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INDONESIA
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.
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Articles 34 Documents
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Search results for , issue "Vol 4, No 3 (2019): JURNAL BINA TAMBANG" : 34 Documents clear
Optimalisasi Pit Limit Penambangan Mineral Nikel Laterit PT ANTAM Tbk. Unit Bisnis Penambangan Nikel Di Site Pomalaa Sulawesi Tenggara Di Front X Fitratul Rahmi; Dedi Yulhendra
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

Abstract. Take into account mining optimization by taking into account the NPV value as the main reference factor of the Ultimate Pit Limite (UPL) that is used based on the division of levels obtained by comparing the sale value or the Net Present Value (NPV) of the Laterite Nickel Laterit. Inverse Distance Weighting (IDW) Method. This method is an interpretation method with a simple block model approach by considering the surrounding points. The mining method that will be planned on Front X is an open pit method with a multi-tiered system. At PT ANTAM Tbk. UBPN Sultra makes block model based on division of levels which differentiates each zone. At Ni level <1.3 the layer is classified as waste or called top soil, Ni level <1.5 layer is still called waste or limonite while for the value of Ni level> 1.5 is called ore or saprolite The calculation of the Lerchs Grossmann dimension algorithm is basically the sum of costs and cumulative income in the pit limit. The modeling and calculation of the Grossmann Learch Method can be planned for a more optimal pit shape and in accordance with a more economical mining price. This method is far more complicated and the risk of human error is high to determine which pit is effective. This method considers all aspects.Keyword: Pit, Ultimate Pit Limit, Net Present Value (NPV), Nikel Laterit, Blok Model
Analisis Geometri Peledakan untuk Meminimalisir Jarak Lemparan Batuan (Flyrock) pada Peledakan Tambang Terbuka PT Ansar Terang Crushindo II Pangkalan Sumatera Barat Dengan Visualisasi menggunakan Drone DJI Phantom 4 Suryadi Suryadi; Raimon Kopa
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

Abstract. Flyrock is the fragmentation of rocks that are thrown due to result of blasting. Fragmentation of rocks thrown over a safe radius can cause damage to mechanical devices, injuries, and even death to humans. This is what causes the effects of flyrock to be one of the main concerns in every blasting activity. This study aims to analyze the better of geometry in order to reduce the distance of flyrock. The study was conducted on 11 blasting blocks, by comparing the distance of flyrock before and after the geometric changes of the blasting, including seven blasting without simulation and four blasting with the simulation. Observation of the distance of flyrock in detail using DJI Phantom 4 drones and plotting coordinates with GPS (Global Positioning System). Theoretically the distance of rock throws according to the empirical method with the theories of Richard and Moore (2005) is 65 m, and Lundborg  (1981) 107.25 m. Whereas according to the method of dimensional analysis with the theory of Ebrahim Ghasemi (2012) it is 110.53 m. Of the seven blasting activities obtained the average distance of rock throws (flyrock) is 143 m with the farthest distance of 160 m. Thus Ebrahim Ghasemi's theory is more representative in predicting the distance of rock throws because it has a smaller difference (22%). Simulation of blasting activities is carried out by changing geometry in stemming depth, because statistically stemming has a very strong relationship to the distance of flyrock  (R2 = 0.84), where stemming can control energy in the hole so it is not released upwards in giving rocks to the side. Besides that the increase in stemming causes hole depth to also increase. From the four blasting simulation activities carried out, the average flyrock distance was 53.95 m with the furthest distance 63.2 m. This means that with the simulation the distance of flyrock can be minimized by 89.05 m or about 62.27%.Keywords: Blastability Geometry, Flyrock
Evaluasi Teknis Geometri Jalan Angkut Produksi Sebagai Upaya Percapaian Target Produksi Batubara 20000 ton/bulan di Tambang Terbuka PT. Allied Indo Coal Jaya (AICJ), Perambahan, Kecamatan Talawi, Kota Sawalunto, Sumatera Barat. Rizky Nanda Putra; Tamrin Kasim
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

Abstract. Based on the results of the road geometry evaluation, the following results show that the actual straight road width is between 6.2 - 10.2 m, whereas theoretically the width of the straight road must be made 9 m. The actual grade grades from Stockpile to the West Pit range from 6.98% to 15.83%. The cross slope from Pit to disposal is 4%. Superelevation figures are recommended to overcome road bends with a maximum speed of 40 km / h with a width of 12 meters curved road is 4.98%. The actual productivity before repairing the haul road using the dump truck is Hino Ranger FM 260 JD an average of 18.47 Ton / Hour. This productivity has not yet reached the production target set by PT. Alliet Indo Coal Jaya which is equal to 20000 tons / month. As for productivity after road repairs, 20.90 tons / hour. Keywords:   Geometry, Stockpile, Haul Road, Productivity, Target.
Estimasi Sumberdaya Bijih Besi Menggunakan Metode Ordinary Krigging di PT. Gamindra Mitra Kesuma, Kec. Sungai Beremas, Kab. Pasaman Barat, Sumatera Barat Rido Muhammad Afif; Adree Octova
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

