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Journals Mining Engineering : Bina Tambang

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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.

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Articles 609 Documents

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Evaluasi Optimalisasi Alat Gali Muat dengan Metoda Overall Equipment Effectiveness (OEE) untuk Memenuhi Target Produksi Batubara Bulan Maret 2018 di Pit 1 Utara Bangko Barat PT.Bukit Asam Tbk, Tanjung Enim Sumatera Selatan Yugo Agustino; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Based on coal production data in North Pit 1, West Banko Mine PT. Bukit Asam, Tbk in March-May 2018, coal production does not reach the target. This is due to the low productivity of the excavator. To find out the improvement potential of a production process and the effectiveness of using an equipment, it is necessary to do an analysis using the Overall Equipment Effectiveness (OEE) method. OEE is known as one of the applications of total productive maintenance programs that have the ability to clearly identify the root of the problem and its causal factors so as to make the improvement effort more focused. After the root cause of the problem is known, it is used multiple linear regression statistical analysis and simple linear regression to determine the relationship and the maximum limits of the obstacles so that production can be achieved. After analysis and improvement with these methods obtained the production of backhoe komatsu PC 400LC, volvo EC 480DL, volvo EC 330BLC exceeded the planned target. However, the OEE value of each excavator still <85% has not reached world-class OEE value> 85%, it can be concluded that the condition of the equipment is not good. It is better to do repairs to standby time and tool breakdown. Keywords: Production, Overall Equipment Effectiveness (OEE), Linear Regression Statistical Analysis, Back Hoe, Standby Time

ANALISIS KESTABILAN LERENG UNTUK MENENTUKAN GEOMETRI LERENG PADA AREA PENAMBANGAN PIT MUARA TIGA BESAR SELATAN PT.BUKIT ASAM (PERSERO) TBK, TANJUNG ENIM, SUMATERA SELATAN Azhary Rahim; Bambang Heriyadi; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

One of few factors that should watch over in open pit mining is geotechnical on rocks lithology in mining area. Since designing of slope geometry there are many factors so thus factors must be input as a parameter to determine slope stability.The type of dominant failures occur in Muara Tiga Besar Area are wedge and planar sliding which caused by discontinuity and sheer slope orientation. This research used stereographic method to determine type and aim of failure based on discontinuity and slope orientation. Stereographic analyses result will conduct and optimal slope angle. Furthermore modeling simulation will be done for single and overall slope to determine its geometry and factor of safety based on geotechnical data such as cohesion and friction angle for each materials.Based on stereographic analysis to overburden A1 single slope angle are conducted 41o , 40o, 42o, 39o, and for lower C is conducted 41o, 42o, 41o, and 42o. in order to get an optimal single slope then it must be conducted from simulation and the result for overburden A1 is 47o as optimal slope angle with factor of safety amount of 1.302 for saturated condition and dry condition 1.727 and for lower C the result of optimal slope angle is 43o, whose factor of safety is 1.305 for saturated condition and 1.886 for dry condition. Afterwards modeling simulation is been done to overall slope in A-A’ and B-B’ section. Factor of safety in highwall area is 1.323 with 27.4o overall slope angle and 155 meters high. In other hands, factor of safety in lowwall area is 1.318 with 25.2o overall slope angle and 192 meters high.

Optimalisasi Produksi Batubara dengan Meminimalisir Coal Loose pada Area Pit Penambangan di PT. Artamulia Tatapratama Cici Wulandari; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Coal Mining Activities at PT. Arta Mulia Tata Pratama is implementing an open pit system. Coal getting activity is one of the mining activities at PT. ATP. Before doing the activities, coal getting coal volume must be known first. It is for knowing how much the actual volume of coal is measured on the floor and roof on material that will be mined. The actual volume is 186.528.0 tons. while the planned plant of the company is 189.525.0 tons. This indicates that no fulfillment 2,997 tons of coal production targets in the month of January 2018.In coal extraction activities can be happend loose (lost / wasted) of coal material. cleaning on the coal floor, coal damage, and slope mismatch. These factors must be assessed to see the contributions of the waste of coal material and analyzed problems. It is aimed to get accurate data and increase the recovery. This method uses the fishbone method that aims to analyze the problems in the causal factors of coal loose. it is found that the loose contribution of coal loose on the clean floor coal is 890,786tons, loose contribution to coal damage is 89.86 tons, and coal loose contribution to slope is 1.824,615tons.Keywords: coal loose, cleaning floor, coal damage , slopes, fishbone

