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INTAN Jurnal Penelitian Tambang

intan
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Published by Universitas Papua

ISSN : 26553473 EISSN : 27232727 DOI : https://doi.org/10.56139/intan.v4i2.85

Core Subject : Economy, Science, Engineering,

Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Engineering

Fokus dan lingkup Jurnal INTAN adalah Pertambangan baik dalam pengelolaan dan pengusahaan mineral atau batubara yang meliputi eksplorasi, konstruksi, penambangan, pengolahan dan/atau pemurnian atau pengembangan dan/atau pemanfaatan, pengangkutan dan penjualan, kegiatan reklamasi dan pascatambang, kebijakan-kebijakan ekonomi, lingkungan, dan sosial di bidang pertambangan mineral dan batubara. Jadi Jurnal Intan merupakan media untuk menyalurkan pemahaman tentang aspek-aspek sains, teknologi, ekonomi, sosial dan lingkungan dari dunia pertambangan berupa hasil penelitian lapangan atau laboratorium maupun studi pustaka.

Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)

Articles 124 Documents

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EVALUASI KINERJA ALAT PENGOLAHAN SIRTU PT. BINTANG TIMUR LESTARI KOTA SORONG PROVINSI PAPUA BARAT Chairun Nisa; Jance M. Supit
INTAN Jurnal Penelitian Tambang Vol. 2 No. 2 (2019): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

The processing of base course must be able to meet consumer demand. Thus, evaluating the works of the crushing plant as well as adjusting the final products by washing the sand. The problems state in this study are how much the pebble produce from the crushing plant, how much the pebble produce from the sand wash, what kind of obstacles during the process, and how to achieved better production. Further more the study aim to calculate the plant yield production; the diffraction yield is 3075,004 m3 / month with the distribution in each fraction of 3/8 (pebble) fraction of 381,175 m3 / month fraction 1 / 2 (gravel) of 853,121 m3 / month, fraction 2/3 (pebble) of 1164,484 m3 / month, and abubatu fraction of 676,424 m3 / month. The calculation results have not yet reached the company standard; fractions 3/8 (pebble) = 10%, fractions 1/2 (pebble) = 21%, and fractions 2/3 (gravel) = 29%, and rock ash fractions ( very fine sand) = 17%, with the desired presentation the company is a fraction 3/8 (pebble) = 5 - 10%, fraction 1/2 (pebble) = 20 - 25%, fraction 2/3 (gravel) = 30 - 35%, and rock ash fraction (very fine sand) = 20 - 25%. Hence, the results of the presentation are deficiencies in fractions 2/3 (gravel) and stone ash (very fine sand). Whereas for sand washing, the number of buckets is 1339 times per month, with the amount of volume entering 3385.97 m³ / month, and the total volume coming out is 3361 m³ / month. Constraints that occur in the processing process in this case during production such as improper working time, rain, repair of tools, and chunks larger than 35 cm.

ANALISIS KESTABILAN LERENG PENAMBANGAN NIKEL PADA PT. GAG NIKEL DENGAN MENGGUNAKAN METODE BISHOP Papua Dorus Rumsowek; Indra Birawaputra
INTAN Jurnal Penelitian Tambang Vol. 2 No. 2 (2019): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

It is important to understand the condition of the slopes formed and the FK values obtained from the results of slope analysis in order to provide a safe FK value based on standard requirements for nickel mining slopes. The problems found in the study are, what variables are used in calculating FK values as well as the presence of safe FK values and level geometries that are ideal for mining activities. Thus, the results of one of the main variables used to calculate the slope balance are Bishop method, and get FK values from one different methods, namely 1.144 by looking at the characteristics of the soil and rocks.

