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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 Stabilitas Lereng Pada Kegiatan Galian Clay Pada Tambang IUP OP Jumaidi, Kelurahan Gunung Sarik, Kecamatan Kuranji, Kota Padang, Sumatera Barat Muhammad Reyhand; 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.v7i2.118990

Abstract

IUP OP Jumaidi is one of the mining business licenses engaged in mining, especially clay mining and trading, which is located in Gunung Sarik Village, Kuranji District, Padang City, West Sumatra Province. Based on field observations at the IUP OP Jumaidi, the authors found that there are manufactured slopes or former mining slopes consisting of slope-forming material, namely clay, with a slope geometry of 44 meters high and a slope of 45o. The existence of mining activities, such as excavation, and transportation of material on the slopes forms the final slope (ex-mining slope) whose stability is not yet known, so it is feared that there will be a landslide hazard. The collapse of the slope in the horizontal plane adjacent to the access to the mining deposit area in 2022 could disrupt mining activities in the IUP OP Jumaidi. The method used in this study is the Bioshop Simplified with a standard safety value of > 1.3. The results of testing the physical properties and mechanical properties of the slopes are the natural bulk density of 16.33 kN/m3, the dry bulk weight of 12.45 kN/m3 and the saturated weight of 17.25 kN/m3. Meanwhile, the cohesion value is 41,256 kN/m3 and the internal shear angle is 25,09o. Based on the parameter values of the physical and mechanical properties of soil in the laboratory, the safety factor value according to the Bioshop Simplified in natural conditions is 1.027, while the safety factor value of the Hoek and Bray in dry conditions is 1.17 and for saturation condition of 0.93. The results showed that the FK value obtained a single slope geometry recommendation with a slope of 35o with a safety factor (FK) of 1.377 in natural conditions according to the bioshop. While the value of the safety factor (FK) in the saturated condition is 1.350. And the double slope according to the Bishop method, the factor of safety (FK) in the natural state is 1.341, and the value of the safety factor (FK) in the saturated condition is 1,309.recommended to use a double slope slope with a bench width of 16 meters and a slope of 39o. The volume to be peeled is 29034.79 bcm.
Analisis Balik Kestabilan Lereng Pada Pit Eagle 1 PT. Bumi Karya Makmur Jobsite PT. IPC Bantuas, Samarinda, Kalimantan Timur deki Irawan; Yoszi Mingsi Anaperta
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.v7i3.120316

Abstract

PT. Bumi Karya Makmur is one of the companies engaged in coal mining contractors. PT. Bumi Karya Makmur is a mining contractor trusted by PT. International Prima Coal as the holder of IUP OP (Production Operation Mining Business License) to carry out coal mining activities which located in Bantuas, Palaran District, Samarinda City, East Kalimantan Province. Mining activity is carried out using the Open Pit Mining method. In May 2021, a landslide occurred on the western slopes of Pit Eagle 1 which have made  disrupted mining activities because the front work was buried by slope of landslide material. The landslide was caused by the actual geometry of the slopes in the field which is too steep around 80° for single slope and there were puddles of water on the slopes that makes the slope in the saturated state. The slope stability analysis of the western area at Pit Eagle 1 used the Probabilistic Monte Carlo method, where the initial soil data were: cohesion (c) = 93,272 kN/m2 and internal shear angle (ϕ) = 20,122˚; sandstone: (c) = 87,886 kN/m2 and (ϕ) = 28,014; mudstone: c = 129.983 kN/m2 and = 31,317˚. Analysis the value of the factor of safety (FK), the probability of landslides (PK), and slope geometry recommendation using the Bishop Simplified method. The results of this research are, firstly, the slope safety factor value at Pit Eagle 1 in the saturated state before the landslide is 1.253 with a landslide probability value of 0%, in the semi-saturated state with FK value is 1.602 with a landslide probability value of 0% and the dry state with a FK value of 1.802 with a probability of avalanche 0%. Secondly, back analysis on the Pit Eagle 1 landslide area resulted in the value of the geotechnical parameter Soil (C) = 88.6 kN/m2 (ϕ) = 20,122o; Sandstone: (c) = 87,886 kN/m2 and (ϕ) = 28,014o; Mudstone (C) = 69.65 kN/m2 (ϕ) = 23.316o. Third, the geometry recommendation of slope at Pit Eagle 1 with an overall slope height of 40 meters, that namely with an overall slope angle of 52˚ with a single slope height of 8 meters, a bench width of 5 meters, and a single slope angle for Soil and Sandstone materials, while for a single slope angle for Mudstone materials is 70°.
Analisis Penerapan JSA (Job Safety Analysis), JHA (Job Hazard Analysis) dan SOP (Standard Operasional Procedure) Sebagai Perangkat Keselamatan dan Kesehatan Kerja pada Kegiatan Produksi Pabrik Di PT. Sumbar Calcium Pratama, Kecamatan Lareh Sago Halaban, Kabupaten Lima Puluh Kota. Yudith Ananda Pradipta; Fadhilah S.Pd, M.Si
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.v7i2.119066

