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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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Management Pengendalian Kualitas Batubara Berdasarkan Parameter Kualitas Batubara Mulai Dari Front Sampai Ke Stockpile Di PT. Budi Gema Gempita, Merapi Timur, Lahat, Sumatera Selatan. Fitri Rahma Yenni; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): 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.v6i1.111689

Abstract

Abstract. Pt. Budi Gema Gempita (PT. BGG) is one of the companies engaged in coal mining with the mining system implemented is the open pit mining system. coal produced by PT. BGG consists of different types grouped by their caloric value. To maintain the quality of coal, the company must have a coal quality control management team based on coal quality parameters, namely a series of activities in controlling the quality of coal, because in the process there is a decrease in the quality of coal that is when coal is mined (coal getting), then the accumulation of coal from the Front to the Stockpile area. Parameters used to maintain the quality of coal both clamped and stockpiled are total moisture (%),volatille matter, calories, ash content (%),), total sulphur (%). After sampling obtained results Coal quality on the mining front has a total moisture value (ARB) of 29.84%, inherent moisture value of (-)%, ash content value of 2.42%, volatile matter value of 32.56%, fixed carbon value of 35.18%, total sulfur value of 0.27% and calorie value of 4846 Kcal/kg, while the quality of coal distockpile ARB has a total moisture value of 30.01%, inherent moisture value of (-)%, ash content value of 2.65%, volatile matter value of 33.30%, fixed carbon value of 32.16%, total sulphur value of 0.30% and calorie value of 4866 Kcal/kg. The higher the fixed carbon value, the higher the caloric value.The lower the fixed carbon value, the ash content, moisture content and sulfur content will be higher.  Keywords: Coal, Pit channel, coal parameters, Stockpile, SOP Quality Control.
Analisis Kestabilan Lereng Penambangan Dengan Metode Janbu Menggunakan Software Slide 6.0 Pada Area Pit Barat Tambang Terbuka PT. Allied Indo Coal Jaya, Kota Sawalunto, Sumatera Barat. Fikhrul Arsyad; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (2021): 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.v6i2.111711

Abstract

Abstract. Based on observations made on the slopes in the pit area east of the open pit PT. Allied Indo Coal Jaya, found rock slope which has a height of 16 meters, slope angle is 74 and has many weak plane structures that can cause landslides. From the results of the research that has been carried out, the rock cohesion value is 0.095 MPa and the value of the friction angle in the rock is 39.11º. In determining the value of the slope safety factor using slide 6.0 software, the value of the slope safety factor in saturated conditions is 1.214; the original condition was 1.357 and the dry condition was 1.483. So it can be concluded that the slope is not safe when the conditions are saturated. For that, it is necessary to make improvements to the slope geometry. The recommended improvement is to change the slope geometry to two slopes thereby increasing the value safety factor initialy 1,214 to be 1,266.Keywords: Slope, failure, cohesion, friction angle, safety factor.
Analisis Pengaruh Pemberian Cangkang Kemiri Terhadap Nilai Parameter Batubara di CV. Bara Mitra Kencana, Sawahlunto Ilal Fajri Setiawan; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): 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.v6i1.111339

Abstract

Abstract. CV. Bara Mitra Kencana is a mining company engaged in coal mining, located in the city of Sawahlunto, West Sumatra. Coal produced by CV. Bara Mitra Kencana Consists of various types, which are grouped based on their calorific value originating from different pits. These coal calories are influenced by the geological conditions of a mining location, including high quality, medium quality and low quality coal. With differences in coal quality at each coal seam, the coal mixing process is necessary. done so that low quality coal can be utilized. Research with this method aims to determine the effect of low quality coal when mixed with hazelnut shells, the use of a mixture of candlenut shells on coal will see its effect on calories, sulfur, ash, total moisture, fixed carbon and coal volatile matter.Based on the results of the above research shows where the initial coal calorie is 4700 cal / g to 6443.11 cal / g, the initial coal sulfur is 2.66% to 0.079%, the initial coal moisture inherent is 1.91% to 4.39%, Volatile The initial coal matter was 27.54% to 31.88%, the initial coal Ash content was 30.17% to 14.45%, the initial coal fixed carbon was 40.38% to 50.18%.                 Keywords : coal quality, candlenut shells, calories, ash content, sulfur, volatile matter
Evaluasi Keselamatan dan Kesehatan Kerja pada Penambangan Batubara PT. Nusa Alam Lestari, Desa Salak, Kecamatan Talawi, Sawahlunto, Sumatera Barat Rinad Edmon; Fadhilah Fadhilah
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (2021): 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.v6i2.111701