ANALISIS PENGARUH KEMIRINGAN JALAN ANGKUT TERHADAP KONSUMSI BAHAN BAKAR DUMP TRUCK HINO 500 FG 235 JJ Rinaldi R. Wincono; Juanita R. Horman
INTAN Jurnal Penelitian Tambang Vol. 2 No. 2 (2019): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

Dump truck is one of the mechanical equipment that become the main conveyance in mining activity especially in open pit. In its use dump trucks require a variety of operational needs, one of them the need for fuel oil (diesel). Transportation Activities conducted by PT. Sumber Anugrah Buana using Hino 500 FG 235 JJ type hauling equipment. Transportation distance from the mining front to the stockyard of 120 meters is divided into two segments, segment A-B and B`-C with each slope of 10% -20%. The average fuel consumption of Hino 500 FG 235 JJ is 7.11 liter / hour. Based on the results of the analysis is known that the slope of the haul road greatly affect the large consumption of diesel fuel. Fuel consumption is most needed when traversing an uphill road with a 30% (+) road slope. On the uphill road there are several forces as a vehicle inhibitor.

HIDROGEOLOGI AIR TANAH: STUDI KASUS PADA LUBANG BUKAAN BEKAS PENAMBANGAN BIJIH MANGAN DI DUSUN KLIRIPAN KABUPATEN KULONPROGO Suyono; Halimah Tusak Diah; Tedy Agung Cahyadi
INTAN Jurnal Penelitian Tambang Vol. 3 No. 1 (2020): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

The study was conducted in the opening hole of the former manganese ore mining of Vertical Shaft (PTPM) and Inclined Shaft (Sunoto) located in Dusun Kliripan, Desa Hargorejo, Kecamatan Kokap, Kabupaten Kulonprogo, Provinsi Daerah Istimewa Yogyakarta. The two planned openings will be the object of geological tourism and underground mining practice of mining engineering students. This research wants to study the hydrogeological conditions in the Dusun Kliripan. The methods used in this research are literature study, field orientation, primary data collection including measurement of groundwater level and infiltration rate, as well as the topography of the study area, secondary data include rainfall data, topographic maps, and geological maps, and hydrogeological maps. The next stage includes data processing, as well as the study of data processing results. The results obtained were lithology conditions including Frozen Rock, Volcanic Breccia, and Limestone, the average infiltration rate obtained was 0.16 cm/min, the groundwater level in the Kliripan was at an elevation of 70 masl to 92 masl, with basin groundwater is included in the Menoreh Groundwater Basin area. The Kliripan area has a sufficiently good groundwater reserve with complete hydrogeological elements so that it can be used for continued use of groundwater in the region.

STUDI EKSPERIMENTAL KUAT TEKAN CAMPURAN TANAH LATERIT DAN KAPUR (CaCO3) UNTUK LAPIS PONDASI JALAN Irianto
INTAN Jurnal Penelitian Tambang Vol. 3 No. 1 (2020): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

In remote areas most roads still use soil pavement which is very susceptible to weather changes, especially those using soil pavement with high plasticity or clay soil. In addition to cost issues, the difficulty of obtaining a good material source becomes another problem that results in soaring material procurement prices. Related to that matter, then conducted research that utilize local material that is limestone rock (limestone) as material of stabilization. This research is experimental by designing a mixture of lime-laterite cylinders with a diameter of 50 mm and a height of 100 mm. The number of test specimens was 144 by taking samples from two regions, namely Skyland-Jayapura and Mindiptana-Merauke and for mixtures using 5%, 10%, 15%, 20%, 30%, 40%, 60% % with lime gradation each pass 10, 40, and 200 sieves. Mixed mechanical testing was performed after the test specimen was subjected at 7 days with a compressive strength test. The results showed that the specimens for Skyland-Jayapura area with a mixture of laterite soil + lime pass filter 200 were in lime variations of 5% valued at 0.46 MPa, while laterite + lime clearance 40 was in lime variation of 5% 0 , 64 MPa.

