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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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IDENTIFIKASI BAHAYA, PENILAIAN RESIKO, DAN PENGENDALIAN RESIKO PADA AKTIVITAS TAMBANG BATUBARA DI PT. KIM KABUPATEN MUARO BUNGO, PROVINSI JAMBI Miftahul Jannah; Rijal Abdullah; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Based on the data obtained from the company, the data accidents that occurred between the years 2012-2014 there were 222 cases of accidents, as well as activities that are harmful to workers at risk of injury, lost work days, and the cost of repair tools. The causes of such unsafe acts and unsafe conditions of the workers. The purpose of this study were: 1) Revealing the dangers that occur in coal mining activities. 2) Uncover the risk of hazards that occur in the coal mining activities. 3) Disclose the value of the likelihood and severity of hazards that occur in the coal mining activities start from land clearing activities until the loading of coal in the stockpile.This type of research is descriptive with quantitative approach, in which data is collected or obtained from direct observation in the field and interviews with leaders and staff as well as employees of the company who are competent in connection with the object of research. The data is taken from the data mining activities, the risk of hazards that occur in the coal mining activities.Results of the study revealed that the risk of hazards that occur in the coal mining activities at PT. Kuansing core affluent who are at a high level going on the road hauling.

OPTIMALISASI MIXER DAN MAXIJET UNTUK DEVELOPMENT GROUND SUPPORT PADA TAMBANG GRASBERG BLOCK CAVE (GBC) PT.FREEPORT TEMBAGAPURA, PAPUA Teguh Indra Putra; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. One of the underground mining areas in PT Freeport Indonesia that uses the collapsing method is the Grasberg Block Cave (GBC).The shotcerete production target per day is 40m³ while the production achieved is 33m³. The method to get the optimization effort is done by checking the multiple regression relationship value of the Equipment Availability relationship to the productivity of the mixer and maxijet tools. From the regression results, it is estimated that the optimal working time to achieve shotcerete productivity target is 40 m³ per day. The results of the analysis show that the optimum conditions m in the Mixer and Maxijet devices the UA and PA values are at least 83% in order to achieve 40m3/day shotcrete production. To achieve UA and PA values of 83% so that the production of 40m3 shotcrete per day is needed, it takes real work 399 minutes to 500 minutes. In the case of repair (repair), to achieve ideal conditions required the addition of working hours to 720 minutes which was initially only 480 minutes. During working hours, the plan is 720 minutes, minimum actual working hours are 500 minutes and maximum standby is 100 minutes.Keywords: Shotcerete, Underground Mining, Productivity, Mixer and Maxijet Tools, Equipment Availability

Analisis Kebutuhan Alat Gali Muat dan Alat Angkut Menggunakan Simulasi Teori Antrian Pada Produksi Overburden di PT. Haswi Kencana Indah Kecamatan Sumay, Kabupaten Tebo Provinsi Jambi Arie Sefrizni; Tamrin Kasim
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Haswi Kencana Indah is a private company engaged in the mining business, especially Coal. In the process of transporting Overburden to disposal, there is a queue of garbage trucks and a long standby time on transport trucks, this can cause the productivity of the equipment to be small so that the Coal production target in September 2018 24,140 tons / month is not achieved. This is caused by the inefficient working time of mechanical devices. The target of this production is not achieved due to a combination of improper tools, road widths and road levels that do not meet the standards, causing the queue or waiting time for transport in front loading. One way to achieve the production target is to analyze the needs of the digging tool and the appropriate transportation equipment. Based on the results of the study, it can be concluded that the productivity of the Doosan 500 LCV excavator is 279.93 tons / hour and the productivity of 5 Mitsubishi Fuso 220 PS dump trucks is 139.57 tons / hour and the productivity of dump trucks has not been able to reach the target of 200 tons / hour. To increase the productivity of mechanical tools can increase the effective time of work and improve the composition of the equipment obtained by the productivity of 1 unit of Doosan 500 lcv excavator 251,14 tons / hour and 4 units of Mitsubishi Fuso 220 PS dump truck transport 287,73 tons / hour. From the results of this study it can be seen that the effective working time and work harmony of actual mechanical devices have not been maximized. Keywords: Queue Method, Work Efficiency, Match Factor, Production, Dump Truck.

Analisis Kinerja Manajemen Keselamatan dan Kesehatan Kerja untuk Mengetahui Penyebab Meningkatnya Kecelakaan Property Damage di PT. Cakra Bumi Pertiwi Site Bengkulu Utara Provinsi Bengkulu Renaldo Juliandi; Rijal Abdullah; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

From the research can be seen that the incidence of property damageaccidents increased. This is caused of unsafe conditions and unsafe work acts,inconsistent in supervising the K3 management system, lack of knowledge, employeeawareness and concern about K3. The absence of sanctions against employees whoviolate K3. The purpose of this study is to reveal whether PT. CBP has implementedK3 principles in accordance with the principles of K3 mine, reveals whethersupervisors and miners have implemented K3 principles, disclosing the extent ofoccupational risk, disclosing the causes of accidents, and disclosing the percentage ofunsafe and unsafe events.In carrying out this research, combined theory and direct interview withfield data, so that both of them got problem solving approach.Based on the results of the research conducted can be concluded thefollowing points. First, the factors that cause property damage accidents includehuman factors, equipment factors and environmental factors. Second, there are stillmany unsafe and unsafe practices. Third, the percentage of accidents for unsafe actsis 60.71% and for unsafe conditions is 39.29%. And the cause of the accidentproperty damage in PT. Cakra Bumi Pertiwi is a matter of implementation of K3policy in management, which subindicator is supporting activity, capabilityguarantee, and ability guarantee.

