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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 Manajemen Fleet Pada Kegiatan Pengupasan Overburden Bulan Oktober 2019 di Pit 2 Dengan Penerapan Metode Quality Control Circle (QCC) Pada Optimalisasi Loss Time di Satuan Kerja Penambangan Swakelola PT. Bukit Asam Tbk, Sumatera Selatan. Micco Syaputra; Yoszi Mingsi Anaperta
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.v5i5.110266

Abstract

Abstract. PT. Bukit Asam Tbk is a coal mining company in Indonesia and is a state-owned company (BUMN). PT. Bukit Asam Tbk applies an open mining system where the mining material is coal. The mining methods used are conventional mining and continuous mining methods. In October 2019 the Company Work Plan and Budget (RKAP) for overburden excavation at the Self-managed Mining Unit at pit 2 amounted to 1,200,000 Bcm, while the realization of the production of the Komatsu PC 3000E-6 Shovel Excavator in overburden stripping in the pit 2 months October 2019, namely 886,148,194 Bcm. And the realization of the production of Rigid Truck Belaz 75135 for overburden stripping at pit 2 in October 2019 was 561,839.582 Bcm.The low production of overburden stripping is due to the less than optimal effective working time due to the standby time for the Shovel Excavator Komatsu PC 3000E-6 and Rigid Truck Belaz 75135 due to the high dust loss time in the mining area as much as 301.99 hours. The purpose of this research is to optimize overburden production in mining by analyzing the suitability of mechanical devices using the match factor method and optimization of improvements using the quality control circle.Keywords : Coal Mining, Overburden, Loss Time, Dust, Shovel Excavator, Rigid Truck, Optimization, Match Factor, Quality Control Circle
Evaluasi Geometri Peledakkan Berdasarkan Pengaruh Perhitungan Blastability Index Untuk Mendapatkan Fragmentasi Ideal Pada Front Penambangan Di PT. Ansar Terang Crushindo 1 Pangkalan Koto Baru Kabupaten Lima Puluh Kota Sumatera Barat. Naufal Permanda; 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.v6i1.111748

Abstract

Abstract. Geometric Determination of blasting and powder factor must show the rock mass characteristics and local geological conditions. Alternative geometry experiments were carried out to solve the resulting blasting problem. The alternative geometry design is determined using rock mass characteristics based on the Lilly Blastability Index, in the form of rock mass description, joint plane spacing, joint plane orientation, specific gravity influence and hardness. Based on the weighted results of the blasted rock mass, the Blastability Index value is 58.075. From the value, good blasting geometries are 3 inch boreholes, 2 m burden, 3 m spacing, 3.2 m blast hole, 0.2 m subdrilling, 3 m level height, 2.17 m steaming and material filling and 1.03 m explosive, 0.22 kg / m3 powder factor. From the results of the proposed geometry based on the lilly equation, the percentage of boulder desired by the company and the use of explosives is lower than the previously applied geometry.Keywords: rock mass characteristics, blastability index, geometry, balasting, fragmentation
PEMBUATAN PROTOTIPE ALAT PENCUCIAN BATUBARA DENGAN METODE FLOTASI Tito Alfredo; 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.v6i2.111896

Abstract

Abstract. Coal washing can be done by various methods. One method of washing that is quite easy to do is by flotation method. Coal washing is usually done in large companies with tools that tend to be large and costly. In the mining laboratory of Universitas Negeri Padang there is no coal leaching tool using flotation method. It is expected that with the manufacture of this tool can be a reference for the practice of washing coal with flotation methods in the mining lab of Universitas Negeri Padang.The tool functions normally and the coal sample has undergone a washing process so that a froth arises indicating the coal has been washed because it is lifted with froth. From the performance of the tool and the results obtained from the sample before and experienced washing where there was a reduction in sulfur levels in the sample from 0.378 % Adb decreased after washing to 0.235%Adb. There was a decrease in sulfur content of 0.143 %Adb. From the performance of the tool and the results obtained from the sample before and experienced washing where there was an increase in caloric value Data sample value of coal calories before washing obtained by 7689.87 Kcal / g, after washing there was an increase in caloric value to 8414.30 Kcal/g. there was an increase in caloric value of 724.43 Kcal/g. Keywords: flotation, washing, prototype, tools, coa
Kajian Teknis dan Ekonomis Peledakan di Pit 1 PT. Pebana Adi Sarana Kabupaten Lima Puluh Kota Sumatera Barat Fadhlan Assany; 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.v6i1.111769