Abstract

Abstract. PT. Nusa Alam Lestari is an underground coal mining company located in Salak Village, Talawi District, Sawahlunto, West Sumatra. PT. Nusa Alam Lestari has implemented Occupational Safety and Health (HSE) in mining activities, but the application is still not optimal. This is due to the lack of signs and posters of HSE in the work area, not optimal use of personal protective equipment (PPE), some workers who do not comply with company regulations, the occurrence of work accidents, some workers who argue when given directions, the need for existing JSA and SOP television, and the creation of job safety analysis (JSA) and standard operating procedure (SOP) needed. Occupational Safety and Health evaluation that has been applied using questionnaires with knowledge value of 75.74, attitude value of 85.27, and action value of 79.91. Where the overall result of the questionnaire with a score of 80.31. If the value is adjusted based on the likert scale owned at a very good range (80-100). Television and manufacture of JSA and SOP in gas checking activities, jack hammer operation, production activities, lorry operation, and coal hauling to stockpile. Keywords : Underground mining, Jack hammer, Lorry, Job Safety Analysis, Standard Operating Procedure.
Optimalisasi Produktivitas Batu Andesit Menggunakan Metode Quality Control Circle Untuk Memenuhi Target Produksi Batu Andesit 18.000 ton/bulan Pada PT Pebana Adi Sarana Nagari Manggilang Kec. Pangkalan Koto Baru Kab. Lima Puluh Kota, Provinsi Sumatera Barat Rani anggraini; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 5, No 5 (2020): 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.v5i5.110216

Abstract

Abstract. PT Pebana Adi  Sarana is a company engaged in andesite mining located in Lima Puluh Kota Regency. Andesite mining activities are carried out using the quarry mining method.PT Pebana Adi Sarana has a constant mounly production target of 18.000 tons/month. However, the realization of production for the august-september 2020 period was not achieved, namely ar 15.215,33 tons/month. Where the production achieved is only 84,5% og the target set by the company.This study uses the QCC method to increase production based on a paretto analisys of the main problem and the dominant cause of the not optimal production of minning equipment is 47% while on the conveyance 42% of the avaible working time. By making improvements to the working tim wasted with the QCC menthod the productivity increased to 44% for loading equipment and tranportation equipment bu 38% from the actual productivity. After encreasing the time wasted to be 93,79 hours/month for digging tolls and 81,09 hours/mont foe comveyances.Keywords : Excavator, DT Scannia, Productivity, Quality Control Circle, Paretto, Fishbone
Analisis Stabilitas Lereng Terhadap Longsoran Pada Titik Rencana Lubang Bukaan THC 04 CV. Tahiti Coal, Sangkar Puyuh, Sawahlunto, Sumatera Barat. Pandu Poernaddie Iswara; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (2021): 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.v6i2.111806

Abstract

Abstract. Based on observations made on the slopes in the THC 04 CV. Tahiti Coal, found rock slope which has a height of 30 meters, slope angle is 80° and has many weak plane structures that can cause landslides. Therefore it is necessary to analyze the rock mass and the stability of the slope. From the analysis that has been done, the rock mass classification value is 53, with medium quality and safety factor value at saturation condition is 1,141, original condition is 1,380, dry condition is 1,443. So it can be concluded that the slope condition is stable, except when saturated. Therefore, improvements need to be made in the form of reducing the slope angle to 66º and 67°, so that the value of the saturated slope safety factor changes to 1.256.Keywords: Open pit, slope, landslide, rock mass, safety factor.
Analisis Kestabilan Lereng Menggunakan Metode Janbu Simplified Pada Blok Bukit Jaya Pt. Cahaya Bumi Perdana Kota Sawahlunto Provinsi Sumatera Barat Muhammad Ichsan Busra; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): 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.v6i1.111746

Abstract

Abstract. At PT. Cahaya Bumi Perdana, there is a slope with a height of about ± 30 m with a slope of 710 on the slope there are two types of slope-forming material that are in 1 bench, namely soil and rock material that is likely to occur landslides, with the slope conditions potentially endangering workers and hindering production. Based on the data from the physical and mechanical properties of sandstone rock, the original bulk density value was 8.024 KN / m3, the saturated weight value was 16.016 KN / m3, the dry weight value was 5.005 KN / m3, cohesion (c) = 0.0059 Mpa and the inner angle of shear. (ϕ) = 63,808 °. The analysis of the value of the safety factor (FK) and the recommendation of the actual slope geometry used the janbusimplified method with a height of 33m and a slope of 65˚ so that the FK obtained was 1.427. For geometric recommendations for slopes in a saturated state using the Janbu simplified method with a height of 33m and a slope of 65˚, the FK obtained is 1.317. From the value of the safety factor (FK) the recommendations obtained can be concluded that the slopes are stable.Keyword: Physical and Mechanical Properties of Rocks, Slope Geometry, Janbu Simplified, Safety Factors
Pengaruh Tegangan Listrik Dan Konsentrasi Larutan Elektrolit Pada Proses Pemurnian Timah (Sn) Berdasarkan Metoda Electrolytic Refining di Unit Metalurgi PT. Timah Tbk, Mentok, Bangka Barat, Bangka Belitung. Bayu Muhammad Ilham; Fadhilah Fadhilah
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (2021): 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.v6i2.111760

