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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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Analisis Kinerja Alat Gali Muat Dan Alat Angkut Untuk Mencapai Target Produksi 20.000 Ton/Bulan Pada Penambangan Batu Kapur Di PT. Anugrah Halaban Sepakat, Kabupaten Lima Puluh Kota, Sumatera Barat trihadma trihadma; 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.v7i2.119011

Abstract

PT. Anugrah Halaban Sepakat is a limestone mining company which is located in Laharkumbuh, fifty cities. In itsmining activities, the digging and loading equipment used by PT. Anugrah Halaban agreed is 1 unit of Volvo Pc 200 Excavatorand 2 units of Mitsubishi Colt Diesel 125 Ps Dump Truck. PT. Anugrah Halaban Agreed in area 1a set a limestone productiontarget of 20,000 tons / month, while the realization of limestone production in October was 11,067 tons. From the realizationdata, it can be concluded that limestone production in area 1a in October 2021 did not reach the target set by the company.Inorder for the limestone production target to run optimally, it is necessary to carry out a match factor analysis and furtherproductivity analysis regarding the working hours of the tool, look for causes and actions taken to achieve the target and makeimprovements to optimize the performance of the digging tool. One of the appropriate methods used in overcoming these problemsis the Overall Equipment Effectiveness (OEE) method which is a production process performance measurement tool that canmeasure various losses that occur and identify potential improvements. achieve production targets. After that, the fishbone methodwas used to find the cause and effect that caused the production to not be achieved, then an effort was made to improve the losstime which caused the reduction in the effective working hours of the digging tool that had been planned by the company with theapplication of the 5W + 1H technique. After analysis and improvement efforts, the match factor value was 1 of 0.41 and the totallimestone production on the Volvo Pc 200 Excavator was 72,982.31 tons and the Mitsubishi Colt Diesel 125 Ps Dump Truck was27,982.31 tons, which means it has reached the target. even exceeding the production target of 20,000 tons and the OEE value ofeach tool obtained by 61%, 27% and 26%. However, the OEE value is still < 85% of the world class standard OEE value, whichis 85% and there is still room for improvement.
Kajian Biaya Penggantian Penyanggaan Kayu di Lubang Maju THC 04 di Tambang Bawah Tanah CV.Tahiti Coal, Sangkar Puyuh, Kecamatan Talawi, Kota Sawahlunto, Provinsi Sumatera Barat Lulu Dwi Oktari; Heri Prabowo
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.v7i3.120571

Abstract

CV. Tahiti Coal is a mining industry company that exploits coal using underground and open pit mining methods. The company has 4 open pits that are still active, namely THC 02, Main Gate THC 03, Tail Gate THC 03 and Main Gate THC 04. In addition, there is also 1 open pit which temporarily stopped operating due to self-burning, namely THC 01. The mining method underground implemented by CV. Tahiti Coal is the Room and Pillar on THC 01, THC 02, THC 03. A pullback method is carried out, namely taking coal starting from the end which is taken from the bottom up (the previous branch line) leaving the top pillar 3 meters long. This taking is done 6 meters wide and interspersed with pillars 3 meters wide and so on up to the branch door. The coal that has been taken is assisted with the installation of supports and cribbing is carried out. At THC 04 using the room and pillar method, the direction of mining is planned in the direction of strike perpendicular to the dip which has a slope of 28-34 degrees. The buffer used by CV. Tahiti Coal is natural buffer and artificial buffer. Natural buffer is coal left behind with the aim of replacing pillars when making room and pillar opening holes. Meanwhile, artificial supports are supports formed from wood to hold the coal openings that have been taken. The type of wood used is first class wood.
Analisis Efektivitas Alat Gali-Muat Menggunakan Metoda Overall Equipment Effectiveness (OEE) untuk Meningkatkan Produksi Overburden di Pit Central PT Saptaindra Sejati Site Adaro Mining Operation Marta Weri; 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.v7i2.119069

