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Journals Mining Engineering : Bina Tambang

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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.

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Articles 609 Documents

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Analisis Efisiensi Teknik Peledakan Top Air Deck Terhadap Fragmentasi dan Digging Time Alat Gali Komatsu PC 2000 pada Pembongkaran Overburden Di Pit Badak PT Multi Harapan Utama, Kalimantan Timur Josep L. Marpaung; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 4, No 4 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Demolition by blasting method is a method commonly used in the mining operations in order to obtain large productivity. Generate rock blasting activities into a certain fragmentation size, so it can be easier to do excavation and transportation. The effectiveness of blasting activities as a benchmark of the success of these explosions which are expected to have appropriate fragmentation and shorten the time of excavation, while the blasting efficiency is a measure of economical blasting activities. This study aims to assess the success of the top air deck blasting technique, and to estimate the optimum length of air decking on Pit Badak, PT Multi Harapan Utama. The research data consisted of powder factor, fragmentation of blasting and digging time excavator unloading. The method research is trial and error as well as statistical modeling. From the analysis conducted for blasting obtained with normal charge the percentage amount of the boulder is 2,29%, digging time 12.73 seconds, and used powder factor of 0.17 kg/bcm. Blasting with top air deck application of techniques derived boulder percentage of 7.59%, digging time 12.33 seconds, and powder factor of 0.14 kg/bcm. The optimum length of the air column (air deck lenght) is 1 meter with the percentage of boulder 7%, digging time 12.30 seconds, with the optimum powder factor 0.1450 kg/bcm. Top air deck techniques has reduce the use of explosives by 10-26%.

Pengaruh Jarak Angkut dan Grade Jalan Terhadap Biaya Operasional Alat Angkut dari Front Penambangan Menuju Dumping Area untuk Efisiensi Biaya Produksi pada Penambangan Batu Kapur Bulan Oktober 2019 di PT. Semen Padang Vela Yulia; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Semen Padang uses an open mining system using the Quarry method, a heavy a heavy equipment used by PT. Semen Padang is a HD komatsu 785-7 conveyance for transporting limestone from the front to the crusher. fuel is a contributor to mining operating costs the biggest. The hauling distance from the PNBP 9 front to dumping around 2,1 Km i, and the road grade exceeds the company standard, the company standard for grade is 10%, while there are 17,8% of real estate in the road grade, with such hauling distance and grade will certainly affect the operational costs of hauling, the age of the equipment transport often suffers damage, so the costs incurred large seen from the maintenance and replacement of spareparts.This method utilizes a simple linear regression, the HD komatsu 785-7 hauling distance has a 93% influence and for the influence of HD komatsu 785-7 hauling road grade DK-16 units are 89%, DK-17 is 97%, DK-18 is 92% and DK-19 has an influence of 96%. For the DK-16 fuel consumption costs Rp. 124.896.510 DK-17 is Rp. 220.604.835, DK-18 is Rp. 67.737.900, and DK-19 is Rp. 145.370.100. For maintenance costs and spareparts DK-16 is Rp.98.861.500 DK-17 is Rp.99.931.629 DK-17 is Rp.189.447.578 DK-17 is Rp. 10.886.820.Keywords: Hauling Distance, Grade Of Road, Fuel Consumption Cost, Maintenance Cost, Sparepart Cost.

Estimasi Sumberdaya Terukur Batukapur pada Area Bukit Tajarang dengan Menggunakan Metode Indicator Krigging di Tambang Quary PT. Semen Padang, Sumatera Barat Mhd Zanil; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Semen Padang is located in Indarung Village, Lubuk Kilangan Subdistrict which is 14 KM from the center of Padang City with a height of + 200 m above sea level is one of the companies engaged in the cement industry. Reserve calculation is an important work, the responsibility is in evaluating a mining project. All technical decisions are very dependent on the work. In this study, calcareous reserves will be calculated based on the cut-off grade of each material. In each of these materials there are levels of SiO2, Al2O3, CaO and MgO. In calculating the limestone reserves contained in the Tajarang Hill area, this was done using geostatistical techniques. This geostatistics uses the estimation method while still based on the model. The method that will be used in geostatistics is the indicator krigging method. The IK estimation method does not use the assumption of a normal (free) distribution, and still takes into account the outlier (high levels), so that it can be applied to the estimation of limestone reserves. The IK method is based on the concept of probability. Data is converted into indicators with zero (0) and one (1) value relative to a limit level (discriminator). The purpose of the IK assessment is to estimate the probability at various levels of a predetermined limit. From the results of calculation of limestone resources using the krigging indicator method based on the cut-off grade of PT. Semen Padang obtained the amount of limestone resources of 36,764,700 m 3 or 97,426,455 tonsKeywords: Reserve calculation, cut off grade, geostatistics, indicator krigging, and probabilistic

