BULLAH, HAZI (2013) RANCANGAN TEKNIS PENAMBANGAN BIJIH BESI DI PT. SITASA ENERGI DESA PULAU LAYANG KABUPATEN MERANGIN PROVINSI JAMBI. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
PT. Sitasa Energi merupakan suatu perusahaan swasta nasional, bergerak di
bidang pertambangan bijih besi yang terletak di Desa Pulau Layang Kabupaten
Merangin Provinsi Jambi. Wilayah IUP Operasi Produksi daerah prospek I PT.
Sitasa Energi seluas 400 Ha, dengan keadaan geografisnya, wilayah PT. Sitasa
Energi berada pada koordinat 102°05’52,4” BT sampai 102°9’46,3” BT dan
2°1’40” LS sampai 2°4’22,9” LS.
Endapan bijih besi yang akan ditambang secara umum tersingkap di
permukaan tanah berada di lereng cekungan antar bukit, yang merupakan endapan
kolovial. Rencana penambangan pada daerah ini dilakukan dengan metode
tambang terbuka open cast. Rancangan penambangan yang berbasis komputasi
dengan menggunakan Software Autocad, dan Surpac 6.5, untuk rancangan yang
baik dan terarah.
Berdasarkan model rancangan, diketahui cadangan bijih besi tertambang di
daerah penelitian pada pit blok gunung es adalah sebesar 643.485 ton. Geometri
penambangan yang diperoleh dari rekomendasi geoteknik adalah tinggi jenjang
tunggal 5 meter , lebar jenjang 2 meter dan kemiringan jenjang tunggal 65°, untuk
sudut interramp slope angle 500 dan overall slope angle with ramp 430. Lebar
jalan angkut tambang pada jalan lurus sebesar 8 meter, pada tikungan 11 meter,
dan kemiringan jalan angkut maksimum sebesar 9 %. Berdasarkan hasil
rancangan teknis penambangan didapatkan jumlah tahapan penambangan
(sequence) di pit blok gunung es sampai pada elevasi pit bottom yaitu berjumlah
12 tahapan penambangan dengan elevasi pit bottom 128 meter diatas permukaan
laut (dpl), dengan tahapan sequence berdasarkan tinggi bench 5 meter sampai
pada elevasi pit bottom. Striping ratio komulatif dari hasil rancangan berdasarkan
aspek teknis didapatkan sebesar 0,48 : 1. Jumlah sequence target produksi per
semsester sebanyak 3 semester dengan produksi pada semester 1 sebesar 210.000
ton, semester 2 sebesar 210.000 ton, dan semester 3 sebesar 223.845 ton.
Rancangan penimbunan overburden dilakukan pada 2 lokasi dump yaitu lokasi
dump 1 dan lokasi dump 2, lokasi dump 1 berada di sebelah Barat dari lokasi
penambangan dengan elevasi tertinggi dump yaitu 173 meter (dpl) dan lokasi
dump 2 berada di sebelah Timur lokasi penambangan dengan elevasi tertinggi dari
dump yaitu 169 meter (dpl), dengan jumlah komulatif overburden sebesar 307.579
BCM.
PT. Sitasa Energi is a national private company that engaged in mining
iron ore which is located in the Pulau Layang village, Merangin, Jambi Province.
Exploitation IUP territory prospects area I PT. Sitasa Energi is 400 hectares, with
its geographical, the area of PT. Sitasa Energi is located at coordinates
102°05'52,4" East Longitude to 102°9'46,3" East Longitude and 2°1'40" South
Latitude to 2°4'22,9" South Latitude.
The deposits of Iron ore which is to be mined are generally exposed at
ground level on the slopes of the basin between the hills, and it’s the kolovial
deposit. The mining plan in this area is done by open cast mining method. The
draft mining - based on computerized system, uses Autocad Software and Surpac
6.5, for good and purposeful design.
Based on the design, it is known that reserves of mined iron ore in the
research area of pit gunung es blocks is 643,485 tons. The mining geometry
obtained from geotechnical recommendation is a single level 5 meters; width of
the bench is 2 meters and slope of bench level is 65°, for interramp slope angle
500 and overall slope angle with ramp 430. Mine haul road width is 8 meters on a
straight road and 11 meters in the bend, a maximum gradient is 9 %. Based on the
results of mining technical design found the number of sequence of mining in the
pit gunung es block until the pit bottom elevation that is numbered 12 stages of
mining at the pit bottom elevation 128 meters above sea level (dpl), with the step
of sequence based on the high bench level 5 meters to pit bottom elevation. The
cumulative Stripping ratio design obtained draft of 0.48 : 1. The amount of the
target sequence per semsester production as much as 3 semesters with production
in the 1st half of 210,000 tons, 210,000 tons for the semester 2, and semester 3 of
223 845 tonnes. Overburden stockpiling draft conducted at 2 locations of dump
which is dump 1 and 2, one dump site is located in the west of the mine site with
the highest elevation dump is 173 meters (dpl) and the dump 2 site is located in
the east of the mine site with the highest elevation level of dump is 169 meters
(dpl), with the number of cumulative overburden is 307.579 BCM .
| Item Type: | Thesis (Other) |
|---|---|
| Subjek: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Suprapti |
| Date Deposited: | 23 May 2016 04:02 |
| Last Modified: | 23 May 2016 04:02 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/2087 |
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