Abstract

Abstract. PT. Pebana Adi Sarana is located in Jorong Mudik Pasar Manggilang, Pangkalan Koto Baru District, Lima Puluh Kota Regency, West Sumatra Province with an area of 54.74 Ha and has an estimated reserves of andesite stones of 3.925.900 Tons. During the study, the results of blasting were 30% -40% while the desired target was 15% -20%. The purpose of this study is to improve the blasting results in the field by comparing the actual blasting results with the proposed blasting and economic studies by making a comparison of the proposed results against the costs incurred in blasting activities and the use of a breaker. The blasting geometry recommendation of the research method is based on the theory of R. L. Ash and C. J. Konya. The results of the study using actual geometry data showed that the fragmentation results of the Split desktop were 33% and the cost of blasting per tonnage was IDR 6,891/ton. Meanwhile, based on the proposed geometry design with the theory of R. L. Ash and the theory of C. J. Konya, the fragmentation results using Split desktop were 19.37% and the cost of blasting per tonnes was IDR 5,294/Ton. The difference between the cost of the actual geometry and the test geometry is IDR 1.596/TonKeywords : Blasting Geometry, Blasting Fragmentation, Theory of R. L.Ash and C. J. Konya and Blasting Costs
Analisis Kestabilan Lereng pada Lereng Akhir Penambangan PT. Koto Alam Sejahtera Kecamatan Pangkalan Koto Baru Kabupaten Lima Puluh Kota Provinsi Sumatera Barat ALVIN IRANTO PURNAMA; 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.v6i1.111687

Abstract

Abstract. PT. Koto Alam Sejahtera is a private company engaged in the mining of andesite stone with open pit mining with quarry method. The mining activity forms a final slope whose stability is not yet known. In addition, the presence of weak areas on the final mining slope can weaken the rock mechanical parameters and there are fractures and water seepage on the slope which has a slope angle of 81 ° with a slope height of 12.343m. Therefore, it is necessary to have an analysis of the stability of the slopes at that location to prevent landslides. In this study, the analysis used was kinematic analysis with dips’s software and slope stability analysis using Morgenstern-Price method. Based on the results of kinematic analysis, the percentage value of potential landslides that occurred at the research location was the type landslide which had a landslide Flexural Toppling potential of 18,27%. Based on the analysis of the safety factor (FK) of the slope using Morgenstern-Price method, it shows that the final slope of mining is in a critical condition (FK <1.0) with a FK value of 0.894 in saturated conditions. Therefore, changes in slope geometry were made to obtain safe conditions (FK> 1.3) by reducing the slope angle from 81 ° to 60 ° so that the FK value was 1.326.Keywords: Quarry mining, kinematic analysis, Morgenstern-Price method, FK (safety factor)
Kajian Teknis Lemparan Flyrock pada Pit 303 Jembayan PT Pamapersada Nusantara Distrik Baya Kabupaten Kutai Kartanegara Kalimantan Timur Asep Triyanda; Raimon Kopa
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.v6i2.111709