The Planning of Supply Requirments for Heavy Equipments and Costs Coal Mine to Reach The Production Target at Langkok Pit 1 Site PTBA UPO (Persero) Tbk, West Sumatra On 2017. Nuzul Sandria Sasra; 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 Bukit Asam (Persero) Tbk is a state-owned company engaged in the sector of a single market (captive market) which has 2 mining units, including the Ombilin Mining Unit (UPO) located in Ombilin, Sawahlunto, West Sumatra. Based on data from exploration of coal deposits carried out by PTBA UPO, one of the areas considered feasible to open is the Langkok Pit 1 UPO Site. Therefore, it is necessary to open a new mine so that the production target is reached. However, there is currently no planning for the needs of heavy equipment at the Langkok Pit 1 site. The purpose of this study is to determine the type and number of main tools and the costs needed. The research method used is the Applied Research method. In data analysis the calculation of the cycle time of mechanical devices is used to get the work productivity of the tool and the target of achieving hourly production of these mechanical devices and also as data in achieving the target mining plan per year. Mining activities used a combination of mining equipment, namely 1 Hitachi ZX330 excavator unit and 8 CWA 260MX UD dump truck units. The total rent that will be incurred per month in the needs of the equipment in August 2017 is Rp. 612.762.500,00 / month, in September is Rp. 637.273.000,00 / month, while in October it was Rp.588.252.000,00 / month, in November it was Rp. 637.273.000,00 / month, and December is Rp. 588.252.000,00 / month. So the total rental fee issued from August to December is Rp. 3.063.812.500,00. Keywords : Mining, Coal, Heavy Equipment, Costs, Production Targets

Evaluasi Coal Handling Facility (CHF) 2 Untuk Memenuhi Target Penerimaan Produksi Batubara Bulan Maret 2018 Ke Stockpile 2 Di PT. Bukit Asam, Tbk. Tanjung Enim, Sumatera Selatan Andre Agusli; Rijal Abdullah
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Coal handling activities at Muara Tiga Besar has done with two methods, coal from BWE’s bait will transport by BWE system to temporary stockpile MTB before it toward to reclaim feeder 1 and coal from mining front will transport by dump truck to reclaim feeder 2. Coal from MTB will transport to stockpile 2 by CHF MTB. Coal target production of stockpile 2 on March 2018 are 500.000 ton. Incompleteness of coal production on March 2018 caused by some factors, there are high of hitch hour at CHF’s path on March 2018, low capacity production of coal conveyor-22, and unoptimal setting of reclaim feeder speed. Research Methods used in this thesis is a quantitative research method. Efforts that can be made to achieve production targets in March are like increasing the daily work efficiency of reclaim feeder 1 which was originally 83.33% to be 92.85% so that the total rate of coal receipts that could be received by the coal handling facility 2 experienced an increase from 1,429.4 tons / hour to be 1,606.5 tons / hour. In addition, efforts that can be done are increasing the productivity of bulldozers, monitoring the mining front to avoid transporting rock packs, and synchronizing speed reclaim feeders.Keywords: Coal handling facility, Coal Mining, Reclaim Feeder, Production, Work Efficiency.

Evaluasi dan Rancangan Sistem Ventilasi Pada Lubang Tambang BMK-35 CV. Bara Mitra Kencana, Tanah Kuning, Desa Batu Tanjung, Kota Sawahlunto Andi Asmunandar; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

In underground mining activities required mine ventilation, it use to include fresh air needed by miners. Methane gas explosion has occured in CV. Bara Mitra Kencana on Wednesday, March 29, 2017. The tunnel location of explosion is currently contiguous to the location of the mine plan progress (BMK-35) that following the direction of coal deployment that has the potential of methane gas hazards, cause of that a good ventilation system design is required to prevent the explosion. After the evaluation there was a difference quantity of air entering and exit air, the air inside is 6,66 m3/s and the quantity of air outside is 6,33 m3/s. This is caused by ripped of the duct at the air intake is much as 6 points. Air temperature at the mine pit BMK-35 increased temperature of 1oC every 100 m of mine progress. Based on the evaluation results, the use of fan/blower with a capacity of 200 m3/min with a system of ducts using continue system every space 100 meters progress of underground mine. Based on the calculation the amount of air requirement is 4,05 m3/s while the venting capacity of the forcing fan and the suction vent (exhaust fan) is 12,02 m3/s. Based ;on that, we can concluded the addition of exhaust fan on canopy 3 already suffice the air requirement to support mining operational activities. Installation of the exhaust fan is doing to anticipate the accumulation of high methane gas, as one of the ventilation functions is to dissolve and bring out impurities from the gases in the mining area, so as to achieve a condition that is eligible to prevent the occurrence of gas explosions in minesKeywords: Evaluation, Ventilation System, Underground Mine, Velocity of Air, Air Volume

