/month, this is due to rainfall and time for a long, slippery so that the tool does not work at maximum efficiency and impede production. The average speed of transport tools also exist that have not been fullest due to the condition of the material and the way mine are easily damaged when traversed heavy equipment, as well as many found the amount of filling material into the tailgate that haven't been fullest cause there are still empty spaces in the tailgate that can actually still stocked material. The most substantial barriers often encountered companies namely high rainfall which resulted in the mine on the road slippery. Then need regular treatment with the use of mechanical equipment such as bulldozers and motor grader. In addition, the width of the road transport on road conditions straight must be extended from 13meter to 16meter. A mechanical device increased's production capacity after increase the cycle time, having performed an increase in working time is effective, and the number of charging to a tub of material the truck. So, production capacity instrument dug and unloading and conveyance increased from 165.976,95bcm/month be 257.897,99bcm/month and the production target of 220.254 bcm/month achieved.
| Item Type: | Thesis (Other) |
|---|---|
| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Suprapti |
| Date Deposited: | 19 May 2016 08:26 |
| Last Modified: | 19 May 2016 08:26 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/1740 |
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