PT.Gamindra Mitra Kesuma is a mining company currently exploring iron ore in the district. Sungai Beremass to get the distribution of iron ore and the amount of iron ore available in the area. Exploration is carried out by drilling a total of 11 drill hole points on an area of 20 hectares. To find out the amount and distribution of iron ore, it is necessary to estimate the resources which currently researchers use the ordinary krigging method with spatial estimation where the error variance is minimized. Researchers used a 3-dimensional block model with a block size of 30m x 30m x 1m which is in the estimation of the study area. To carry out the process of estimating krigging, the value of sill, range, nugget is needed, to facilitate the fitting of the variogram. By analyzing the variogram with 4 main directions and all directions will get the data distribution. Estimation results using the ordinary krigging method in the form of block models that have been topped by topography and bottom topography. The estimation is obtained in the number of blocks from the results of the top topography and bottom topography where the total iron ore tonnage is 31.680.000 tons and overburden is 12.736.800 bcm with a stripping ratio of 0.402 bcm / ton. Keywords : Resource, Estimation, Ordinary Kriging, Variogram, Iron Ore
Optimasi Alat Muat dan Alat Angkut Untuk Meningkatkan Produksi Limestone Setelah Indarung VI Berproduksi Di PT Semen Padang Marta Borisman; Ansosry Ansosry
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

Abstract. Indarung VI factory began production in April 2017, causing an increase in the need forlimestone, which was sourced from the Existing Area, from 679,140 tons to 826,833 tons. This study aimsto find out whether production equipment in the existing area are able to meet these increased needs, anddetermine the optimization that must be done so that the needs are met. The approach taken is to make asimulation that describes the actual conditions (operating patterns, effective hours, productivity of tools) inthe field, to be compared with the production target. Optimization is done by analyzing the productivity ofproduction equipment and effective hours, compared with their theoretical productivity. After beingsimulated, it is known that the production equipment has an actual production capability of 679,140 tons,with a percentage of the production target of 82%. limestone. This means that production equipment has notmet the production target, so production equipment optimization must be done. Optimization carried out:Improved work efficiency Improved work efficiency from 58.97% to 82.65%, and redesigning matchingfleet. After the optimization above, the existing area production equipment has a total limestone productionof 840,111 tons per month, with a production achievement of 102%.Keywords: Optimization; Simulation; Effective Hours;Productivity;matching fleet
Analisis Kestabilan Tunnel Berdasarkan Klasifikasi Geomekanika (RMR-System) Pada Penambangan Batubara Bawah Tanah Metoda Room and Pillar PT. Allied Indo Coal Jaya (AICJ) Sawahlunto Muhammad Deno Akbar; Bambang Heriyadi; Ansosry Ansosry
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

Abstract. Excavation of tunnels in underground mines is quite a complex job, because it will give a change in balance from rock conditions that can be failure. This research was conducted to determine rock strength, rock mass class, and open  hole stability based on the potential of wedge debris by estimating the Safety Factor (FS) value of the planned tunnel. Based on the RMR-System method, the value for coal is 49 points, where this rock is included in class III (fair rock) with maximum stand up time is 310 hours  (±13 days) for 3m of span. The results of the RMR ground support recommends using Rock bolt with a diameter of 20 mm, fully grounted length 4 m, and spacing 1.5-2 m. Another alternative is to use a Class V wooden stand. Based on the results, the value of safety factor (FS) on the roof (siltstone) is 1,944, FS on the left wall (Coal) is 1,346, and the right wall (Coal) is 4,067. From the results of rock reinforcement using the RMR-System ground support recommendations, the result is an increase in the Safety Factor (FS) value from the value of 1,346 to 2,377 so that the wedge is more stable.Keywords:  Tunnel, Safety Factor (FS), RMR System , Stand-Up Time, Ground Support.
Analisis Property Damage di Area Tambang Pt. Pamapersada Nusantara Site Air Laya Provinsi Sumatera Selatan Rycomatsu Rycomatsu; Rijal Abdullah
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