Evaluasi Sistem Penyaliran Tambang Untuk Mendapatkan Sistem Penyaliran Ideal Tahun 2019 di Pit Markona Penambangan Batubara PT. Bumi Karya Makmur Jobsite PT. Cakrawala Dinamika Energi, Desa Air Sebayur, Kecamatan Pinang Raya, Kabupaten Bengkulu Utara Rido Agustian; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Mining operations that used in pit Markona PT. Bumi Karya makmur jobsite PT. Cakrawala Dinamika Energi is open pit method. This method will cause a large basin to form so that it is very potential to become a water reservoir area. Based on the analysis of rainfall data for 2009-2018, the planned rainfall was 110,726 mm/day, with different rainfall intensity in each catchment area with a return period of 2 years. The problem solving method is carried out by analyzing several alternative solutions related to handling the discharge of water that entering the pit, there are alternative I, recommending a diversion channel that can minimize runoff discharge by 0.258 m3/second. Alternative II, recommendations for optimal sump dimensions to accommodate water discharge with a maximum volume of 38.785 m3. Alternative III, recommendation of pump optimization is 5 units to compensate for the dimensions of the existing sump. Based on this alternative analysis, recommend an effective and efficient alternative in pit Markona 2019 is the recommendation of the diversion channel. The settling pond consists of 3 compartments with capacities of each compartment of 7,096.44 m3, 7,525.68 m3 and 6,821.42 m3.Keywords: Mine Drainage, Catchment Area, Pump, Sump, Open Channel, Settling Pond

ANALISIS MENAJEMEN FLEET PADA KEGIATAN PENGUPASAN OVERBURDEN PT. ARTAMULIA TATAPRATAMA DI DESA TANJUNG BELIT, KECAMATAN JUJUHAN, KABUPATEN MUARO BUNGO Fadel Rahman; Sumarya Sumarya; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT.Artamulia Tatapratama is a company engaged in the field of coal mining. PT.Artamulia Tatapratama is located at Tanjung Belit Village, Jujuhan District, Muaro BungoRegency.In the overburden hauling process to the disposal area there is a dumptruk queue atsome point of the road and long stand by time on the loader, this can cause the loader andhauler productivity to be small so that the production target of 1.190.838 bcm / monthoverburden is not reached. This incompetence is due to a combination of unsuitable toolscausing the occurrence of a waiting gateway or a queue of loads when it is loaded by aloading device. One way to achieve the production targets is required appropriate fleetmanagement.Based on the theory of queue, the waiting time for the conveyance at the time will beloaded is 13.62 minutes on fleet 1, 22.88 minutes on fleet 2 and 14.58 minutes on fleet 3.Fleet setting based on the queue theory is 1 unit PC 1250 serving 6 units of HD 465 on fleet1, 1 unit PC 1250 serving 4 units of HD 465 on fleet 2, 1 unit PC 1250 serving 5 units of HD465 on fleet 3.

Analisis Pengaruh Kecepatan Aliran Udara Terhadap Penurunan Temperatur Efektif Pada Alat Simulasi Ventilasi Tambang Bawah Tanah Dhoni Syaputra; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. In underground mines the ventilation system is very important in terms of meeting the air respiratory needs of workers, cleaning dirty air, toxic gases, concentrating dust, regulating heat and humidity in the mine. The problem that often occurs in underground mining, especially in Sawahlunto is the high temperature temperature on the workers' mining front, so that the safety and comfort of the workers is no longer in line with the rules set by the Kepmen 555K/MPE/1995.To meet the standards of effective air and temperature requirements at the mining front, the author tries to conduct an experiment with an underground mine ventilation simulation tool located at the FT .UNP mine laboratory, the experiment was carried out by flowing different air flow velocities using suction fan, blow fan 16 ", fan blows 20" variation of 3 speed without addition of water and fan blows 20 "variation 3 speed by setting the addition of minimum, medium and Maximum water to the underground mine ventilation simulation tool. Based on the data obtained at the measurement points using an Anemometer and Digital Sling Psychometer, the conclusion is that with an average increase in air flow rate of 30%, it can reduce the temperature of the effective temperature by 15%. In this study, the lowest temperature is at point B, in experiments using a 20 "high speed blow fan with setting the maximum water addition, ie 15.40 C (down from 19.80 C, or 28.5% using fan type and the same speed, but without the addition of water) with air flow velocity of 5.22 m / sec, (up from 3.20 m / sec, or 63% using the fan type and the same speed, but without additions water) Keywords: Ventilation System, Temperature, Difference in Air Flow Speed, Water Addition Setting, Effective Temperature

