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Journals Mining Engineering : Bina Tambang
Published by Universitas Negeri Padang
ISSN : -     EISSN : 23023333     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Atas dukungan dari jurusan Teknik Pertambangan dengan Penanggung Jawab Dekan Fakultas Teknik UNP (Drs. Ganefri,MPd, P.hd) bekerjasama dengan Ketua Jurusan Teknik Pertambangan (Drs.Bambang Heriyadi,MT) dan seluruh Dosen Jurusan Teknik Pertambangan Fakultas Teknik Universitas Negeri Padang. Jurnal ini terbentuk dan didukung penuh untuk sarana kretifitas Dosen dan Mahasiswa Teknik Pertambangan.
Arjuna Subject : -
Articles 609 Documents
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EVALUASI SISTEM PENYALIRAN PADA TAMBANG BATUBARA PIT 2 PT. BENAL AITI BARA PERKASA JOBSITE JPC, SAROLANGUN JAMBI Monica Welly; Rusli HAR
Journals Mining Engineering : Bina Tambang Vol 7, No 1 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i1.117754

Abstract

Sistem penambangan secara terbuka sangat dipengaruhi oleh cuaca, salah satunya ketika terjadinya hujan. Berdasarkan pengamatan yang penulis lakukan di tambang batubara PT. BABP, penulis menemukan adanya genangan air pada area kerja di jalan tambang yang bersebelahan dengan sump yang merupakan tempat kolam penampungan air. Genangan air yang memenuhi jalan tambang dikarenakan air yang terkumpul pada kolam penampungan air (sump) telah melebihi kapasitas sump yang kemudian meluap hingga menggenangi badan jalan. Untuk mengurangi resiko meluapnya air pada sump tersebut diperlukan perhitungan dalam menganalisis bagaimana dimensi sump yang memadai serta mengevaluasi kebutuhan pompa sehingga bisa meminimalisir terjadinya resiko air dari sump meluap ke badan jalan tambang.Metode pemecahan masalah dilakukan dengan menghitun luas Catchment Area, debit air limpasan, debit air tanah dan debit air total agar dapat menganalisa dimensi saluran terbuka, sump, kolam pengendapan dan menghitung kebutuhan pompa. Berdasarkan pengukuran yang dilakukan pada sofware Arcgis 10.4, pada daerah tangkapan hujan atau Catchment area di Pit 2 PT. Benal Aiti Bara Perkasa yang masuk ke dalam bukaan tambang memiliki luas  sebesar 74,85 Hektar.Berdasarkan perhitungan volume air limpasan dan air tanah maka volume total air yang masuk kedalam sump bintang adalah sebesar 29.308,458 m³/detik. Dari perhitungan Head total pompa Jumlah pompa yang dibutuhkan oleh PT. Benal Aiti Bara Perkasa untuk mengeluarkan air yang masuk ke pit 2 pada tahun 2020 adalah sebanyak 3 unit merk Ebara Pump 125 x 100 FS JCA.Dimensi Sump yang direncanakan pada Tahun 2020 yaitu dengan luas permukaan 416 m x 408 m, luas dasar 408 m x 400 m, kedalaman 7 m serta kapasitas tampung sebesar 1.165.248 m3. Dimensi Saluran Terbuka/Open Channel Tahun 2020 berbentuk trapesium dengan kemiringan dasar saluran (S) = 0,25 %, lebar dasar saluran (b) = 2,24 m, lebar permukaan (B) = 5,06 m, kedalaman saluran (d) = 1,948 m, kedalaman aliran (z) = 0,29 m, panjang sisi luar saluran (a) = 2,25 m, dengan debit yang dialirkan sebesar 12,93 m3/detik. Kata Kunci : Catchment Area, pompa, sump, saluran terbuka dan kolam pengendapan lumpur.
Evaluasi Kinerja Long Belt Jalur 71 Untuk Pengangkutan Limestone di PT. Semen Padang Kecamatan Lubuk Kilangan Provinsi Sumatera Barat. Jeffrey Leonardi Nurkamal; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 7, No 1 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i1.117680