Abstract

Abstract. At PT. Sumbar Calcium Pratama, several violations of the existing JSA ( Job Safety Analysis) , JHA ( Job Hazard Analysis) and SOP (Standard Operational Procedure) were found. There are still many workers who work in dangerous work positions, use unsafe tools, and there are still many workers who work without using personal protective equipment or PPE that has been provided by the company. The purpose of this study was to obtain an overview of the level of knowledge, attitudes, and actions on occupational safety and health by workers in the application of JSA (Job Safety Analysis), JHA (Job Hazard Analysis) and SOP (Standard Operating Procedures) as occupational safety and health tools at PT. Sumbar Calcium Pratama, Analyzing the application of JSA (Job Safety Analysis) and JHA (Job Hazard Analysis) at PT. West Sumatra Calcium Pratama, Analyzing the application of SOP (Standard Operating Procedure) at PT. West Sumatra Calcium Primary. In this study, theory is combined with field data, so that the results obtained will be analyzed to further produce a recommendation. Based on the results of the research conducted, it can be concluded the following things, first at PT. Sumbar Calcium Pratama has implemented JSA (Job Safety Analysis), JHA (Job Hazard Analysis) and SOP (Standard Operational Procedure) but has not been maximized, the results of the questionnaire regarding the application of JSA (Job Safety Analysis), JHA (Job Hazard Analysis) and SOP (Standard Operational Procedure) , the results of the knowledge purification production activity questionnaire are 82.22% with a very good value range, the results from the questionnaire purification production activities attitude is 80.83% with a good score range, the results of the action section of the purification production activity questionnaire are 83.05% with a very good value range, the results of the knowledge factory production activity questionnaire are 83.34% with a very good value range, the results From the attitude section of the factory production activity questionnaire, it was 84.15% with a very good score range, and the results of the action factory production activity questionnaire were 87.09% with a very good score range.
Estimasi Sumberdaya Batubara Pada Pit Timur, PT. Allied Indo Coal Jaya, Kota Sawahlunto, Sumatera Barat Muhammad Faiz; 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.v7i2.119014

Abstract

PT. Allied Indo Coal Jaya conducts mining using open pit mining and underground mining methods. With coal prices relatively rising, the company plans to expand mining area in Eastern Pit. The references in the pit expansion plan and strategic mining plan is to estimate and model resources. The estimation of resources at PT Allied Indo Coal Jaya uses a comparison of the Geostatistics method (OrdinaryaKriging) with the Conventional (Polygon) method. Which Geostatistics method is more favored because it considers spatiality. Ordinary Kriging tends to produce block estimates that are more evenly distributed or less varied than the actual levels. The methode Polygon is a conventional method and is commonly applied to deposits that are relatively homogeneous and have a simple geometry. From the results of estimating and modeling coal resources in the Pit Timur of PT Allied Indo Coal Jaya, the OrdinaryaKriging method provides total coal resource of 5,678,887.5atons and the Polygon method provides total coal resource of 6,537,342atons. Meanwhile, in the comparison of resource models from the two methods with original situation using correlation analysis, the value of the coefficient of determination in the Ordinary Kriging method was obtained more large compared to Polygon method.
Optimalisasi Biaya Produksi Menggunakan Metode Liniear Programming Dalam Rangka Pengupasan Overburden di KUD Sinamar Sakato, Sinamar, Kabupaten Dharmasraya, Provinsi Sumatera Barat M Sahrudin; Rudy Anarta; Adree Octova; Admizal Nazki
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.v7i3.120576