Abstract

Abstract. To consider the safe distance of the tool when blasting requires analysis and prediction of flyrock throw. Methods for predicting flyrock throws are Richard & Moore's empirical method and Ebrahim Ghasemi's dimensional analysis. The observation results of the blasting activity were 36 times, and the farthest was 98.87 m of flyrock. The research objective is to analyze the blasting geometry design to better control the flyrock throw, so that the target safe radius of the tool can be reduced from 200 m to 100 m. Prediction of actual flyrock throw using the empirical method Richard & Moore obtained a face burst deviation of 32.68 m, 25.43 m cratering, and 15.12 m rifling, with an error percentage of 69.93%, 30.38%, and 30.64% . Meanwhile, the deviation of Ebrahim Ghasemi's dimensional analysis method is 6.23 m with an error percentage of 9.85%. Based on statistical analysis, stemming has a very strong effect on flyrock throwing, namely 71.40%. Ebrahim Ghasemi's dimensional analysis method is better to predict the actual flyrock throw. To control the actual flyrock throw, a minimum stemming is recommended according to the diameter and depth of the blast hole based on the scaled depth of burial equation, and considering the prediction of a maximum flyrock throw of 50 m and a powder factor not to exceed 0.17 kg / m3. By using these recommendations the safe radius of the tool can be reduced to 100 m with the resulting flyrock safety factor not approaching or exceeding the safe radius of the target, which is 100 m.Keywords: Flyrock, Scaled Depth of Burial, Safe Radius, Stemming
Pembuatan Video Pembelajaran Untuk Menciptakan Pembelajaran Kontekstual IPA SMP dan MTs Kota Payakumbuh Dimasa Pandemi Covic-19 Amali Putra; Yurnetti Yurnetti
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.v5i5.110788

Abstract

Abstrak – Dalam rangka meningkatkan profesionalitas guru-guru yang terhimpun dalam wadah MGMP IPA SMP Kota Payakumbuh agar kualitas pembelajaran daring/online dimasa pandemi Covid-19 tidak menurun dibandingkan pembelajaran lurung/offline dalam keadaan normal, telah dilakukan Program Kemitraan Masyarakat(PKM) berupa pelatihan pembuatan video pembelajaran dalam bentuk MP4 sebanyak 5 kegiatan pada tanggal 2, 9, 16, 30 Oktober dan 14 November 2020. Berdasarkan data yang diperoleh dari awal sampai akhir kegiatan menyimpulkan bahwa:1)Peserta mendapatkan pengetahuan dan ketrampilan dalam mengembangkan video pembelajaran. 2) Kualitas kegiatan pelatihan berada pada kategori baik berdasarkan indikator indikator : a) tingkat partisipasi kehadiran peserta pelatihan rata-rata 87,2%; b) jumlah produk video pembelajaran yang dihasilkan sebanyak 63,6 % dari target yang direncanakan; c) berdasarkan data angket persepsi guru, kegiatan pelatihan memberikan manfaaat karena sesuai dengan permasalahan guru, dan dapat mengatasi kesulitan guru dalam merancang video pembelajaran dan peserta pelatihan berniat untuk tetap mengembangkan video pembelajaran setelah mengikuti pelatihanKeywords — Covid-19, pembelajaran online, video pembelajaran, kontekstual, profesionalitas guru, IPA SMP
Aplikasi Metode Job Safety Analysis Dan Pendekatan HIRADC Untuk Analisis Risiko Keselamatan Dan Kesehatan Kerja Pada Penambangan Bawah Tanah Bijih Emas Pt. Dempo Maju Cemerlang Pesisir Selatan Nia Kurniasih; Fadhilah Fadhilah; Andri Prihatanto
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.v6i2.111699