Abstract

. PT Semen Padang is one of the departments in the oldest cement company in Southeast Asia, namely PT Semen Padang. The mining department is tasked with supplying the company's basic needs, namely limestone or limestone as raw material for cement production. The mining department of PT Semen Padang is located about 10 km to the east of the factory site so that in delivering limestone material PT Semen Padang uses a belt conveyor as the material conveying medium.The evaluation carried out on the belt conveyor which has a small capacity is carried out by changing the gear box specifications to a higher specification in accordance with the maximum capability of the belt so that it is expected that the speed of the conveyor belt will increase and increase the capacity of the conveyor belt so that production and material delivery can be maximized and can meet the company's limestone production target of 26,181 tons/day, in December there were several days that did not meet the production target and the lowest was only 4,500 tons/day. Recommendations to increase the productivity of the 6A1J03 belt conveyor with a speed of 1.5 m/s, an angle of 20° and a belt width of 3000 mm with a yield of 2939,632 tons/hour and for a 6A1J10 belt conveyor with a speed of 2.5 m/s, an angle of 35° and belt width 1600 mm with a yield of 2587.02 tons/hour.
Pengaruh Penggunaan Polimer Terhadap Kualitas Batubara di PT. Bhumi Sriwijaya Perdana Coal, Desa Bero Jaya Timur, Kecamatan Tungkal Jaya, Kabupaten Musi Banyuasin, Sumatera Selatan RIDHO FADHIL HERNAWAN; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 7, No 2 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i2.119065

Abstract

PT. Bhumi Sriwijaya Perdana Coal (PT. BSPC) is a coal mining company located in East Bero Jaya Village, Tungkal Jaya District, Musi Banyuasin Regency, West Sumatra Province. PT. BSPC implements an open pit mining system. The quality of coal in PT. Bhumi Sriwijaya Perdana Coal has a very high total moisture, which contains 45%. With the high total moisture content contained in coal, PT. BSPC innovates by using chemicals containing polymers to maintain total moisture, ash content and calorific value. The research method used is quantitative which refers to experimental research. In the research conducted, there was a change in the value of coal parameters. The tests carried out were 1 ton and 10 tons of coal given 50 liters of water and 1 liter of chemicals by comparing the effectiveness of using Supercoat (P1) and Coalguard (P2). The result obtained was a decrease in the value of TM on coal of 1 ton and 10 tons. In 1 ton of coal, there was a decrease in TM values for P1 and P2 by 0.15% and 0.47%. decrease in Ash values for P1 and P2 by 1.61% and 2.22%. and for caloric values for P1 and P2 there was an increase of 122 kcal/kg and 131 kcal/kg. in 10 tons of coal there was a decrease in the TM value for P1 and P2 by 4.74% and 5.51%. decreased Ash values for P1 and P2 by 2.83% and 3.24% and for caloric values for P1 and P2 there was an increase of 317 kcal/kg and 394 kcal/kg. Based on the results of tests that have been carried out, it can be concluded that the use of a more effective chemical is Coalguard at a 10-ton test.
PERANCANGAN SEQUENCE DAN SCHEDULLING PENAMBANGAN BATUBARA DI PT. ALLIED INDO COAL JAYA, PARAMBAHAN, DESA BATU TANJUNG, KECAMATAN TALAWI, KOTA SAWAHLUNTO, SUMATERA BARAT Muhammad Al Fajri Tamsin; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 7, No 2 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i2.119012