Abstract

The problem faced by KUD Sinamar Sakato at this time is the occurrence of Sliding Back Filling material in July 2021 from PIT 1 IUP PT SLN which borders KUD Sinamar Sakato. Then in July 2022, Fleet Loading Point Overbuden Removal was added which was originally 4 Fleet to 5 Fleet, of which 3 Fleet only focuses on the sliding material back filling area which is still happening today. Which is where the remaining 2 Fleet focuses on the Front Loading Coal area, and also not achieving the overburden production target in the Pit Pyramid in June-July 2022 of 150,000 BCM while the actual is 141,500 BCM/month. This research was conducted to calculate and analyze the optimal number of digging and loading equipment according to the production target and to get the minimum loading and hauling costs. The optimization method used is the match factor method and the linear programming method using POM Software for Windows, Lingo. and manual calculations using the simplex method. Based on calculations using POM for Windows software, lingo and Linear Programming Simplex Method, it is obtained that the number of dump trucks planned is 12 units, which previously was 15 units. then the optimal production obtained for stripping overburden material is 156.459 BCM/month from 150,000 BCM/hour with a production cost of 0.85 USD/BCM from 1.11 USD/BCM.
ANALISIS PENGARUH GEOMETRI JALAN PIT MAJAPAHIT BESERTA TOTAL RESISTANCE TERHADAP SPEED DAN FUEL RATIO KOMATSU HD 785-7 PT. KALIMANTAN PRIMA PERSADA SITE PCN DESA SEBAMBAN KEC. SUNGAI LOBAN KAB. TANAH BUMBU KALIMANTAN SELATAN Lukman Firmansyah; Yoszi Mingsi Anaperta
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.v7i3.119974

Abstract

Abstract. PT. Kalimantan Prima Persada is a coal mining company, one of its working locations is PT. PCN (Prolindo Cipta Nusantara) The mining pit is named the Majapahit Pit. At the Majapahit Pit, a new road was built that functions for the overburden transportation road, namely Jalan Arjunasastra and Jalan Putri Gunung Buih.Many road segments have non-ideal road geometry, based on speed data of Komatsu HD 785-7 loaded and unloaded equipment it was found that 35.48 km/hour and 12.01 km/hour. This is not in accordance with the company's target, where the target speed of the HD 785-7 conveyance is 17 km/hour and 50 km/h empty. As a result of not achieving the speed, it will affect the production of transportation equipment in March-April, based on data on the production of Komatsu HD 785-7 transportation equipment, which is actually 231.860 Bcm but the company's target is 288.000 Bcm. As a result of not achieving production, it affects the value of the fuel ratio of the conveyance. Based on fuel ratio data, the actual conveyance is 0.68 Bcm/hour but the company's target is 0.54 Bcm/hour.The effect of total resistance on speed is inversely proportional, meaning that if the total resistance increases, the speed decreases. And the effect of total resistance on the fuel ratio is directly proportional, meaning that if the total resistance increases, the fuel ratio increases. This is in accordance with the results of the improvement. After repairs were made, it was found that the speed value for the loaded condition increased to 17.91 Km/hour and the empty condition became 50.05 Km/hour so that it increased by about 40%, for the production of transportation equipment it increased to 294,307 Bcm/hour so that it rose 23,52% and fuel ratio decreased to 0.54 Bcm/hour so that the fuel ratio decreased by 25,93%.
STUDI PENERAPAN SISTEM MANAJEMEN KESELAMATAN PERTAMBANGAN PT. DEMPO MAJU CEMERLANG Dipo Hadi Rahmawijaya; Fadhilah Fadhilah
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): 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.v8i1.121883

Abstract

PT. Dempo Maju Cemerlang is an underground gold mining company located in Salido, Kec. Iv Jurai, kab. South Coast, Prov. West Sumatra. PT. Dempo Maju Cemerlang has not assessed the implementation of the SMKP Mining Safety Management System in accordance with KEPMEN ESDM 1827/MEM/30 2018. Therefore, it is necessary to assess the implementation of the SMKP Mining Safety Management System, Work Accident Statistics, Frequency Rate, Severity Rate and Pareto Diagram. This study aims to find out how many percent of companies in implementing the Mining Safety Management System SMKP, for the assessment using a questionnaire based on KEPMEN ESDM 1827/MEM/30 2018. The results of the questionnaire on the implementation of the Mining Safety Management System SMKP for Policy Elements 94.7%, Planning Elements 100% , Elements of Organization and Personnel 93.3%, Elements of Implementation 100%, Elements of Evaluation and Follow-up 100%, Elements of Documentation 100%, Elements of Management Review 100% and for Work Accident Statistics Frequency Rate 10.54, Severity Rate 0.
Desain Optimalisasi dan Penjadwalan Produksi Penambangan Batubara Pada Pit Granit Extend Seam 6 PT. Cipta Bersama Sukses Desa Beji Mulyo Provinsi Sumatera Selatan Ravilqi Medri; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): 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.v8i1.122176