Rancangan Ulang Sistem Penyaliran Tambang Bawah Tanah pada Front Penambangan Batubara Tunnel THC-01 di CV. Tahiti Coal, Kecamatan Talawi, Kota Sawahlunto Anita Lisminiyati; Tamrin Kasim
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Existing pumps can not work optimally on mining C.11 and C.12 because the inlet value obtained is greater than the value of the outlet, the magnitude of the discharge water makes the company's difficulties to deal with it, because there has been no water discharge measurements in detail. Water discharge measurements on the system is difficult because the aquifer is secondary to the absence of a map distribution structure, therefore the measurement was done manually. And now CV. Tahiti Coal haven’t settling pond as a water quality control places accordingly has not met the requirements by the KEPMEN Mining and Energy No: 1211.K/008/M.PE/1995 chapter 9 paragraph 1 and paragraph 2. This type of research belongs to the type of applied research. As the result of data processing discharge ground water totally 5,092 m3/minute. The total of pumps needed to re-draft installation pump Tsurumi pump Hs(Z)3,75S-51 12 units company provided appropriate and required the addition of pump 3 units pumps Tsurumi LH637-HDPE pipes in diameter of 6 inch. Sump 1 is rectangular with dimensions length 2 m, width 1 m, and a depth of 2 m. Sump 2 is a trapezium with dimensions length 10.12 m, width 6.6 m and a depth of 3 m. settling pond is planned 3 compartments, 2 partitions, the depth of the pond 4 m with a capacity of each compartment of 254 m3 and the capacity of entire 761.18 m3.Keywords: Pump, Instalation Pump, Head Losess, Sump, Settling Pond

Evaluasi Teknis Geometri Peledakan untuk Mendapatkan Fragmentasi dan Identifikasi Tingkat Keseragaman Batuan Hasil Peledakan yang Ideal di PT. Allied Indo Coal Jaya, Kecamatan Talawi, Kota Sawahlunto Aulia Defriansyah; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT.Allied Indo Coal Jaya is a coal company located in Talawi District, Sawahlunto City. This company conducted the exploration by open pit and underground mining. In open pit mining, before the start of coal mining, overburden demolition is carried out first with blasting activities. Actual blasting geometry with explosive hole diameter 3inch, 2,873 m spacing, burden 2,8596 m, explosive hole depth 5,633 m, subdrilling 0,183 m, column length 2,979 m, stemming 2,655 m, level height 5,45 m and PF value 0,098 kg/m3. Percentage of rock fragmentation resulting from blasting on actual geometry using split desktop with fraction size ≥50 cm which is 35,17%, and the level of rock uniformity obtained is 2. Therefore, the author tries to propose blasting geometry so that the resulting fragmentation can meet the policies that have been made and the non-uniformity of the rock results can be better. The proposed geometry uses the ICI-Explosive formula with a 2,7 m space, 2,1 m burden, 5,4 m level height, 4,1 m column length, 1,9 m stemming, 0,6 m subdrilling, explosive hole depth 5 meters, and PF 0,20 kg/m3. Based on the geometry design, the proposed percentage of rock fragmentation results from the Kuz-Ram method with a fraction size of ≥50 cm which is 27,35%, while the percentage of rock fragmentation resulting from blasting uses split desktops with fraction ≥50 cm, 19,61%, and uniformity rock obtained is 1,23. Keywords: Overburden, Blasting, Fragmentation, Kuz-Ram Method, Split Desktop.