SENSITIVITAS JUMLAH STAGES PADA DESAIN ESP SUMUR DIRECTIONAL”X” LAPANGAN SALAWATI Jeanne A.; Leonardo D. M.; Praditya N.
INTAN Jurnal Penelitian Tambang Vol. 3 No. 1 (2020): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

An Onshore Well “X” of JOB Pertamina-Petrochina field is a directional well. This particular well has ESP as the artificial lift to deliver the production fluid into the surface. Due to “off down hole”, the oil production had been suspended since 2012. However recently, the well will be activated and the pump will be modified into the new one. The purpose of this modification is to find the most suitable and effective pump with optimum numbers of installed stages on the ESP. This ESP design is started by nodal system analysis which corelates Inflow Performance Relationship (IPR) to Intake Pump Pressure. From the calculation using Pudjo Soekarno equation results a maximum flow rate in this well is 446,33 BPD. The flow rate is targeted to 65% from the maximum flowrate. Therefore, ESP series 319 NBV 250-500/60 Hz is chosen considering the operating range around 231-416 BPD which in this case is inside the range. Pump will be installed at 8500 ft depth. The numbers of stages based on calculation is 270 stages capable to lift 300 barrels fluid per day. This flowrate approximately meets the targeted flowrate, furthermore the pump will be at 47,9% of its Best Efficiency (BEP) during the operation. With this result the pump is considered able to operate efficiently and durably.

CUT OFF GRADE NIKEL LATERIT PADA BLOK 1A PT. ANUGRAH SUKSES MINING Denzi Y. Rohmaningrum; Juanita R. Horman
INTAN Jurnal Penelitian Tambang Vol. 3 No. 1 (2020): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

PT. Anugrah Sukses Mining (ASM) is a company engaged in laterite nickel mining. PT. ASM has a production target of 140,000 tons / month, with an average nickel content of 1.95%. PT. ASM operates mining based on the divisions of regions or blocks of mining. Block 1A is the first block mined by PT. ASM. Block 1A has a total area of 490,000 m2 and is divided into three mining areas, namely pit 1, pit 2 and pit 3. This research focuses on the pit 2 mining front where limonite and saprolite as laterite nickel zonation. This research was conducted to determine the cut off grade of the laterite nickel grade of the planned sequence. Total tonnage of laterite nickel prior to pit formation was 235,943 tons, with 86,922 tons of waste, 149,021 tons of ore, 0.58: 1 of SR, and cut off grade % Ni ≥ 1.63. The total tonnage of laterite nickel after pit formed was 231,105 tons, with 81,414 tons of waste, 149,217 tons of ore, cut off grade % Ni 1.57 and 0.54: 1 of SR.

PENGARUH PELAPUKAN TERHADAP REKAHAN BATUAN UTUH MELALUI PENGUJIAN DI LABORATORIUM Karmila Laitupa
INTAN Jurnal Penelitian Tambang Vol. 3 No. 1 (2020): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

Cracked rock is an indication of instability in underground excavations due to being under high-pressure conditions that causes new cracks to appear by forming cracks in the walls of holes or tunnels. The cracking process can be influenced by environmental conditions around the rock. Therefore, this study aims to analyze the effects of weathering on cracks and other characteristics in intact rock. Petrographic observations indicate differences in the presentation of rock mineral preparation in the six samples. Changes in the preparation of primary rocks are plagioclase minerals (32% -39%) and hornblende minerals (12% -20). While the opaque mineral (3% -5%) as a change from the mineral hornblende, volcanic glass (8% -21%) has partially decayed into clay and plagioclase microlites (17%). The results of the uniaxial compressive strength test suggested that the crack initiation stress value of rock samples KA2, KA3, BT1, BE2, TS2, and TD3 are 22.55 MPa, 35.07 MPa, 20.04 MPa, 50.08 MPa, 34, 92 MPa and 105.22 MPa. The rock strength of the six rock samples is 61.92 MPa, 47.6 MPa, 86.43 MPa, 89.39 MPa, 88.54 MPa, and 120.25 MPa, respectively. The results also showed a tendency to increase fracture initial stress (crack initiation) along with the increase in uniaxial compressive strength values. the stronger the pressure of the withstanding test, the greater the initial stress of the crack (crack initiation). This is caused by weathering which can reduce the elasticity of rocks that increases surface tension. Weathering plays an important role in changing the initial stress value of fractures and the strength of intact rock. The higher the weathering the smaller the rock strength and the initial stress value of the crack. Weathering due to degradation and mineralogy changes in intact rock samples has an impact on the characteristics of intact rock. This is shown in changes in the value of the content weight, porosity, rock strength, rock fracture, Modulus Young and Poisson Ratio decreases with increasing weathering.

