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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 Efek Rembesan Air Sungai Lawai terhadap Kestabilan Rencana Lereng dengan Metode Morgenstern-Price pada Low Wall Tambang Air Laya Blok Barat PT. Bukit Asam Tbk, Tanjung Enim, Sumatera Selatan Triliani Utami; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Bukit Asam using open pit method. Slopes are one of the most important factors in mining activities. Seepage is considering occur in location of studies in low wall of TAL, there is lawai river at the slope’s peak which can have an effect on the stability of the pit slope then analysis is needed. The analysis use Morgenstern-Price method with geotechnical software. The input data needed consists of rock lining material, material’s permeability, volumetric water content and data of physical and mechanical properties. Analysis of seepage and slope dissociation stability in 3 conditions of the river. The output of analysis are seepage discharge and safety factors. Seepage discharge during dry river is 8,131x10-6 m3/s with F/S 1,259, river conditions in partial height is 2.492x10-4 m3/s with F/S 1,171 and the river conditions in maximum height is 4,792x10-4 m3/s with F/S 1,110. The conclusion is water seepage has an effect on slope stability, the greater the seepage discharge so the smaller the F/S and the smaller the seepage discharge so the greater the F/S. Recommendation is needed by enlarging the slope angle, adding the benchs, cutting peak’s load around 556.43 m2/m and controlling river airflow at maximum height of 6 meters.Keywords: Slope Stability, Factor of Safety, Seepage, Seepage Discharge, Morgenstern-Price

PERENCANAAN KEGIATAN REKLAMASI PADA DISPOSAL AREA PT. ANDALAS NUSA INDAH (ANI) SUNGAI BERINGIN, KECAMATAN PELEPAT, KABUPATEN MUARO BUNGO, PROVINSI JAMBI Arief Dwi Purnomo; Yunasril Yunasril; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT. Andalas Nusa Indah (PT ANI) is a coal mining company located in SungaiBringin Village, Pelepat District, Bungo Regency, Jambi Province with license status ofProduction Operation Mining License (20010-2019) based on SK Bungo IUP NO. 273 /DESDM in 2010, issued by Bungo Regent with a total area of 146 Ha.PT. ANI has a disposal with an area of ± 2.56 Ha, which has no longer functioning.The disposal of the area is in arid condition which when the dry season causes dust and inthe rainy season there are puddles so that the water puddle can overflow and drain the mineroad which productivity muddle. And also Most of the disposal land has not been usedoptimally because there is overburden pile part that is too high while the available land fordisposal is still wide. The company plans to reclaim the disposal of the area. Therefore, goodreclamation planning should be made.Reclamation planning starts from the arrangement of the land, where overburdenheap that is not equal to height will be flattened so that all the height parallel, After thatmaking terracing, topsoil top soil spread as planting medium. After the land settlement iscompleted then the land will be done cover crop planting. Furthermore, the revegetationprocess starts from pengajiran, excavation planting hole, planting, and maintenance (1 yearafter the seedlings are planted).Based on calculations in the planning of reclamation disposal area by way ofrevegation, the direct cost for the activities of land smoothing up to revegetation at thedisposal area is Rp. 132.294.402 and indirect costs of Rp. 47.301.493. Then the total cost ofrevegetation is Rp.179.595.895.