Analisis Debit Air Limpasan Permukaan (Run Off) Akibat Perubahan Tata Guna Lahan Pada DAS Kuranji Dan DAS Batang Arau Kota Padang Madhatillah Madhatillah; Rusli HAR
Journals Mining Engineering : Bina Tambang Vol 5, No 1 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Changes in land use from catchment areas to densely populated areas are the main factors causing high runoff discharge values. This is because vegetation that serves to absorb water into aquifers is not optimal. So that rainwater that falls to the surface of the land continues to wave into lakes, rivers, and seas without entering and seeping into aquifers. As a result, the value of the runoff until it reaches the sea becomes large. For this reason, a study needs to be carried out to determine the volume of runoff discharge due to landuse changes such as what has been done in the Kuranji and Batang Arau Watersheds of Padang City. This research was conducted in 2 watersheds in the Padang City watershed and made into several subwatersheds to get more specific results. The data obtained are secondary in the form of daily rainfall data in 8 active rainfall measuring stations in the city of Padang for the past 10 years (2009-2018), planned discharge data in 2000, map data in the form of shapefiles. Based on data processing using the Rational large discharge method for the 25 year return period in the Kuranji watershed with a watershed area of 220,687 km2 and a runoff coefficient of 0,64 amounted to 1315,70 m3/second. This discharge value has increased by 445 m3/second compared to the value of the existing discharge plan in 2000 of 870 m3/second. In Batang Arau watershed, the discharge value with an area of 177,1386 km2 and a large runoff coefficient of 0,68 is 1192,57 m3/second. This debit value increased by 492,57 m3/second from the planned discharge in 2000 of 700 m3/second.Keywords: RunOff,Landuse, Kuranji’s Watersheds, Batang Arau’s Watersheds, and Rational

Kajian Teknis Optimasi Produksi Alat Gali Muat dan Alat Angkut Pada Kegiatan Pengupasan Overburden Berdasarkan Efisiensi Biaya Operasional Di Pit Barat PT. Allied Indo Coal Jaya Kota Sawahlunto Dita Aprilia Istiqamah; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 5, No 1 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. In an open pit, in overburden removal and hauling overburden activities in the western pit of PT. Allied Indo Coal Jaya operates 1 unit of CAT 330D2 L back hoe excavator as a digger and 3 units dump truck HINO 500 FM 260 JD. The problem currently is not achieving the overburden production target in the western pit in July 2019 which is 54,000 bcm while the actual production is 50,966.19 bcm. The method used in this study is the match factor method. The existence of the incompatibility of work between the loading and hauling equipment and conveyance, it is necessary to optimize the productivity of the equipment and the compatibility of work between the loading and unloading equipment. The actual match factor of the loading and hauling equipment is 0.75. To achieve match factor, carried out an optimization of the hauling cycle time and increase the number of bucket excavator filling so the match factor reaches 0.99. Then the total production of loading was 54,552.38 bcm/month and hauling equipment was 54,252.14 bcm/month. From the calculation results obtained the magnitude of the operational costs of the loading and hauling equipment for overburden removal before being analyzed Rp. 193,317,429 or Rp. 3,963 / bcm. After being analyzed for peeling overburden in accordance with the planned production target, a cost of Rp. 204,846,453 or Rp. 3,755 / bcm.Keyword: production, overburden, match factor, cycle time, operational cost

Optimalisasi Pengumpanan Crusher dan Analisis Regresi Multivariat Terhadap Waktu Kerja Untuk Meminimalisir Losstime Agar Tercapai Target Produksi 300.000 Ton pada Penambangan Batu Granit Di PT. Trimegah Perkasa Utama Ersila Maharani; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 4, No 4 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Trimegah Perkasa Utama is one private company engaged in the contracting of granite mining. In the mining process, PT. Trimegah Perkasa Utama aims to produce 300,000 tons in a month. However, based on actual production data in January - March 2019 the production target has not been achieved. Based on the results of field observations, it was found that one of the factors which cause the production target has not to be achieved is the number of obstacles that occur in loading hauling equipment and primary crusher units. Therefore, the Overall Equipment Effectiveness method is used to optimize the crusher feed and the Multivariate Analysis method to get the optimum time of loss time. Based on the research results obtained the equation model of time production loading hauling activities, Nordberg primary crusher, and Jaques primary crusher are Y = -326,865 + 34.28567 X1 + 564.6184 X2 + 748.8142 X3. The feed value production by optimization with the OEE method is 404,607,805 tons and the equation model of the idle time and delay time for the production of granite from each unit of the primary crusher is Y = 10115,19 - 259.22 X1 - 296,443 X2. In Jaques and Y units = 7873,46 - 60,069 X1 - 283,198 X2 in Nordberg unitsKeywords: Granit, Jaques Primary Crusher, Multivariate, Nordberg Primary Crusher, Optimalisasi Produksi

