REPALA, BONY (2014) PENAKSIRAN CADANGAN BAHAN GALIAN BATUBARA DI PT. LEMATANG COAL LESTARI GUNUNG RAJA KECAMATAN RAMBANG DANGKU KABUPATEN MUARA ENIM SUMATERA SELATAN. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
Untuk memenuhi kebutuhan komoditi batubara sebagai power plant maka PT. Lematang Coal Lestari akan melakukan kegiatan penaksiran cadangan batubara, baik taksiran kuantitas (tonase) maupun taksiran kualitas di wilayah Gunung Raja, Kabupaten Muara Enim, Provinsi Sumatera Selatan. Data yang tersedia dari peta topografi dan hasil pemboran batubara yang diambil dari 23 lubang bor menunjukkan batubara di daerah penelitian memiliki ketebalan bervariasi dari 0,4 m – 17,69 m. Arah umum perlapisan Barat Laut – Tenggara dengan kemiringan yang bervariasi antara 3° - 10°. Ketebalan batubara maksimum pada titik bor GR-20 yaitu 17,69 meter dan ketebalan minimum terdapat pada titik bor GR-5 yaitu 0,4 meter. Adanya perbedaan ketebalan batubara yang ditaksirkan disebabkan oleh adanya proses pelapukan dan sedimentasi pada permukaan topografi yang berbeda-beda di tiap-tiap daerah diketahui bahwa kualitas batubara di daerah penelitian mengandung kalori berkisar 3.423 - 5.143 kcal/kg serta data analisa proksimat lainnya. Dengan kondisi lapangan yang merupakan perbukitan bergelombang maka dilakukanlah upaya penaksiran cadangan batubara dengan Metode Cross Section Standard berdasarkan Rule of Gradual Change dan Metode Cross Section Linier berdasarkan Rule of Nearest Point sebagai pembanding. Berdasarkan klasifikasi Amandemen 1-SNI-13-4726-1998, batubara pada daerah penelitian termasuk cadangan terbukti. Penaksiran cadangan batubara dilakukan dengan menggunakan Metode Cross Section Standard didapatkan tonase batubara sebesar 135.454.296 ton, sedangkan dengan Metode Cross Section Linier didapatkan tonase batubara sebesar 135.084.516 ton. Perbedaan hasil penaksiran cadangan dengan Metode Cross Section Standard dan Metode Cross Section Linier adalah sebesar 369.780 ton. Nilai Stripping Ratio Metode Cross Section Standard berdasarkan Rule of Gradual Change adalah 3,696 : 1 sedangkan nilai Stripping Ratio Metode Cross Section Linier berdasarkan Rule of Nearest Point adalah 3,704 : 1 Umur tambang dari cadangan dengan Metode Cross Section Standard adalah 50 tahun dan umur tambang dari cadangan dengan Metode Cross Section Linier adalah 50 tahun To meet the needs of comodities coal for power plants and PT.Lematang Coal Lestari will be conducting any activity estimates coal deposit, good estimates a quantity ( tonnage ) or estimates of quality in Gunungraja, kecamatan Rambang Dangku, kabupaten Muara Enim, Sumatera Selatan. Data that is available from topographical maps and the result gas drilling coal that is taken from 23 a drill hole show of coal in the research area having a thickness varying from 0,4 m – 17,69 m. a general direction layers northwestern - southeastern with a slope that varies between 3° - 10°. The thickness of coal maximum in the drill point GR-20 namely 17,69 meters and the thickness of the minimum is found in the drill point GR-5 namely 0,4 meters. Absence of difference thickness coal estimates caused by the process of weathering and sedimentation on the surface of topography different in every province known that quality coal in the research area calories 3.423 - 5.143 kcal / kg as well as data analysis proximate other.With its field that is hills wavy then was performed efforts assessment coal deposit with Method Cross Section Standard based Rule of Gradual Change and Method Cross Section Linier based Rule of Nearest Point as a compariason. Based on amendment 1-sni-13-4726-1998, classification coal in the research area including proven reserves. Estimates coal deposit conducted using methods cross section standard obtained tonnage 135.454.296 tons of coal while cross section linear with methods of coal at acquired tonnage 135.084.516 tons. Differences results estimates reserve with the methods cross section standard and methods cross section linear is worth 369.780 tons. The value of stripping ratio a method of cross section standard based on rule of gradual change is 3,696 : 1 while the value of stripping ratio a method of cross section linear based on rule of nearest point is 3,704 : 1 Old mines of the reserve by method standard cross section is 50 years old mines and reserves with the methods of cross section is linear 50 years Keywords: Coal, Reserves Estimation, Stripping Ratio, Cross Section Method
| 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 01:38 |
| Last Modified: | 19 May 2016 01:38 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/1595 |
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