Abstract

PT. Cipta Bersama Sukses has two Granit Extend pit mining locations: seam 5 and seam 6. On August 8, 2022, an avalanche occurred which covered the seam 5 mining area so that coal-getting activities or coal production could not be continued. because this condition was considered unsafe and inefficient. Then the mining plan changed to the seam 6 area, So it is necessary to design the optimization of the seam 6 area, design the coal getting for September and October 2022, as well as production scheduling so that mining activities are well planned. Based on the optimization design in August 2022, the seam 6 area obtained 43.248,117 tons of coal and 304.293 bcm of overburden, and the pit design in September 2022 obtainedan  overburden of 306.198 bcm overburden and 93.017,183 tons of coal, while in October 2022, overburden was obtained of 323.053 bcm and 102.160,480 tons of coal. To achieve the production target, production planning is required which aims to calculate unit requirements for mining activities. Based on the analysis, the number of fleets needed for overburden removal activities is 6 fleets consisting of 3 fleets with 4 DT units each, 1 fleet with 2 ADT units and 2 fleets with 3 DT units each. The amount of overburden production is 310,380.66 bcm Whereas for coal-getting activities, 1 fleet consisting of 3 DT units is needed with a total production of 47.178,60 tons.
Evaluasi Kemampuan Alat Gali Muat untuk Pencapaian Target Produksi Limestone Menggunakan Metode Overall Equipment Effectiveness (OEE) pada Bukit Karang Putih PT. Semen Padang Fachri Diwanda; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): 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.v8i1.122157

Abstract

Observation data for limestone production in the PNBP block of PT. Semen Padang did not reach the target in August 2022 due the low effective working time of the excavator, which was 278.7 hours/month for the Hitachi EX 2500 and 296 hours/month for the Caterpillar 6030 Excavators out of 558 hours/month available working time. Analysis of the productivity of working hours of tools needs to be done to overcome these problems,, one of which is the Overall Equipment Effectiveness (OEE) method to measure tool performance and fishbone diagrams to identify obstacles during production. The results showed that the actual productivity was 601,527 tons/month. Fishbone diagram analysis shows that there are inhibiting factors that cause high loss time, including method, equipment, environment, and human factors. After improving the standby delay time value of the Hitachi EX 2500 (EH 06) Excavator and Caterpillar 6030 (EC 03) excavator, the total loss time was reduced to 28.8 hours/month and 29.2 hours/month, respectively. increased tool uptime. Thus, the OEE value increased to 40% and 43%. Thus, overall limestone production increased by 1,317,693 tons/month, which means the target has been reached. The increase in the OEE value is still low when compared to world class standard OEE values, at 85% and still needed improvement.
Analisis Pengaruh Speed Terhadap Fuel Ratio Alat Angkut Sany SKT90S-35 Pada Kegiatan Pengupasan Overburden Pit South di PT. Anugerah Covindo Indonesia Heri Permana; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): 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.v8i1.122165

Abstract

PT. Anugerah Covindo Indonesia is a coal mining service company as a contractor in the open pit area, one of its jobsites is GPU (Gorbi Putra Utama) Pit South Beringin II Village, Rawas Hilir District, North Musi Rawas Regency, South Sumatra Province. Based on the problems in the field, it is known that there are not ideal road geometries such as straight road widths and bends which are still lacking in grade which exceeds 12%. With the condition of the road geometry that is not ideal, it will affect the total resistance of the vehicle so that it will affect the speed of the conveyance that crosses it which in turn will cause the productivity of the transportation equipment and the value of the fuel ratio of the transportation equipment to increase. This study aims to analyze how the ideal road geometry is on the road, analyze the actual total resistance value and after repairs and analyze the speed value and fuel ratio value of the conveyance both in actual conditions and after repairs have been made. The type of research used is applied research which aims to find solutions to certain problems with data in the form of qualitative and quantitative data. From the results of the calculations, the minimum width on straight roads is 12.5 m, on bends is 17.545 m, and the road grade must be reduced with a maximum grade value of 12%. The total resistance value has decreased so that the productivity of the transportation equipment has increased and the fuel ratio value of the SANY SKT 90S transportation equipment has decreased. The actual productivity of the transportation equipment was 117,260, BCM/month increased to 160,256.7 BCM/month, while the fuel ratio for the actual condition of the transportation equipment was 0.48 ltr/bcm, which decreased to 0.35 ltr/bcm.

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