Abstract

PT. Allied Indo Coal Jaya is one of the companies engaged in Coal mining with an IUP covering an area of 327.40 Ha, in actual mining activities using the Open Pit method with a production target in 2021 of 278,000 MT of Coal , suddenly the company decided to increase the production target in 2022 by 404,000 MT for the Open Pit so that a re-mine planning is needed to support production activities in 2022 and beyond, the mine Design begins by calculating the Volume of Overburden and Coal contained in the mining boundary area so that a Resgraphic is obtained which is useful for Designing Pit Limit., then this Pit Limit is the economic limit of mining, then the annual Sequence Design is carried out according to the company's production target in the next 3 years, making the Sequence using the sequential method, namely to Mining activities are carried out simultaneously in certain areas with different elevations. In Year 1, total OB production was 5,179,135.9 BCM and total Coal production was 251,748 MT with a total effective working hour of 2,520 hours. In Year II mining, the acquisition of OB was 5,116,000 BCM and Coal was 401,000 MT. Likewise with Mining Year III where the acquisition of OB is 5,093.00 and Coal is 401,000,. In the above annual Design, the total Volume of Overburden is 15,371,000 BCM and the amount of Coal is 1,201,000 MT, so that the remaining vs. 3,524,043 BCM for OB and about 219,976.7 MT of Coal .
Analisis Kestabilan Lereng Menggunakan Metode Janbu Simplified Pada Lereng di Permukaan Lubang masuk Thc-04 Tambang Batubara Bawah Tanah CV Tahiti Coal, Sangkar Puyuh, Kecamatan Talawi, Kota Sawahlunto, Provinsi Sumatera Barat Muhammad Fajar Hidayat; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 7, No 3 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i3.120570

Abstract

CV. Tahiti Coal merupakan salah satu perusahaan yang bergerak di bidang pertambangan dan telah berinvestasi di Kota Sawahlunto. Bahan galian yang telah ditambang adalah batubara. Secara administrasi lokasi KP Eksploitasi tersebut di Desa Sijantang, Kecamatan Talawi, Kota Sawahlunto Provinsi Sumatera Barat dengan luas 53,80 Ha. Pada wilayah izin usaha penambangan CV. Tahiti Coal penulis menemukan adanya  pada permukaan lereng lubang Thc-04 dengan ketinggian sekitar ±29,5m dengan kemiringan 77° yang berkemungkinan akan terjadinya longsor. dengan kondisi lereng tersebut berpotensi membahayakan pekerja dan menghambat produksi. Berdasarkan data hasil pengujian sifat fisik dan mekanik batuan siltstone mendapatkan nilai bobot isi asli 20,83KN/m3, nilai bobot isi jenuh 23,07KN/m3, nilai bobot isi kering 18,19 KN/m3, kohesi (c) = 40,1 Kpa dan sudut geser dalam (ϕ) = 40,47°. Analisis nilai faktor keamanan (FK) dari lereng aktual kondisi jenuh didapat nilai FK sebesar 0,910. rekomendasi geometri lereng aktual kondisi jenuh menggunakan metode Janbu simplified dengan ketinggian keseluruhan 29,5m dan kemiringan 66˚ dimana lereng tunggal 1 didapat nilai Fk Sebesar 1,407 dengan ketinggian 15m dan sudut 80˚, pada lereng tunggal 2 didapat nilai FK sebesar 1,390 dengan ketinggian 14,5m dan sudut 77˚, sehingga di peroleh FK  lereng keseluruhan dalam kondisi jenuh sebesar 1,301.
Evaluasi Dan Penyesuaian Sistem Ventilasi Pada Tambang Batubara Bawah Tanah Lubang SD-C2 Manual PT. Nusa Alam Lestari Kecamatan Talawi kota Sawahlunto Provinsi Sumatera Barat khazana tulistra; mulya gusman
Journals Mining Engineering : Bina Tambang Vol 7, No 2 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i2.119057