Abstract. PT Pama Persada Nusantara is a company engaged in mining, in the process of coal mining, the company realizes that the frequency of risk of possible work accidents is very high. Events that occur unexpectedly in the process of mining activities, lack of employee awareness of PPE (Personal Protective Equipment) and the importance of signs in the mining area is one of the evaluation materials in occupational safety and health in minimizing mining accidents related to employees. For this reason, it is necessary to conduct research and studies on occupational safety and health to create safe conditions, avoid unsafe actions and supervision of every activity. Thus, the risk to each element involved in mining activities can be minimized especially in the Operations area . Based on the description above that is the basis for the author to conduct further research in the study with the title " Factor Analysis To Know the Causes of Accident Property Damage in the Operations Area of PT Pama Persada Nusantara   Site Air Laya South Sumatra Province".   Keywords: Occupational Safety and Health, Personal Protective Equipment, Property Damage, Mining, Accidents
Analisis Potensi Longsor Pada Ruas Jalan Kawasan Wisata Mandeh-Sungai Nyalo Km 18 Kecamatan Koto XI Tarusan, Kabupaten Pesisir Selatan Novia Afrizal; Yoszi Mingsi Anaperta; Riko Maiyudi
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

Abstract. Based on observations that have been made on the Mandeh-Nyalo Tourism Area road section, it is found that the slopes which have many weak field structures in the form of burly, and the high intensity of the earthquake in West Sumatra greatly affect the stability of the slope conditions. From these problems, it is necessary to know the condition of rock mass on the study slope. Furthermore, it is necessary to analyze the slope stability. From the results of rock mass classification with the RMR system, the rocks are included in group II with good quality rock mass. Then, from the slope stability analysis using slide software, the slope stability value in the original condition was 1.95 and the saturation condition was 1.36. And based on the analysis of the slope stability value with the Hoek and Bray method, the slope stability value is 1.70.Keywords: Slope, landslides, rock mass, safety factors, strengthened
Rancangan Geometri Peledakan Untuk Mencapai Target Fragmentasi Ideal Berdasarkan Nilai Blastibility Index Pada Tamka PT. Allied Indo Coal Jaya Kota Sawahlunto Syarif Hidayattullah; Bambang Heriyadi
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

Abstract. In blasting, the fragmentation of blasting results is influenced by the characteristics of rock masses, geological structures, groundwater, and others. Blastibility Index is a measurement of geological conditions and rock mass characteristics in blasting, in the measurement of blastibility index There are several parameters such as the rock mass description obtained RQD by 71,96% classified as a blocky rock, The joint mass description is classified as intermediate (space 0,1 m – 1 m), joint plane orientation (JPO) dip into face, specific grafity influence (25 x 2,68 - 50) obtained 17, hardness of 5,5. The blastibility index gained 51,25 with the 6,15 rock factor. In the lily chart is acquired geometry blasting design with a burden of 2,03m , spacing 2,85m, the dept of blast holes 6,09 m, PC 4,37 m, stemming 1,6 m, subdrilling 0,608 m, the explosives weight 17,994 kg/hole, powder factor 0,567 kg/m3. Actual fragmentation of the geometry design with the first lily chart  is embraced by the software Splitdesktop 2.0 obtained a fragmentation size of 50 cm at 6,31%. Design of the second blasting geometry burden 2,337 m, space 3,272m, the depth of the blast hole 7,011 m, PC  5,375 m, stemming  1,635 m, explosive weight 20,715kg/hole, powder factor 0,43 kg/m3.
Analisis Lubang Bukaan Decline Channel (CH) 677 Blok Cikoneng PT. Cibaliung Sumberdaya, Banten Annisa Hanim D; Bambang Heriyadi
Bina Tambang Vol 4, No 3 (2019): JURNAL BINA TAMBANG
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract

Abstract. Study was conducted in the underground mine of PT Cibaliung Sumberdaya, Cimanggu, Pandeglang, Banten Province. Openings of declines and mining fronts, has caused the stability of the mining area to be disrupted. Rock deformation at the site is decline still observed using a convergence meter. In detail the observation area was carried out at decline Cikoneng CH 677, the rock mass quality (RMR) is 31 and width of decline is 4,2 m. From the results of the observation, the CH 677 have a lump on the left wall and cracks on shotcrete. The cumulative convergence monitoring results show a displacement is 32,285 mm with the largest displacement speed of 1,718 mm/day. The 2 D modeling results based on convergence theory, the area are categorized as unstable. For this reason, the stability of the aperture hole was performed using software Phase 2 with Hoek-Brown collapse criteria. The simulation produced a support system using 5 pieces of rock bolt (2,4 m) set of on the left wall with a space of 0,8 m, 5 pieces on the right wall with a spacing of 0,8 m and using shotcrete on the left wall with a thickness of 100 mm.Keywords: Decline, convergence meter, tunnel stability, deformation, rock bolt

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