Evaluasi dan Optimalisasi Kinerja Crusher Lsc VI Dalam Upaya Memenuhi Kebutuhan Batu Gamping pada Storage Indarung VI , PT Semen Padang Agung Wijaya; Ansosry Ansosry
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract: PT. Semen Padang has just built a new crusher, productivity of 9475 tons / day to meet the production needs of the Indarung VI plant, but in reality the performance of the LSC VI Crusher is not optimal. For this reason, Crusher LSC VI performance evaluation is needed to determine the factors. In mechanical equipment productivity there are many factors that can influence, among others: work efficiency, operator efficiency, availability of equipment, acceleration of equipment, altitude of sea level, material type, road conditions, cycle time, etc. The actual productivity of the Komatsu HD 785-7 transport equipment for feeding material to the Limestone Crusher VI was 170.47 tons / hours but the loading and hauling ratio currently applied has not been able to meet the feed target for the Limestone Crusher of 1500 tons / hour. The actual productivity of Limestone Crusher VI is 1212.09 tons / hour and its effective production is 7655.98 tons / day. Productivity and actual effective production have not been able to meet the productivity target of 1500 tons / hour and an effective production target of 9475 tons / day. The actual tool availability of the Limestone Crusher VI includes mechanical availability of 79.50%, physical availability of 87.22%, use of available of 56.80%, and effective utility of 49.54%.Keyword : Crusher, Optimalitation, Produktifity, Belt Conveyor, Loading Hauling

Optimalisasi Kinerja Limestone Crusher IIIA (LSC IIIA) Dengan Metode Overall Equipment Effectiveness (OEE) Untuk Memenuhi Target Produksi Limestone Di PT. Semen Padang Kecamatan Lubuk Kilangan, Padang, Sumatera Barat Nefa Rizki Dian; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Semen Padang uses the open-pit mining method, namely quarry mining is a mining method that is carried out by extracting industiral or industrial mineral deposits. Mining meterial that has been mined will be crushed according to size through the crusher tool. The crusher tool used is a hammer crusher. Each crusher has a capacity of 1300 tons / hou on LSC II, 1500 tons / hour and 1700 tons / hour for LSC IIIA and LSC IIIB, and 2200 tons / hour for LSC IV. This research uses the overall equipment effectiveness method, because overall equipment effectiveness aims to measure whether the equipment is working normally. Overall equipment effectiveness world class standard is 85% with availability standard value 90%, perfomance rate 95%, and quality rate value 99.9%. the Overall equipment effectiveness value on the crusher tool is still very low at 45.216%.So, it needs a decrease in the breakdown value of 59.146% or 1 hours per day, from 2.45 hours per day and standby at 76.209% or to 0,67 hours per day from 2.82 hours per day. So that the value of overall equipment effectiveness increase at a fair rate of 60,089%.The point is that the crusher woks properly. Keywords: Crusher, Overall Equipment Effectiveness, LSC, Hours per day, Mining

KAJIAN TEKNIS PERALATAN TAMBANG UNTUK MEMENUHI TARGET PRODUKSI BATUGAMPING 550.000 TON/BULAN PADA AREA PIT LIMIT (15,15 HA) PT. SEMEN PADANG Divo Oktoberen; Tamrin Kasim; Ansosry Ansosry
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

The process of transporting limestone from Pit Limit area (15,15 ha) to the crusher unit LSC VI (Limestone Crusher VI) using a combination of 1 Excavator Hitachi 2500-6 unit with 4 units of Dumptruck Komatsu HD 785-7. The production target of limestone is 22.000 tons/day or 550.000 tons/month at Pit Limit area (15,15 Ha). Meanwhile, actual productivity of mechanical equipment is only 1.207,5 tons/hour or 18,112.5 tons/day. To realize the planned productivity improvement must be supported by the availability of sufficient mechanical tools to produce raw materials as desired. The efforts made are improve blast fragmentation to simplify the digging process of loading equipment, create a wider loading point, create a flatter haul road and less dusty, improve work efficiency and Effective Utilization (EU), optimize loading time and hauling time, and reduce dumptruck units to 3 units. Then the productivity of mechanical equipment increase to 2.064,83 ton/hour or 30.972,45 ton/day or 774.311,25 ton/month. It means the limestone production target can be achieved at Pit Limit area (15,15 ha). After improvement, the value of Match Factor between 1 unit of excavator and 3 units of dumptruck is MF = 1,1. This combination is more effectively applied than ever before is MF = 0.88.

Page 15 of 61 | Total Record : 609

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