Abstract

The ventilation system in Hole SD-C2 PT. Nusa Alam Lestari is a forcing system and does not apply an exhaust fan. So that dirty air from the mining front is not immediately transported out, and the clean air that flows from the main blower is mixed with dirty air coming from the mining front. Some leaks are still detected in the ventilation line. Leaks are still detected in the ventilation path at a depth of 2 m, 30 m, 50 m, 60 m, and 70 m from the opening. After taking measurements at several points, the temperature value in the SD-C2 Manual Hole is 27-290C. Conditions that exceed Kepmen 1827 K/30/MEM/2018. The research method used is the Applied Method (Sugiono, 2013:2). The data sources used are primary data and secondary data, with problem-solving using quantitative and qualitative data. Solving the problem by calculating the air requirement for workers, tools, and dilution of methane gas to get the total air requirement. The total amount of air required at the underground mine of PT. Nusa Alam Lestari at the location of the SD-C2 Manual opening for 15 workers (0.45 m 3 /s), the air required in the work front is (6.6248 m 3 /s) and to dilute methane gas (0.099 m 3 /s ) with the overall air quantity (10.411 m 3 /s). Based on the calculation of the required air quantity, the hole requires 4 blowers to meet these needs, and to make the condition of the hole more comfortable, it is necessary to add a suction fan unit to speed up the transportation of polluted air out of the hole. Ventilation system modeling produces a 3D model of the ventilation system before and after the addition of the blower.
analisis ketercapaian produktivitas Bauxite Ore Getting terhadap produktivitas Bauxite Processing Plant PT. Jaga Usaha Sandai (PT. JUS) site sandai, Kecamtan Sandai, Kab Ketapang, Kalimantan Barat Fuji Kurniansyah; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 7, No 2 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i2.119010

Abstract

PT. Jaga Usaha Sandai (PT. JUS) is one of the contracting companies in the field of Bauxite Mining located in Sandai District, Ketapang Regency, West Kalimantan Province. Mining process at PT. Jaga Usaha Sandai, one front loading using 1 unit of Excavator to serve 8 units of Dump Truck and 1 washing plant tool to wash bauxite material. PT. Jaga Usaha Sandai has a target of 300,000 MT / month, and for each washing plant as much as 75,000 MT / month. While the realization of production reached in October amounted to 246,554.09 MT, it can be said that it has not achieved the production target. After analysis and repair efforts were obtained production on the digging tool loaded 490.43 Tons / hour, the conveyance became 45.06 Tons / hour and bauxite processing plant to 357.19 Tons / hour.  And the effective working hours of the digging tool loaded by 83%, the conveyance of 84%, and bauxite processing plant to 84%. 
Analisis Penentuan Kualitas Batubara Berdasarkan Uji Proksimat di PT. Pelabuhan Universal Sumatera Kabupaten Muaro Jambi, Provinsi Jambi FEBRYANTI FEBRYANTI; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 7, No 3 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i3.120574

Abstract

PT. Universal Port of Sumatra is a company engaged in port services that handles loading and unloading of coal. Distribution of coal at PT. Universal Sumatra Port does not take place every day, but depends on consumer demand, therefore coal accumulation occurs in the long term. PT. Universal Sumatra Port has never tested the quality of coal. Meanwhile, in the Minister of Energy and Mineral Resources Decree Number 1827 of 2018 it is explained that, in stacking activities, efforts must be made to maintain the quality of stacked coal. One of the efforts to maintain the quality of coal is by conducting quality testing. Therefore, this study was conducted to determine the value of coal quality and rank (rank) of coal, as well as what factors can cause changes in the value of coal quality. To determine coal quality, proximate analysis was used with test parameters, namely, total moisture (TM), ash content (AC), volatile matter (VM), fixed carbon (FC), and calori value (CV). Based on the results of testing in the coal quality laboratory at PT. Universal Sumatra Port did not experience significant changes, namely the total moisture value of coal in stockpile 13.58 while on barge 15.21, ash content value in coal in stockpile 3.09 while on barge 3.27, volatile matter value in coal in stockpile 51.51 while on barge 51.11, and the calorific value of coal in stockpile is 5411.90 while on barge 5397.75. It can be assumed that coal at PT. Universal Sumatra Port is categorized at subbituminous rank B (based on coal classification according to ASTM).
Analisis Sistem Penyaliran Tambang Terbuka Penambangan Batubara di PT. Kalimantan Prima Persada Jobsite PCNS, Desa Sebamban, Kec. Sungai Loban, Kab. Tanah Bumbu, Provinsi Kalimantan Selatan Putri Arrina Haq; Rusli Har
Journals Mining Engineering : Bina Tambang Vol 7, No 3 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i3.120178