EVALUASI KONDISI SISTEM PENYALIRAN AKTUAL UNTUK MEMBUAT PERENCANAAN SISTEM PENYALIRAN DI PIT B RAWA SELATAN TAMBANG BATUBARA PT. MANDALA KARYA PRIMA JOB SITE PT. MANDIRI INTIPERKASA, KALIMANTAN UTARA Febrian Febrian; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract.PT. Mandala Karya Prima (MKP) is a mining contractor who undertake mining activities in Pit B Rawa Selatan, District and Sub-District Sembakung Sesayap Hilir, Nunukan and Tana Tidung, North Kalimantan Province. Based on the analysis of rainfall data in 2008-2017, the planned rainfall was 95,403 mm / day. Research location, Pit B South Rawa PT. MKP, the actual condition in 2018 has 2 catchment areas with different areas, there is peat runoff water with a discharge of 184.000 m3 / hour, there are 2 sumps namely temporary sump A5 and main sump A2. Recommended temporary dimensions of A5 sump with a maximum volume of 416.520 m3, elevation control on main sump with +16 water elevation, making an open channel in the North A5 Inpit Dump area. In 2019 the authors planned 4 catchment areas with different areas, there were 3 sumps, namely temporary sump A5, temporary sump A6 and main sump A2. The author plans elevation control with a water elevation of +16 in 2019 in the main sump A2 area, making 2 open channels namely in the higwall and lowwall mine areas. The pumping system was carried out using HDPE pipes and 10 pumps unit merk Multiflo 420 EXHV. Settling pond planned for 4 compartments with a capacity of each compartment of 1422,53 m3.Keywords: Rainfall, Catchment Area, Sump, Open Channel, Settling Pond

Analisis Sensitivitas Deterministik Investasi Pengadaan Alat Berat di Perusahaan Pertambangan Batubara dengan Metode NPV Rizto Salia Zakri; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. One of the biggest financing components in mining companies, especially coal mining, is production costs, while have contribution of> 20% in total mining costs. On the other hand the production process is the main process in mining, becaus this activity will produce commodities. Heavy equipment is a major component in the production process, the selection of heavy equipment is a determining factor in the calculation of production costs. Methods of procurement of heavy equipment are important in the calculation of production costs, in general there are 3 commonly used heavy equipment procurement methods, namely the direct purchase method (cash), the credit method (leasing), and the rental method. Each method requires a different investment value from each other. In the principle of investment, which is considered as a profitable investment is an investment that provides the greatest returns, it can be in the form of the net present value (NPV) and the largest interest rate ratio (IRR) which is greater than the bank interest rate. Changing commodity values, and rising and falling fuel prices, will affect the investment value of the heavy equipment procurement process, sensitivity analysis is important to know in which conditions the investment is still profitable. Based on the deterministic sensitivity analysis, it can be seen that commodity prices are the most influential parameter on investment returns, while fuel prices do not significantly affect investment returns. The procurement method used is also not affected by changes in investment parameters, the method of procurement of cash is the best option, with a large initial investment value.Keywords: Deterministic Sensivity Analysis, Net Preset Value (NPV), Heavy Equipment, Investment, Coal Mining, Spider Web

Faktor-faktor Penyebab Kecelakaan Kerja di Areal Penambangan Batu Kapur pada Pt. Sumbar Calcium Pratama Rezki Hidayat; Rijal Abdullah; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

At PT. Sumbar Calcium Pratama found several violations against existingSOP. There are still many workers who work in hazardous work positions, the useof equipment and machines in an unsafe way and they not use the protection toolsthat have been provided by the company. The purpose of this research is to revealthe factors that cause work accidents, reveal the most dominant factors as thecause of occupational accidents, reveal the potential hazards that can causeaccidents, can calculate the percentage of the frequency and severity of workaccidents, can cause human error or unsafe employee behavior, and can give anidea of the use of hazard card.In this research, combined between theory with field data, so get problemsolving approach. And the results of data processing will be analyzed forsubsequent to be generated a recommendation.Based on the results of research conducted can be summed up some of thefollowing. First, accident-causing factors are generally caused by unsafe andunsafe measures, the most dominant factor is unsafe, other potential hazards thatallow the occurrence of accidents in the implementation of mining activities inPT. Sumbar Calcium Pratama, such as the convetional mining, in 2016, 87.3%frequency rate and severity rate of 43.69%, and the results of the questionnairenote that the attitude and application of employees are in fairly good category.Keywords: K3, unsafe action, unsafe condition