Kajian Kestabilan Lereng RKAP 2018 Lokasi Penambangan Muara Tiga Besar Utara PT. Bukit Asam Tbk Tanjung Enim Sumatera Selatan Muhammad Irawan; Bambang Heriyadi; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. This research was carried out at MTBU pit mining PT. Bukit Asam Tbk. With the occurrence of landslides on the cross section of Y-Y 'low wall elevation +74 to +62 in the pit area of MTBU PT. Bukit Asam Tbk, it is necessary to do geotechnical studies so that the mining plan can be supported with accurate data, especially in terms of slope stability. To get the optimum geometry recommendations, as well as safety factors (FK) that are in accordance with the plan, we get the initial data Silty Claystone: Content weight (γ) = 22,19 kN / m3, cohesion (c ') = 28,14 kN / m2 and inner sliding angle (ϕ ') = 33,30 °. Silty Sandstone: content weight (γ) = 20.36 kN / m3, cohesion (c ') = 26,38 kN / m2 and inner sliding angle (ϕ') = 25,50 °. Sandy Silt: Contents weight (γ) = 19.67 kN / m3, cohesion (c ') = 32,16 kN / m2 and inner sliding angle (ϕ') = 39,11 °. Recommendation slope geometry: 1. Morgenstren-Price method based on the design results using the Geostudio Slope / W 2007 program, for each section both single slope and overall slope safety factor ≥ 1,25 which means that it is stable or safe. 2. The Hoek and Bray method, 1981 carried out an analysis of the back slope of the single slope high wall elevation +74 to +62 when a landslide occurred using material input properties. After analyzing the slope stability with the analysis parameters behind Hoek & Bray (FK = 0,99), the value (FK = 0.919) is obtained. In saturated conditions, handling is needed to make the slope more gentle where the slope angle is 23,77o with the same height 12 m, so that the value (FK = 1,288) is obtained.Keywords: Slope Stability, Back Analysis, Safety Factor, Slope Geometri, Input PropertiesAbstract.This research was carried out at MTBU pit mining PT. Bukit Asam Tbk. With the occurrence of landslides on the cross section of Y-Y 'low wall elevation +74 to +62 in the pit area of MTBU PT. Bukit Asam Tbk, it is necessary to do geotechnical studies so that the mining plan can be supported with accurate data, especially in terms of slope stability. To get the optimum geometry recommendations, as well as safety factors (FK) that are in accordance with the plan, we get the initial data Silty Claystone: Content weight (γ) = 22,19 kN / m3, cohesion (c ') = 28,14 kN / m2 and inner sliding angle (ϕ ') = 33,30 °. Silty Sandstone: content weight (γ) = 20.36 kN / m3, cohesion (c ') = 26,38 kN / m2 and inner sliding angle (ϕ') = 25,50 °. Sandy Silt: Contents weight (γ) = 19.67 kN / m3, cohesion (c ') = 32,16 kN / m2 and inner sliding angle (ϕ') = 39,11 °. Recommendation slope geometry: 1. Morgenstren-Price method based on the design results using the Geostudio Slope / W 2007 program, for each section both single slope and overall slope safety factor ≥ 1,25 which means that it is stable or safe. 2. The Hoek and Bray method, 1981 carried out an analysis of the back slope of the single slope high wall elevation +74 to +62 when a landslide occurred using material input properties. After analyzing the slope stability with the analysis parameters behind Hoek & Bray (FK = 0,99), the value (FK = 0.919) is obtained. In saturated conditions, handling is needed to make the slope more gentle where the slope angle is 23,77o with the same height 12 m, so that the value (FK = 1,288) is obtained.Keywords: Slope Stability, Back Analysis, Safety Factor, Slope Geometri, Input Properties

Optimalisasi Produksi Alat Muat dan Alat Angkut dengan Metode Overall Equipment Effectiveness (OEE) Pada Pengangkutan Overburden Di Pit Barat PT. Artamulia Tata PratamaSite Tanjung Belit, Kabupaten Muaro Bungo, Provinsi Jambi Sadam Husean; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstrack. Based on the production data of overburden stripping in western Pit PT. Artamulia Tatapratama in January-Februari 2018, overburden stripping production did not reach the target. This is due tothelow productivityof theexcavator.To find out the improvement potential of a production process and the effectiveness of using equipment, it is necessary to do an analysis using the Overall Equipment Effectiveness (OEE) method.. After knowing the root of the problem, multirple linear regression statistical analysis is used to determine the relationship and the maximum limits of the obstacles so that the production can be achieved. After doing the analysis and improvement with these methods, the production of the komatsu1250SP-8R excavator exceeded the planned target. However, the OEE value of eaoch excavator still <85% and has not reached the world-class OEE value> 85%, it can be concluded that the condition of the equipment is not good. It is better to do repairs to standby time and tool breakdown. Keywords: Production, Overall Equipment Effectiveness, multiple linear regression statistical analysis, Fishbone Method, komatsu 1250SP-8R excavator

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