Abstract

Abstract. PT. Dempo Maju Cemerlang is one of the gold mining companies that implement underground mining system. Because judging from the risk management there are still potential hazards in the company, this study aims to find out the potential hazards in some areas of work that can cause accidents, statistics of work accidents frequency rate and severety rate,as well as reveal hazard control in the form of Job Safety Analysis (JSA) and Hazard Identification, Risk Assessment And Determining Control (HIRADC). Data collection techniques using questionnaire questionnaires, interviews, and observations of work activities. The results of analysis of the risk level of the sub-criteria that often occur in the overall at PT. Dempo Maju Cemerlang based on the percentage calculation is 26% pale finger discoloration during jeck legoperation, 10% hit in restricted areas, pinched tools, and 78% muddy or flooded roads. Work accidents with a frequency rate in 2019 of 44.18 and a severity of 166.55. JSA and HIRADC are used to identify work hazards in the main hole SOD (South Ore Drift) in the work of drill machine jack leg, rock bolt installation, railmounting, shovel rocker operation, locomotive operation and Granby.Keywords: Jack leg drillmachine, rock bolt installation, railmounting, shovel rocker operation, locomotive operation and Granby.
Kajian Geometri Peledakan untuk Mendapatkan Fragmentasi Yang Optimal Pada Penambangan Batu Andesit PT. Atika Tunggal Mandiri Kabupaten 50 Kota Provinsi Sumatera Barat Yuri Purwa Agung Hs; Raimon Kopa
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.v5i5.109985

Abstract

Abstract. Andesite Mining at PT. Atika Tunggal Mandiri with a surface mining system with the Quarry mining method. The percentage of boulder-sized blasting fragmentation produced at this time in the field is 38.19%. As a result, the diggability of the digging tool is not optimal and the excavation tool productivity target planned by the company is 80 bcm / hour not achieved. This study aims to design a new blasting geometry to obtain optimal fragmentation results so that loading activities are effective and productivity targets are achieved. The research method was carried out by providing recommendations for blasting geometries based on R.L. Ash and C.J. Konya and carried out the application of one of the blasting geometry designs in the field so that the optimum blasting geometry design was obtained from one of the blasting geometry designs to be applied in the future for the company. The basis of the results of the application in the field to one of the proposed blasting geometry designs, namely: Burden: 2 m, spacing: 2 m, Stemming: 1.4 m, Subdrilling: 0.6 m, level height: 3 m, blast hole depth 3.5 m, powder coloum: 1.5 m, and powder factor: 0.68 kg / m3 where the fragmentation of the boulder size resulting from the split desktop software analysis is 0% and digging time is 9.61 seconds.Keywords : Blasting Geometry, Blasting Fragmentation, Digging Time, Bucket Fill Factor
Analisis Optimasi Produktivitas Alat Gali-Muat (Excavator) Dan Alat Angkut (Dump Truck) Pada Pengangkutan Andesit Untuk Mengoptimalkan Produksi Di PT. Koto Alam Sejahtera Afdal Zikri; 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.v6i1.111804

Abstract

Abstract. PT Koto Alam Sejahtera is a private mining company engaged in the andesite mining business in Koto Alam, Lima Puluh Kota Regency. In andesite mining activities, PT. Koto Alam Sejahtera uses a series of excavators and dump trucks to move material from the loading point to the waste dump. In the process of transporting andesite to the crusher there is a queue of dump trucks and long stand-by times at the dump trucks, this can cause the productivity of the tools to be small so that the Andesite stone production target of 80,000 tons / month is not achieved. This is due to the inefficient working time of mechanical tools. This production target was not achieved due to the inappropriate combination of transportation equipment (Mitsubishi Fuso 220 PS) and loading equipment (Hitachi ZX350) which resulted in queues or waiting times for transportation vehicles. One of the ways to achieve the production target requires appropriate fleet management. Based on research that was carried out in October 2019, the productivity of the Hitachi ZX-350 excavator was 344,9378 tons / hour and the productivity of the Mitsubishi Fuso 220 PS dump truck was 78,10247 tons / hour. The composition of the equipment used is 1 unit of excavator serving 5 units of dump trucks, causing the combination of transportation and loading factors to be inappropriate. To overcome the long queue time, the composition of the MF = 1 tool was improved. Fleet settings are based on the queuing method, namely 1 unit of digging equipment and 4 units of transportation equipment with a production of 83.101,03 tons / month. Keywords: Flee Management, Queuing Method, Match Factor, Production, Productivity, Dump Truck

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