PUTRA, DWI JAYA DIRGA (2014) PENAKSIRAN SUMBERDAYA ENDAPAN BAHAN GALIAN BATUBARA DI PT. MARGA BARA TAMBANG DESA RANTAU DUKU KECAMATAN RANTAU PANDAN KABUPATEN BUNGO PROVINSI JAMBI. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
Berdasarkan keadaan astronomi, wilayah PT. Marga Bara Tambang berada pada koordinat 101°57’35,9” BT sampai 101°58’9,3” BT dan 1°34’7,9” LS sampai 1°35’11” LS. dengan wilayah Izin Usaha Penambangan (IUP) PT. Marga Bara Tambang seluas 200 ha. Lokasi pemboran berada pada bagian tengah sebelah barat, dimana arah pemboran searah dip dengan arah umum batubara N295°E/15, Berdasarkan data singkapan dan hasil pemboran terdapat satu seam batubara dengan ketebalan semu bervariasi 1,3 meter sampai 6 meter. Kemiringan lapisan batubara adalah antara 80- 140 menujam dari utara ke selatan. Kondisi di terdiri dari dataran rendah dengan elevasi 100 mdpl dan perbukitan dengan elevasi tertinggi sampai 140 mdpl. Jarak titik informasi menurut kondisi geologi daerah penelitian yang moderat. Jarak antar lubang bor rapat yaitu ±50 m. Berdasarkan Amandemen 1-SNI-13-5014-1998 maka batubara daerah penelitian dapat diklasifikasikan ke dalam Sumberdaya Terukur (Measured Resource). Penaksiran dengan menggunakan metode Cross Section Standar (Rule of Gradual Changes) dan Cross Section Liniear (Rule of Nearst Point) diperoleh hasil yang sama untuk estimasi volume tonase batubara yaitu sebesar 396.042,2262 ton, sedangkan perhitungan dengan metode poligon diperoleh volume tonase batubara yaitu sebesar 374.284.,293 ton. Selanjutnya dalam perhitungan volume overburden berdasarkan perhitungan dengan metode Cross Section Standar (Rule of Gradual Changes) dan Cross Section Liniear (Rule of Nearst Point) diperoleh juga hasil yang sama yaitu sebesar 2.554.038,287 m3, sedangkan perhitungan dengan metode poligon (Area of Influence) diperoleh volume overburden sebesar 2.340.610,787 m3. Perbedaan hasil estimasi volume batubara sebesar 21.757,5969 ton. Nisbah pengupasan (stripng ratio) dengan menggunakan metode Cross Section Standar (Rule of Gradual Changes) dan Cross Section Liniear (Rule of Nearst Point) diperoleh hasil yang sama yaitu 6,4:1 sedangkan menggunakan metode poligon (Area of Influence) diperoleh 6,25:1. Hasil nisbah pengupasan tersebut lebih kecil dari yang ditetapkan oleh perusahaan yaitu 8:1. According of astronomy, the PT Marga Bara Tambang located at coordinates 101 ° 57 ' 35,9 "BT to 101 ° 58 ' 9.3" E and 1 ° 34 ' 7, 9 "LS to 1 ° 35 ' 11" LS with the Mining Business License (IUP) covering an area of 200 hectar. Location of drilling in central part of the West, direction of drilling according dip of seam coal with general direction N295 ° E/15, base on the results of drilling and outcrops there is have one seam with apperent thickness is 1.3 meters - 6 meters. Seam dip between 80-140 from North to South. topography with lowest elevation 100mdpl and hill with highest elevation 140 mdpl. Distance point information according to the geological conditions of the area of research that is moderate. Drill hole spacing ±50 meter. According of Amendment 1-SNI-13-5014-1998 then coal research areas can be classified into Measurable Resource. Assessment by using Cross Section Standard method (Rule of Gardual Changes) and Cross Section Liniear method (Rule of Nearst Point) both obtained same results for the estimation of coal volume is 396.042,2262 tonnage. While Calculation with Polygon method obtained for the estimation of coal volume is 374.284,293 tonnage. Calculation of the volume overburden based on Cross Section Standard method (Rule of Gradual Changes) and Cross Section Liniear (Rule of Nearst Point) both obtained the same result is 2.554.038,287m3, While the calculation volume of overburden with Polygon method (Area of Influence) is .340.610,787m3. The difference results estimation volume of coal is 21.757,5969 tonnage Stripping ratio by using Cross Section Standard method (Rule of Gradual Changes) and Cross Section Liniear method (Rule of Nearst Point) obtained the same result is 6.4: 1 while using the Polygon method (Area of Influence) is 6.25:1. Both of that result is smaller than specified stripping ratio by the company 8:1. Keyword : overburden, seam, dip, cross section, standard, liniear, rule of gradual changes, rule of nearest point, polygon, infarea of influence.
| Item Type: | Thesis (Other) |
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| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Suprapti |
| Date Deposited: | 25 May 2016 04:28 |
| Last Modified: | 25 May 2016 04:28 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/2431 |
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