RANCANGAN SETLING POND TERHADAP LAJU ENDAPAN SEDIMEN PADA AREA ARAFAH DAN WASTE DUMP PADA FRONT PENAMBANGAN PT. GAG NIKEL KAB. RAJA AMPAT PROVINSI PAPUA BARAT Nofriyanto Towansiba; Yulius G. Pangkung
INTAN Jurnal Penelitian Tambang Vol. 3 No. 1 (2020): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

It is very important to know the design of the mine drainage system where to know the maximum rainfall each year, the extent of the catchment area, rainwater runoff discharge, sedimentation speed, open channel dimensions and sedimentation pond dimensions. The problem in this research is, how much is the catchment area, limited rainfall owned by the company, sedimentation speed, sedimentation pond dimensions and open channels. So that the results of the above problems are obtained, namely the extent of the arafah rain catchment area 103810,009 m2, waste dump I 256.901 m2, waste dump II 327172.506 m2. Runoff discharge at the area of 0.763 m3 / second, waste dump I 1,889 m3 / second, waste dump II 2,405 m3 / second. Sedimentation speed compressed 0,000365 m / s, open channel dimensions (neural area) I = 0.4 m, b = 0.45 m, t = 1.2 m, d = 0.7 m, h = 0.4 m. Waste dump area 1. I = 0.5 m, b = 0.63, t = 1.65 m, d = 1 m, h = 0.5 m. Waste dump area II. S = 600, I = 0.6 m, b = 0.7 m, t = 1.8 m, d = 1.1 m, h = 0.6 m. Dimension of arafah settling ponds, 2091.063974 m2, waste dump I, 5174, 822463 m2, waste dump II, 6590, 295552 m2. For sump dimensions with a depth of 2 meters, a leght of 56,42 meters and a width of 26,40 meters with a volume of 2450,444 m

ESTIMASI SUMBERDAYA NIKEL LATERIT PADA BLOK 1A PT. XYZ PULAU GEBE Supriyono; Jance Murdjani Supit
INTAN Jurnal Penelitian Tambang Vol. 3 No. 1 (2020): INTAN Jurnal Penelitian Tambang
Publisher : Jurusan Teknik Pertambangan Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

XYZ is a company engaged in the field of lateritic nickel mining, where the Mining Business License Area (WIUP) is located in Umera Village, Gebe Island District, Central Halmahera Regency, North Maluku Province. This study aims to estimate Block 1A lateritic nickel resources, and classify the lateritic nickel resources. The analysis conducted is univariate statistical analysis, outliers, semivariogram analysis, variogram validation, ordinary kriging estimation with the results obtained by tonnage of lateritic nickel resources (Ni) and kriging variance values that can be used for determining the classification of resources through Relative Kriging Standard Deviation (RKSD). Indicated mineral resources of lateritic nickel in Block 1A is 3,240,730,596 tons.

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Home Page

OAI Link

Editorial Team

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Contact Name Arif Setiawan

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Phone +6281248459584

Journal Mail Official a.setiawan@unipa.ac.id

Editorial Address Jl. Gn. Salju, Amban, Kec. Manokwari Barat. Kabupaten Manokwari, Papua Barat. 98314

Location Kab. manokwari, Papua barat INDONESIA

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Contact Name
Arif Setiawan

Contact Email
a.setiawan@unipa.ac.id

Phone
+6281248459584

Journal Mail Official
a.setiawan@unipa.ac.id

Editorial Address
Jl. Gn. Salju, Amban, Kec. Manokwari Barat. Kabupaten Manokwari, Papua Barat. 98314

Location
Kab. manokwari,

Papua barat

INDONESIA