Abstract

Based on data on stripping production overburden at the Central pit PT Saptaindra Sejati Jobsite Adaro Mining Operation (ADMO), stripping production overburden did not reach the target. This has an impact on operating costs incurred for stripping each BCM (Bank Cubic Meter) of thelayer overburden. To determine the potential for improvement of a production process and the effectiveness of using an equipment, it is necessary to carry out an analysis using the method Overall Equipment Effectiveness (OEE). OEE is known as a totalprogram application productive maintenance that has the ability to clearly identify the root of the problem and its causative factors so as to make improvement efforts more focused. In the analysis process of the OEE formula, themethod is also used Six Sigma to make improvements to the OEE value. Where, Six Sigma is a method for solving problems and improving the overall process. Furthermore, adiagram is used fishbone to find the root of the problem in more detail and an evaluation is carried out by referring to the method formulation six sigma.After analyzing and improving with these methods, the EX350-0005A Li R9400 production exceeds the planned target. However, the OEE value of each digging tool is still <85%, it has not reached the world class OEE value> 85%, it can be concluded that the condition of the equipment is not good. We recommend that you repair the time standby and breakdown again device
Slope Stability Analysis at Pit 1 Limestone Mining PT Anugrah Halaban Sepakat, Lareh Sago Halaban Sub-District, Lima Puluh Kota Regency, West Sumatra Province Juni Pratama; Raimon Kopa
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.v7i2.119027

Abstract

PT Anugrah Halaban Sepakat is one of the companies engaged in the mining sector and has invested in Fifty Cities Regency, West Sumatra Province. PT Anugrah Halaban Sepakat has two pits (pit 1 and pit 2), the slope characteristics of pit 1 are composed of homogeneous clay material which tends to be sticky in wet conditions, hard and cracked in dry conditions, has a geometry of 20 meters high. and a slope of 66°, which was made without taking geotechnical studies into account. Based on this, it is necessary to plan the research slope well so that the soil slope is in a stable condition. From the results of research and analysis carried out, the value of geotechnical parameters after testing the physical and mechanical properties of the slope material is the natural density of 15,77 kN/m3, the dry density of 14,14 kN/m3, and the saturated weight of 19,06 kN/m3. The cohesion value is 39,79 kN/m3, and the internal shear angle is 21,25°. The actual FK value in natural state using Bishop's method is 1,099, in dry state is 1,177 and saturated state is 0,985. Then the actual FK value using the Hoek and Bray method in dry conditions was obtained at 1,051 and in a saturated state of 0,720. The results of the analysis after modifying the single slope geometry from a slope of 66o to 46o, the FK value in the dry state is 1,562 and the saturated state is 1,319 by dismantling the soil as much as 4.262,076 m3. Then the results of the analysis after modifying the geometry of the overall slope made two single slopes each with a height of 7 and 13 meters and a bench width of 10 meters having a slope of 50o, the FK value in a dry state was 1,550 and in a saturated state of 1,315 by dismantling 2.514,35 m3 of soil.
Studi Optimasi Produksi Alat Gali Muat dan Alat Angkut Pada Kegiatan Pengupasan Overburden Menggunakan Metode Match Factor Berdasarkan Efisiensi Biaya Operasional Di Pit Eagle 3 PT. Bumi Karya Makmur, Job Site PT. IPC, Bantuas, Kota Samarinda, Provinsi Kalimantan Timur Joko Handayani; Try 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.v7i3.119971

Abstract

Overburden stripping is one of the activities that greatly affects mining activities, the faster the overburden stripping activity, the coal mining activities will be in accordance with the targets set by PT. Prosperous Work Earth. In carrying out the activities of stripping and transporting overburden in pit eagle 3 PT. Bumi Karya Makmur operates Caterpillar Excavator 345 GC, 340 D, and 320 GC units as digging and loading equipment and Dump Truck units for HINO 500 FM 260 JD and IVECO 682. The current problem is not achieving the overburden production target at pit eagle 3 in April 2021 is 125,000 bcm while the actual is 108,980,21 bcm. The method used in this study is the match factor method. Due to the incompatibility of work between digging and loading equipment, it is necessary to optimize tool productivity and work compatibility between loading and unloading equipment and transportation equipment. The actual value of the match factor between the digging and loading equipment is 1.186. To get the match factor value, cycle time optimization is carried out and the reduction in the number of transportation equipment used so that the match factor value becomes 0.986. So the production of loading and unloading equipment is 135.343,894 bcm/month and the means of transportation is 210.633,110 bcm/month. From the calculation results, it is obtained that the operational costs of loading equipment and transportation equipment for overburden removal before being analyzed are Rp. 469.266.180,92 or Rp. 4.247,04 /bcm. After analyzing the overburden stripping in accordance with the planned production target, the costs incurred are Rp 492.437.946,74 or Rp. 3.638,42 /bcm.
Perencanaan Stockpile Pelabuhan pada Coal Handling Facility PT. Surya Global Makmur Kecamatan Taman Rajo, Kabupaten Muaro Jambi, Provinsi Jambi Femi Audya Syifa; Mulya Gusman
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.v7i3.120593