Kajian Teknik Dan Nilai Ekonomi Pengolahan Batu Kapur Pada Pertambangan Batu Kapur Rakyat Bukit Tui, Padang Panjang, Sumatera Barat Randa Septian Putra; Rusli HAR
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract.The people’s limestone mining in Bukit Tui has a mineable reserve of 12,826,641.60 MT. This study analyzes the limestone processing techniques in the Bukit Tui people's limestone mining and also analyzes the economic feasibility of the processing using the Discounted Cash Flow method. The efficiency of the limestone furnace at the Bukit Tui processing plant is very low, at 26.63% for each ton of lime produced with fuel consumption of 336.18 kg/ton of lime which generated. This is due to the incomplete combustion process. To increase the combustion efficiency, a furnace modification is needed, in the form of adding fans and recuperators. In the case of Bukit Tui limestone processing, the air needed is 8,928.42 kg. Therefore to complete the combustion process, a fan is needed to supply air to the furnace with a discharge of 0.07 m3/s. And if combustion takes place completely, fuel consumption will be reduced to 89.49 kg / ton of lime produced. Based on an analysis of economic value, it can be seen that the economic value of the Bukit Tui limestone processing can be declared economically feasible. However, it still needs to be adjusted to the processing technique to match the good mining practice rules (GMP).Keywords: Limestone, GMP, Processing Techniques, Furnace Efficiency, Economic Value

Upaya Meminimalisir Kecelakaan Kerja di Area Penambangan PT. Adaro Services Job Site Binungan, Berau Provinsi Kalimantan Timur Hafidz Haidi; Rijal Abdullah
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Unsafe conditions and unsafe actions at PT Adaro Service are the main causes of accidents that cause loss and loss to humans and companies, damage to equipment, disrupt production and others. The number of work accidents has increased dramatically at the beginning of 2018, there are still employees who ignore the use of personal protective equipment, and there are still hazards found in the work environment. This problem aims to reveal the work location that has the highest potential hazard in the mining area, the potential hazards that exist in the work environment and reveal what actions should be taken to prevent work accidents, and reveal work accident statistics. The implementation of K3 in companies is still not optimal, this is evident in the increasing number of work accidents in early 2018. The danger cannot be completely eliminated, but can be minimized. this study uses the Job Safety Analysis and Job Hazard Analysis methods to identify and analyze hazards on a job. after identifying the danger, so that to control it will be given a recommendation. Not only do hazard identification activities, but this research will also make several Job Safety Analysis and Job Hazard Analysis. By analyzing these two requirements, it is expected that the Job Safety Analysis and Job Hazard Analysis will facilitate the establishment of an occupational health and safety management system.Keywords: Production, Safety, Danger, Job Hazard Analysis, Job Safety Analysis.

Evaluasi Hasil Produktivitas Alat Gali Muat Excavator PC-400 pada Proses Penambangan Batubara di PT. Artamulia Tatapratama Mai Ridho Purnomo Putra; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 5, No 1 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Coal includes non-renewable resources originating from plants in an oxygen-free environment, and is subjected to the effects of pressure and heat that lasts very long. The coal mining process can be carried out using the Underground Mining and Surface Mining methods. The choice of mining method is based on the geological elements of coal. PT Artamulia Tatapratama is a Mining Contarctor company engaged in coal mining with the Surface Mining method. In a mining activity the mining operation starts from coal loading, transportation, to coal dumping in the stockpile. Production is a final target for companies in a mining process, where production has been planned by the company in advance. To produce production must take into account the mechanical readiness of the tool in a certain time, the use of tools and the number of products produced. To achieve the production of digging equipment is a very supporting factor in the mining process. Excavators used for coal mining are excavators. Excavator production achievement is influenced by bucket capacity, Bucket Fill Factor, Swell Factor, work efficiency, Cycletime of the tool. while the factors that greatly affect production are Human, Mechine, Method, Material and work environment.Keywords: Productivity, Excavator, Coal, Artamulia

Perancangan Program Aplikasi Geometri Peledakan Tambang Terbuka Berbasis Mobile Menggunakan Bahasa Pemrograman Android Studio Reynaldi Ezra; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. At this time Mining Industrial have entered the era where the Industrial Revolution 4.0. Certainly we have to following to apply the concept of automation carried out by machines without the need for human power in its application. It is needed in the industry for saving time, energy and cost efficiency.Especially in the implementation of blasting, we certainly need high accuracy and time efficiency to calculate very complicated geometries if manual calculations and certainly have an important role in the success of blasting to achieve the target blasting Fragmentation.To support technological advances in the Industrial Revolution Era 4.0, especially in the Blasting tecnique so that it is easy to calculate the blasting geometry and fragmentation produced, in this research, a Mobile-based Geometry and Fragmentation Blast application is made using the Android Studio, where almost everyone currently has Android Smartphone technology.The making of this application program uses 2 geometries namely R.L.Ash and C.J.Konya where both methods are often used as a basis for calculating blasting geometry. In the application trial phase of simulation data and compared with manual calculations, the program runs well and also the percentage of errors is very low when matched with manual calculations which is only 1,38%.Keywords: Blasting, Geometry, Fragmentation, Application, Android

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