Kajian Teknis dan Ekonomis Penimbunan Sump MT4 Sebagai Upaya Optimasi Biaya Penambangan TAL Barat 2018 di PT. Bukit Asam Tbk Unit Pertambangan Tanjung Enim Sumatera Selatan Rifki Aditya; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Tambang Air Laya (TAL) has two pits that are operating in 2018 is the W est TAL Pit and the Lingkar Pit. In W est TAL Pit there is MT4 sump which is a gathering place for water that enters the current Pit. In the W est TAL sump location there still are reserves that have not been taken due to the presence of lubrications. In January 2018, TAL Backfilling that placed on east side of MT4 sump has an indication of fracture. To overcome this situation it is necessary to cover up MT4 sump to prevent the avalanche of Backfilling TAL which will affect W est TAL mining process. The purpose of this research is to obtain the right embankment design based on technical aspects and to carry out economic analysis of the activities of W est TAL sump. Based on the results of the research carried out, the following points can be concluded. First, the most appropriate embankment design based on technical aspects is 6 meters high of slope, berm 30 meters, single slope 18 degrees, overall slope is 8-9 degrees and obtained a capacity of embankment 4,500,000 ccm. Then, coal reserves getting decreased to 357,730 tons due to hoarding in MT4 sump W et TAL. Third, there is no loss due to coal reserve loss thanks to the cost of extracting coal is much bigger in Rp. 14,784,395,827 than the total sales price of coal and there is a potential profit obtained by the accumulation of MT4 sump W est TAL at Rp. 192,354,742,470. Keywords: mine plan, optimization, mine design, economist, coal

Optimalisasi Produksi Shovel Komatsu 3000E-6 dengan Metode Overall Equipment Effectiveness (OEE) Pada Pengupasan Lapisan Overburden di Pit 2 Tambang Banko Barat PT. Bukit Asam (Persero) Tbk Nadia Anggraini Putri; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Based on production data stripping overburden in West Banko Mine Pit 2 PT. Bukit Asam (Persero) Tbk months of January to August 2017, the production of overburden stripping does not reach the target. This has an impact on the operating costs incurred for stripping each BCM (Bank Cubic Meter) The overburden layer. To determine the potential improvement of a production process and the effectiveness of using a piece of equipment is necessary to do analisis using Overall Equipment Effectiveness (OEE). OEE is known as one of the applications total productive maintenance program that has the ability to clearly identify the root causes and contributing factors that make businesses more focused repairs. Now we know the root of the problem, then use statistical analysis of multiple linear regression to determine the relationship and the maximum limit of barriers - barriers so that production can be achieved. Furthermore fishbone method is used to find the root problems and more detailed evaluation with reference to the results of multiple linear regression statistical analysis acquired. After analysis and repair method - the method of production of shovel komatsu obtained 3000E-6 exceeded what had been planned. But the value of OEE each trencher-load still <85% has not been reached world-class OEE value> 85%, it can be concluded that the state of the equipment is not good. Should be repaired back to standby and tool breakdown.Keywords: Production, Overall Equipment Effectiveness, Statistical Analysis Multiple Linear Regression, Fishbone Method, Shovel Komatsu 3000E-6

PERENCANAAN PENAMBANGAN JANGKA MENENGAH (QUARTERLY PLAN) NIKEL LATERIT PADA PIT A, B DAN C PT. GANE PERMAI SENTOSA HARITA NICKEL PULAU OBI, MALUKU UTARA Annisa Intan Y.R; Dedi Yulhendra; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 1, No 2 (2014): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT. Gane Permai Sentosa (Nickel Harita Group) is one of the private mining companies that are conducting nickel laterite mining in Obi island, South Halmahera, North Maluku Province. PT. Gane Permai Sentosa is using open pit mine as its mining method. Of the block models that has been estimated by krigging method, there are 1,215,946 tons of mineable reserve ore which is the result of blending between high grade ore with 2.02% of Ni grade which has the portion 67% in total of mineable reserve and medium-grade ore with 1,60% Ni grade which has 33% in total of mineable reserve. That will be blanded and will reach 1.90% grade of Ni and the average stripping ratio is 1.57 and can be mined for 6 month. With the production target of ore is 200,000 tonnes in a month as like as buyer spesification that minimum Ni grade is 1.85% We can conclude that for the medium term mining in Pit A, B and C will be able to be mined and reach production targets set. Keywords: reserve calculation, production schedulling, ore analysis