Abstract

PT. Surya Global Makmur is a company that produces coal needs which is currently in the construction stage for a Coal Handling Facility with a Terminal for Self Interest (TUKS) port on an area of ±11 hectares located in Muaro Jambi Regency, Jambi Province. The port will be used as a temporary stockpile, before the coal can be transported back by barge to consumers. Stockpile has a function as a storage place for coal and requires management that must be in accordance with the process that coal will go through. The purpose of this research is to design a stockpile that will be implemented as a coal storage management. The principle used in this study is the principle of stockpile management, namely the First In First Out (FIFO) system, which means that the first coal to enter must be the first coal to leave the stockpile area.Based on the results of the coal pile design in the stockpile area of PT. Surya Global Makmur has 7 piles of coal in the shape of a pyramid for 3 types of coal calories, namely low calories, medium calories and high calories. In the simulation of coal delivery within a period of 30 days there is a stockpile of coal in the stockpile area of 40,000 tons and is adjusted to the results of calculations using Surpac 6.6.2 software. namely 141,199 tons, the stockpile capacity of PT. Surya Global Makmur is adequate to accommodate the amount of coal. The number of tools needed in the Coal Handling Facility stockpile area are 3 units of the WA380-7 wheel loader, 4 units of the PC300-8 excavator and 5 units of the Mercy 3336K dumptruck
Analisa Tingkat Kehilangan Batubara (Coal Losses) Dari Proses Coal Getting Sampai Barging Di PT. Bhumi Sriwijaya Perdana Coal, Kecamatan Tungkal Jaya, Kabupaten Musi Banyuasin, Provinsi Sumatera Selatan Farid Kanz Zaky; Rudy Anarta
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.v7i3.120200

Abstract

PT. Bhumi Sriwijaya Perdana Coal merupakan perusahaan tambang batubara yang melakukan penambangan dengan metode penambangan terbuka dengan menggunakan perhitungan Joint Survey, Truck Count, Weight Bridge dan Draught Survey untuk menentukan progress penambangannya. Dari empat metode tersebut terdapat selisih hasil antar metode yang dianggap sebagai kehilangan batubara (coal losses). Penelitian ini bertujuan untuk mendapat nilai kehilangan batubara serta melakukan analisis mengapa perbedaan tersebut bisa terjadi. Perhitungan kehilangan ini didapati dari membandingkan nilai perhitungan antara metode dan membagi selisih tersebut dengan metode yang dianggap paling akurat yang dalam hal ini merupakan metode Joint Survey.Hasil perhitungan kehilangan batubara pada StockROM PIT bulan Juli 2022, sebesar  -1,361.31  MT hingga  -1,438.91 MT atau -0,81% hingga -6,53% pada masing-masing PIT. Selanjutnya Hasil perhitungan kehilangan batubara StockROM Port sebesar  - 764,20  MT hingga -1,032.52 MT atau -0,80% hingga -7,08 % pada masing-masing PIT.  berdasarkan analisa, kehilangan ini bisa diminimalisir dengan mengubah faktor pengali batubara di masing masing PIT, juga bisa dengan mengubah nilai timbangan pada saat proses hauling dengan cara mengurangi angka tonase hauling. Penelitian ini berkesimpulan bahwa setiap kegiatan penambangan memiliki potensi kehilangan yang tidak dapat dihindari, namun kehilangan tersebut dapat diminimalisir dengan menerapkan pengawasan dan perencanaan yang efektif
Analisis Kestabilan Lereng Tambang Menggunakan Metode Janbu Simplified Dengan Pendekatan Probabilitas Kelongsoran Pada PLB Front IV Batukapur IUP OP 206,96 Ha PT. Semen Padang, Indarung, Provinsi Sumatera Barat Dewi Suryani; Bambang Heriyadi
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.v7i2.119047

