HENDRA SINAGA, SAMUEL (2015) KEBUTUHAN ALAT GALI-MUAT DAN ALAT ANGKUT PADA KEGIATAN PENGUPASAN OVERBURDEN DI TAMBANG BATUBARA PT. BORNEO BRIKOKS INDUSTRI BERAU, KALIMANTAN TIMUR. Other thesis, UPN ''VETERAN'' YOGYAKARTA.
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Abstract
PT. Borneo Brikoks Industri (BBI) merupakan suatu badan usaha swasta yang bergerak di bidang pertambangan berdasarkan IUP Operasi Produksi sesuai dengan keputusan Bupati Berau 545/010/IUP-E/D.PE/2010 dengan luas 80 Ha. Secara administrasi PT.BBI berlokasi di Kecamatan Teluk Bayur, Kabupaten Berau, Provinsi Kalimantan Timur dan secara astranomis terletak antara 0208’04,6” – 0208’05” LU dan 11724’25” – 11724’35” BT. Lokasi penelitian berada di Pit A dan B dimana jumlah overburden yang akan dikupas sebesar 3,6 juta bcm dengan lama waktu pekerjaan selama satu tahun. Pengupasan overburden akan dikerjakan dengan menggunakan kombinasi antara alat mekanis yaitu hydraulic excavator backhoe Komatsu PC800SE-8 berkapasitas bucket 4,5 m3 sebagai alat gali-muat dan riggid dump truck Komatsu HD325-7 berkapasitas bak 24 m3 sebagai alat angkut. Penelitian ini dibatasi pada penentuan jumlah kebutuhan alat gali-muat dan alat angkut berdasarkan kebutuhan target produksi serta memberikan rekomendasi teknis jumlah alat angkut yang sesuai dengan alat gali-muat berdasarkan faktor keserasian dan faktor kerja. Dari hasil perhitungan diperoleh jumlah kebutuhan alat mekanis yang perlu disediakan untuk memenuhi target pengupasan overburden per hari adalah 2 unit backhoe dan 10 unit dump truck. Kapasitas produksi 2 alat gali-muat tersebut adalah 16.486,50 bcm/hari sudah memenuhi target produksi yang ditetapkan yaitu 12.635,91 bcm/hari. Kapasitas produksi 10 unit dump truck adalah sebesar 12.898,98 bcm/hari juga dapat memenuhi target produksi. Faktor keserasian dari kombinasi alat mekanis tersebut adalah 0,74 dengan faktor kerja backhoe adalah 74,14% dan faktor kerja dump truck adalah 100%. Waktu tunggu backhoe untuk memuat overburden ke setiap dump truck yaitu 21,48 detik. Berdasarkan faktor kehilangan yang ditetapkan perusahaan adalah 10% atau sama dengan 13.899,50 bcm/hari sehingga jumlah 10 dump truck masih belum cukup. Kapasitas produksi 12 dump truck yaitu sebesar 15.478,77 bcm/hari sudah memenuhi target produksi. Faktor keserasian 0,89, faktor kerja backhoe 99,97% dan faktor kerja dump truck 100%. Waktu tunggu backhoe untuk memuat overburden ke setiap dump truck yaitu 45 detik. Dari perhitungan kebutuhan dump truck berdasarkan faktor keserasian satu diperoleh jumlah dump truck yang dibutuhkan untuk melayani backhoe adalah 14 unit, dimana faktor keserasian yang diperoleh adalah 1,04 dengan faktor kerja backhoe 100% dan faktor kerja dump truck adalah 96,35%. Waktu tunggu dump truck untuk dimuat oleh backhoe adalah 16,5 detik. Berdasarkan faktor keserasian, faktor kerja dan faktor kehilangan maka digunakan 12 dump truck. PT. Borneo Brikoks Industri is a company that is engaged in mining activity based on “IUP Operasi Produksi” given by Bupati Berau 545/010/IUP-E/D.PE/2010 with an area of 80 Ha. On paper, PT. BBI is located on “Kecamatan Teluk Bayur, Kabupaten Berau, East Kalimantan Province” and astronomically is located between 0208’04,6” – 0208’05” LU and 11724’25” – 11724’35” BT. Analysis locations are located at Pit A and B where the amount of overburden that will be stripped totals to 3,6 million bcm with a work of duration of around one year. Overburden stripping will be done with using a combination of mechanical equipment such as hydraulic excavator backhoe Komatsu PC800SE-8 with a bucket capacity of 4,5 m3 as a dig-load equipment and a rigid dump truck Komatsu HD325-7 with a vessel capacity of 24m3 as a material hauler. This study is confine to the analysis of the total number of heavy dig-load and hauling equipment needed based on the already existing production target and also giving recommendations technical-wise on the amount of equipment needed based on the matching factor and operating factor. Based on the mathematics and number that were required, the number of mechanical equipment’s needed to fulfill the overburden stripping target per day are 2 unit of backhoe and 10 dump truck units. The production capacity of 2 dig-load equipments is 16.486,50 bcm/day which has already achieved the controoled production target. Which is 12.635,91 bcm/day. Production capacity 10 dump truck units is around 12.898,98 bcm/day which has also achieved the production target. The matching factor from the combination of these 2 machinery is around 0,74 given the fact that the operating factor of a backhoe is 74,14% and the operating factor of a dump truck is 100%. The waiting time of a backhoe to load the overburden into each dump truck is around 21,48 seconds. Based on the agreed loss factor frim the company is 10% or equals to 13.899,50 bcm/day, then the amount of 10 dump truck still not enough. The production capacity 12 dump trucks is 15.478,77 bcm/day which has fulfilled the agreed production target. The matching factor target of 0,89, operating factor of a backhoe which is 99,97% and the operating factor of a dump truck which is 100%. The waiting duration of a backhoe to load the overburden to each dump truck is 45 seconds. Looking at the mathematical number the amount of dump trucks needed passed on the matching factor of 1 and to serve the backhoe is 14 units, where the matching factor gained is 1,04 with a operating factor of 100% for the backhoe and the dump truck at 96,35%. The waiting time for a dump truck to be loaded by a backhoe is around 16,5 seconds. Due to the matching factor, operating factor nd loss factor, then 12 dump trucks are used for optimum production.
| Item Type: | Thesis (Other) |
|---|---|
| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Erny Azyanti |
| Date Deposited: | 07 Jun 2016 04:30 |
| Last Modified: | 07 Jun 2016 04:30 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/3134 |
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