ACHMAD, FAIZAL NUR (2016) RANCANGAN BUKAAN TAMBANG (PIT) DAN PUSHBACK TAILING EMAS PT. TANSRI MADJID ENERGI DI KECAMATAN LEBONG UTARA KABUPATEN LEBONG PROVINSI BENGKULU. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
RINGKASAN
Pit Lebong Donok Tailing PT.Tansri Madjid Energi(PT. TME) terletak di
Desa Lebong Tambang, Kecamatan Lebong Utara, Kabupaten Lebong, Bengkulu.
Aktivitas penambangan dilakukan oleh PT.TME dengan sistem tambang terbuka.
Target produksi tailing emas pada Pit Lebok Donok Tailing adalah 13.500
ton/bulan. PT. Tansri Madjid Energi belum mempunyai rancangan pushback
penambangan, sehingga perlu dibuat rancangan kemajuan tambang agar
memudahkan dalam pelaksanaan kegiatan penambangan, menerapkan sistem
penambangan yang baik dan benar dengan memperhatikan aspek teknis kegiatan
penambangan sehingga memberikan keuntungan yang optimal bagi perusahaan
dengan tercapainya target produksi yang sudah direncanakan.
Rancangan penambangan merupakan suatu tahap penting dalam operasi
penambangan. Beberapa bagian yang perlu diperhatikan dalam membuat suatu
rancangan tambang terbuka adalah target produksi dan umur tambang,
perancangan geometri penambangan, jadwal produksi, rancangan push back
penambangan, kebutuhan alat bantu, alat gali muat, dan alat angkut, rancangan
jalan angkut tambang, dan perencanaan timbunan.
Berdasarkan permodelan endapan tailing emas, diketahui cadangan tailing
emas tertambang di Pit Lebong Donok tailing adalah sebesar 192.460 ton dengan
pengupasan material overburden sebesar 221.992 BCM dengan nilai overall
stripping ratio adalah 1,15:1. Target produksi penambangan tailing emas adalah
13.500 ton per bulan, sehingga dalam satu triwulan ditargetkan 40.500 ton.
Hasil rancangan push back penambangan pada triwulan pertama, jumlah
tailing emas tertambang 26.716 ton, volume overburden yang dikupas 27.520
BCM. Volume overburden yang dibongkar pada triwulan kedua adalah 46.947
BCM dengan tailing emas tertambang berjumlah 45.553 ton. Tonase tailing emas
tertambang pada triwulan ketiga adalah 46.144 ton dan volume overburden yang
dikupas 39.668 Volume overburden yang dibongkar pada triwulan keempat
sebanyak 55.114 BCM dan didapatkan tailing emas tertambang 46.007 ton.
Tonase tailing emas yang tertambang pada triwulan kelima adalah 27.970 ton dan
overburden yang dibongkar adalah 52.271 BCM
Hasil rancangan pushback penambangan, pada triwulan pertama
menghasilksan nisbah pengupasan 1,03:1, triwulan kedua menghasilkan nisbah
pengupasan 1,03:1, triwulan ketiga menghasilkan nisbah pengupasan 0,86 , dan
triwulan keempat menghasilkan nisbah pengupasan 1,20:1, triwulan kelima
menghasilkan nisbah pengupasan 1.86. Nisbah pengupasan keseluruhan dari
rancangan push back penambangan yaitu 1,15:1.
ABSTRACT
Lebong Donok Tailing Pit PT. Tansri Madjid Energi (PT. TME) is located
in the Village of Lebong Tambang, Subdistrict Lebong Utara, Lebong District,
Bengkulu. The mine working was done by PT. TME with open mining system.
The product targets of gold tailings in Pit Lebok Donok Tailing are 13.500
tons/month. PT Tansri do not have pushback mining plan yet, so it is needed to
make mining advance plan to make the mine working easier and to apply the right
and appropriate mining system consider to technical aspect. In the purpose to get
the maximum profit for the company when the production targets plan were
attained.
Mining plan is the one of important step in mine workings. Some parts that
are needed to be concerned in the way to make open mining plan are the
production targets, geometrical mining plan, production scheduling, pushback,
mine road plan, and the mine pile plan.
Considered to gold tailings sediment type, known that the mined gold
tailings reserve in Pit Lebong Dolok Tailing are 192.460 tons with the peeled
overburden materials are 221.992 BCM with the overall ratio is 1,15:1. The
production targets of the gold tailings mining are 13.500 tons per month, so the
targets in quarterly are 40.500 tons.
The results of the pushback mining plan in the first quarterly of the mined
gold tailings are 26.716 tons and the volumes overburden are 27.520 BCM. The
volume of overburden in the second quarterly are 46.947 BCM with the mined
gold tailings are 45.553 tons. The tonnages of the mined gold tailings in the third
quarterly are 46.144 tons and the volumes of overburden are 39.668 BCM. The
volumes of the overburden in the forth quarterly are 55.114 BCM and the mined
gold tailings are 46.007 tons. The tonnages of the mined gold tailings in the fifth
quarterly are 27.970 tons and the overburdens are 52.271 BCM.
The pushback mining plan in the first quarterly produced striping ratio
1,03:1; the second quarterly produced striping ratio 1,03:1; the third quarterly
produced striping ratio 0,86; the forth quarterly produced striping ratio 1,20:1; and
the fifth quarterly produced striping ratio 1,86. The overall striping ratio of
pushback mining plan is 1,15:1.
| Item Type: | Thesis (Other) |
|---|---|
| Subjek: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Basir Umaryadi |
| Date Deposited: | 16 May 2016 07:59 |
| Last Modified: | 16 May 2016 07:59 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/1018 |
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