Abstract

PT. Semen padang is a limestone mining company which is materials for cement manufacturing in lubuk kilangan, padang city. Ore is extracted by open pit mining method with a side hill type system, which is an open mining method that is applied to mine rocks located on hillsides or in the form of hills. The plb (point loading barat) area is one of an activity area for the limestone loading process in iup op 206.96 ha. The mining process causes the rock mass become unstable and has the potential for slope failure.The results of the actual slope analysis using method simplified janbu, the value of the safey factor (SF) is 1.05 and the probability of failures (PF) is 14.6%. And the saturated slope has a safey factor (SF) value is 0.8 and the probability of failures (PF) is 100%. Recommendations of slope geometry based on the results of slide 6.0 software analysis obtained a safety factor (fk) is 1.37 and the probability of failure (PF) is 0.00%. While in  saturated condition the result of  safety factor (fk) is 1.36 and probability of failure (PF)  is 0.00% with a slope height of 70.7 m and a slope of 42°. Based on the sensitivity plot graph, the material that affects the slope stability of plb front IV PT. Semen padang is the cohesion input material (c).
Kajian Sistem Manajemen Keselamatan dan Kesehatan Kerja Guna Mengurangi Risiko Bahaya pada Area Peledakan di Pertambangan Limestone PT. Semen Padang Ilham Harma Putra; Rijal Abdullah
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.v7i2.119007

Abstract

Abstract. The implementation of an occupational safety and health management system needs to bemandatory for every work implementation in locations that have the potential for work accidents in themining area. One company that owns a mining area is PT. Semen Padang. The purpose of this study is toreveal the forms of work accidents in locations that have the potential to cause work accidents in thelimestone mining area of PT. Semen Padang and revealed JSA from a work accident that occurred in thelimestone mining area of PT. Semen Padang.. The method used is a qualitative method using a risk matrixthat describes the probability value and the consequence value of an event which is expressed in the form ofa low risk to high risk range. It can be concluded that there are 15 forms of work accidents based on thehazard risks that occur from the survey results in the field and the risk level on the 15 hazard riskparameters is at the Low risk level.
EVALUASI KESERASIAN KERJA ANTARA ALAT GALI-MUAT EXCAVATOR KOMATSU PC300-8LC DAN ALAT ANGKUT DUMP TRUCK SCANIA P360 DI AREA PNBP VI UNTUK MENUNJANG TERCAPAINYA TARGET PRODUKSI BATUKAPUR BULAN AGUSTUS TAHUN 2022 PT. SEMEN PADANG Moudy Intan Fandini; 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.v7i3.120582

Abstract

PT. Semen Padang is one of the company cement producers in Indonesia that are members of in the Semen Indonesia Group. For activity mining , PT. Semen Padang did mining limestone and silica in the Bukit Karang Putih area which became the IUP ( Mining Business Permit ) of PT. Semen Padang. The mining activity conducted by open mine ( quarry ). In to do operation production, PT. Semen Padang cooperates with PT. United Tractors Semen Gresik (UTSG). For the PNBP area of the company using 1 unit tool dig load Komatsu PC300-8LC excavator 4 units tool transport Scania P360 dumptrucks. On August, PT. Semen Padang has set a UTSG production target of 9,000 tons/ day . Whereas realization productivity tool load reached only 2,873 tons/ day and tools transport 1,591 tons/ day . This thing caused by time work tools mechanical actual that is not effective because existence obstacles that cause height loss time. As for some Obstacles observed that is happening queue in crusher area VI for 15 minutes , time circulate tool transport actual for 23 minutes whereas the plan is 15 minutes, and it looks lateness operational tool during not enough more 10 minutes. After calculated match factor value among tool load and tools transport obtained MF < 1, then tool load wait with time wait 44.8 seconds , while tool transport work full . Based on problem just now then one method used is Queuing Theory. PT. Semen Padang, has size arrival with limited number and because only served by one excavator unit then service first coming who will served first FCFS (first come first service). After application theory queue got correct MF value of 1.2 and an increase in productivity tool transport to 2,825 tons/day. Production results after repair increase to 31% of the production target. Because after applied queue theory target 9000 tons/ day not yet is reached, then in achievement of production targets writer assume for reduce time circulate tool load be 15 seconds and time circulate tool transport be 15 minutes, and add tool transport becomes 16 units for 2 work shifts at mining PT. Semen Padang. Obtained results productivity tool transport of 9,012 tons/ day . Percentage productivity to 100.14% of the production target.

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