Abstract

Abstract. PT. Timah Tbk (TINS) is the largest tin producer in the World. One of the products produced by TINS is tin with 99.99% Sn content, it is the result of the electrolytic refining process with electrolysis method. Electrolysis is influenced by several factors such as electric current and voltage, electrode dimensions, pH and the concentration of the electrolyte solution used. This research has aim to determine the appropriate values of voltage and electrolyte concentration values to optimize the tin (Sn) electrolysis process. The research was carried out in two stages experiment using electrolyte Stannous Chloride (SnCl2) dissolved with Hydrochloric Acid (HCl) and Aquadest. The first with the voltage values of 6, 9, and 12 volts at the electrolyte solution concentration of 0.001 M, the reduced Sn mass was 0.04257, 0.0885, and 0.1182 grams. The next with the electrolyte solution concentration of 0,002, 0,003, 0,004 and 0,005 M at the voltage 12 Volts, the reduced Sn mass was 0,1620, 0,2005, 0,3318 and 0,4158 grams. It is known that the optimal electrolysis process is with a voltage of 12 Volts and a electrolyte solution concentration of 0.005 M. This shows the effect of increasing voltage and electrolyte solution concentration values, will optimize electrolysis process.Keywords: Electrolysis, Electrolyte Solution Concentration, Electrolytic Refining, Tin, Voltage.
Hasil Uji Block Punch Index (BPI) Untuk Memprediksi Nilai Uniaxial Compressive Strength (UCS) pada Campuran Semen dan Pasir Alfisahri Kurniawan; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): 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.v6i1.111431

Abstract

Abstract. The world of mining is closely related to rock because most of the minerals are stuck to or in the rock itself. Therefore we need a method and technique on how to separate the mineral from rocks that are not economical. Because rocks have different properties in each type, in this case rock mechanics is needed. One of the tests for the mechanical properties of rock is the uniaxial compressive strength test. UCS is one of the most important and most widely used rock mechanics parameters in rock engineering. To test rocks, samples from the field are needed in the form of solid rock or coring rock. Sometimes there are rocks with a thin layer, causing the coring to crack or break, causing difficulty in sample preparation. One method that arises for the above problem is the Block Punch Index (BPI) test. The Block Punch Index (BPI) test is useful for testing in the field because the tool is easy to carry and the level of accuracy is better than the Point Load Index (PLI) test. The BPI test and the PLI test are both index tests, the difference is that the PLI uses point loading and the BPI uses block-shaped loading. It can be used to determine rock strength values and even to analyze slope stability based on index values and rock strength. Researchers designed a BPI tool for research that is useful for obtaining a graph of the relationship between UCS and BPI. As a result of the research, the following conclusions were made. First, the design of the BPI tool is made based on several components, including an iron pipe with a thickness of 0.5 cm with a diameter of 6 cm and a height of 9 cm. Solid iron in the shape of the letter T with a block punch size of 18 mm. Solid iron with a diameter of 6 cm, a width of 20 mm for the sample break and a depth of 15 mm. Second, the thickness of the sample according to the tool is a sample with a thickness of 10 mm because there are more valid fractures than samples with a thickness of 7.5 mm and 12.5 mm. Third, from the graph of the relationship between BPI and UCS, to predict the value of UCS, you can use the formula y = -0.5164x2 + 4.7167x + 4,8406Keywords : Rock, BPI, Graphics, UCS, and Mechanical Properties
Karakteristik Batubara Beda Kualitas Berdasarkan Analisis Statistik Dasar di PT. Budi Gema Gempita, Merapi Timur, Lahat, Sumatera Selatan Ria Novi Mayang Sari; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (2021): 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.v6i2.111707

Abstract

Abstract. Pt. Budi Gema Gempita (PT. BGG) is one of the companies engaged in coal mining. Pt. BGG has 4 types of coal that will be done blending process where the coal has different quality based on seam. Seam 10A, 10B, 6A and 6A1 with calorie values of 5073 kcal/kg, 5259 kcal/kg, 6248 kcal/kg and 6110 kcal/kg. The problem that arises from the quality of coal is the difference in the caloric value of coal each time it is tested, either samples in the same location or at different locations. Factors that influence the decline in coal quality are contamination from coal filttor material, coal hauling activities, fine coal, une uniform grain size and weather and climate. From the calculation results obtained a graph of the relationship of influence between the parameters of coal quality and the value of calories that is the relationship between TM and CV, ASH with CV and TS with CV looks linear line that shows a negative relationship, meaning that if the value of TM, ASH and TS is high then the value of calories will decrease. The relationship between VM and CV and FC with CV looks linear line that shows positive relationship, meaning if the value of VM and FC is high then the caloric value will be high as well.Keywords: Basic statistics, coal quality, quality control, front, stockpile

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