Abstract

PT. Kalimantan Prima Persada PCNS Jobsite is one of the coal mining companies engaged in mining contractor. Mining activities are carried out using the open pit mining method, which causes the formation of a basin that is wide enough and has the potential to become a water storage area, both from surface runoff and groundwater. Based on the results of the calculation of rainfall for a period of 12 years, from 2010-2021, with a catchment area of 216,03 Ha, the planned rainfall value is 182,38 mm in a 10-year return period, with a rainfall intensity of 62,46 mm/hour and runoff discharge of 20,2 /second. Based on observations of field conditions by looking at the difference in the initial and final elevations that occur in the Majapahit Pit sump, the amount of groundwater that enters the Majapahit Pit sump is 1,35 /second. The total water discharge which is the overall discharge that will be accommodated in the sump is 21,55 /second. For the total pump head that must be provided to drain the amount of water as planned is 106,2 m, with a pump power of 32,77 kW or 43,94 Hp, then the pumping activity with one available pump is only able to dry 20% of the total sump capacity. The volume of water in the sump in a day after pumping is 1.847.017,12 .. Recalculation of the sump dimensions at the research site is not necessary, because there is no economical coal reserve under the sump. For an economical open channel design, it is known that the bottom width of the channel (b) is 1,25 m, the hydraulic depth (y) is 1,5 m, the wet cross-sectional area is (A) 3,18 , the wet perimeter (P) is 4,71 m, the hydraulic radius (R) is 0,75 m, the length of the channel slope (a) is 1,495 m, the top surface width (B) is 2,99 m and the channel guard height (W) is 0,86 m, the open channel discharge is 4,8 /second so it can accommodate the pumping discharge issued at the outlet which is 0,216 /second. The volume of the sludge settling pond which made by the Engineering Department of PT. Kalimantan Prima Persada PCNS Jobsite is 65.289  so it can accommodate if the rainfall is high, which is 64.880,95  and there is no need to add another pond.
EVALUASI GEOMETRI PELEDAKAN OVERBURDEN UNTUK MENDAPATKAN FRAGMENTASI IDEAL DI PT. TAMBANG RAYA USAHA iTAMA (TRUST) KUTIM, KALIMANTAN TIMUR Muhamad Darmawan; Raimon Kopa M.T
Journals Mining Engineering : Bina Tambang Vol 7, No 2 (2022): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v7i2.119054

Abstract

Abstract. Coal Mining PT. Tambang Raya Usaha Tama (TRUST) with an open-pit mining system. In alternative pit 3 there are 100 cm chunks or boulder with a percentage of +40%. While the target for fragmentation in the company is 20%. So the boulders resulting from the blasting process will disrupt the loading of the overburden. The value of digging time on the Hitachi PC 2500 Excavator that is too long will certainly cause the productivity of the digging tool to be disrupted. The average digging time of the Hitachi PC 2500 Excavator Excavator on the material resulting from blasting from the actual blasting activity is ±15 seconds (CTM). This digging time is still far from the standard digging time set by the company, which is in the range of 10 – 12 seconds. The research method was carried out with a blasting geometry design based on the R L Ash, Konya, and ICI Explosive methods. The results of the analysis of the fragmentation distribution using the R.L.Ash method with a fragmentation distribution of 100 cm in size retained 5% with a powder factor of 0.56 kg/bcm. The C.J Konya method with a fragmentation distribution of 100 cm in size retained 8% with a powder factor of 0.50 kg/bcm. The Ici Explosive method with a fragmentation distribution of 100 cm in size retained 7% with a powder factor of 0.40 kg/bcm. based on the results of consultations with the distribution company, the fragmentation size of 100 cm was retained 19% with a powder factor of 0.28 kg/bcm. Of all these methods, the optimal method for blasting geometry is to obtain a fragmentation distribution that suits the company's needs, namely the blasting geometry based on the results of consultations with the company. This can be seen from the results of the powder factor which is not too large and also the rock fragmentation obtained in accordance with the company's target.

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