Analysis Of JHA, JSA and Management K3 At KIP 16 Bangka Ocean Mining Units PT Timah (Persero) Tbk Province Bangka Belitung Islands Riri Rahmahwati Joni; Rusli HAR; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

This research discuss about safety and health occupational control inBangka Ocean KIP Timah 16 Units using some risk management methodes. Themethodes are Job Hazard Analysis (JHA), Job Safety Analysis (JSA), and HazardIdentification Risk Assesment Determining Control (HIRADC). Purpose of theresearch is to explain safety and health occupational in KIP Timah 16 Unit it isfor get the improvement of productivity work, production, welfare andcomfortability workers and achievment of zero accident.The type pf the research is descriptive. There are two data had collected.They are primary and secondery data. Primary data get from interview with theemployees and secondary data get from K3 documents in thecenter company ofPT. Timah UPLB and KIP 16.Based on result of research can get some conclutions. First, explain safetyand health occupational system. Second, the implementation formula of FR, SRand IR to count total accident that lost from day work, percentage of accident fora month. Third, to use methode JHA, JSA and HIRADC for identification andcontrol occupational accident. And last, to arrange new SOP from analysis resultJHA, JSA, HIRADC and earlier SOP.

Estimasi Sumberdaya Batubara dengan Menggunakan Metode Cross Section di Pit 2 PT. Tambang Bukit tambi. Site Padang Kelapo. Kec. Muaro Sebo Ulu. Kab. Batanghari. Provinsi Jambi Calvin Maharza; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Tambang Bukit Tambi is a mining company which currently has been drilling to obtain coal distribution data and the amount of coal available. The drilling was carried out in an area of 50.8 hectares with 14 drill holes. To find out the amount and distribution of coal. resource estimation is needed. Modelling of 3D coal distribution and coal volume calculation can be use as consideration for mining. Estimation of resources and reserves of minerals important for ease of exploitation commercially of deposits of minerals, because the resources and reserve estimation results can determine investment and estimates the time required by the company in carrying out mine business This research uses cross setion method for calculating of coal volume and coal tonnage, with the help of image processing software that is minescape 4.11.9. the estimation must be made based on the number of blocks that are available after being corrected to the topographic limit. The total coal tonnage obtained in the study area is 3.360.240 tons and Overburden is 4.317.300 bcm. with 1.2 bcm/ton stripping ratio.Keywords : Estimation. Sumberdaya. Ordinary Kriging. variogram. CoalAbstract. PT. Tambang Bukit Tambi is a mining company which currently has been drilling to obtain coal distribution data and the amount of coal available. The drilling was carried out in an area of 50.8 hectares with 14 drill holes. To find out the amount and distribution of coal. resource estimation is needed. Modelling of 3D coal distribution and coal volume calculation can be use as consideration for mining. Estimation of resources and reserves of minerals important for ease of exploitation commercially of deposits of minerals, because the resources and reserve estimation results can determine investment and estimates the time required by the company in carrying out mine business This research uses cross setion method for calculating of coal volume and coal tonnage, with the help of image processing software that is minescape 4.11.9.. the estimation must be made based on the number of blocks that are available after being corrected to the topographic limit. The total coal tonnage obtained in the study area is 3.360.240 tons and Overburden is 4.317.300 bcm. with 1.2 bcm/ton stripping ratio.Keywords : Estimation. Sumberdaya. Ordinary Kriging. variogram. Coal

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