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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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Evaluasi Material dan Daya Dukung Tanah untuk Base Coarse Jalan Tambang di PT. Kalimantan Prima Persada SiteMining Asam – asam (MASS) Tommy Joetra; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstrak. PT Kalimantan Prima Persada (PT. KPP) is a subsidiary of PT Pamapersada Nusantara which was established on September 9th, 2003. The company uses open pit method, the hauling overburden process uses 4 fleet with overburden (OB) production target of 40,000 BCM / day. In mine road maintenance the company does not yet have a reference for the selection of materials used for the base coarse of the mine road. The company uses the largest transport equipment, HD 785 which has a load of 529.33 kN / set, the CBR value of the road that can support the load is 36%, but the actual field found in the mine road CBR value ranges from 20% - 30% which can cause damage such as the occurrence of deflection, hollow roads and bumpy roads, so that it can increase the circulation time of the transport equipment and automatically reduce the productivity of the conveyances. Overburden's production target for 1 fleet is 10,000 BCM /day, but due to damage to the actual Anthea road in the production field for 1 fleet it does not meet the target.From the Dynamic Cone Penetrometer (DCP) test conducted on Anthea road using rover 1 and rover 2 material, the average CBR was 43.2%, while on the Gotik road using rover 3 material, the CBR average was 25%. Based on the calculation before the repairs on the Anthea road, the circulation time of 978.1 seconds was obtained, Overbuden production was 9,734 BCM /day.After the soak test, the material that can be used for the base coarse of the mine road is obtained, namely lower material 2, Rover 1 and rover 2 and mine road repairs with the addition of base coarse thickness, road compaction and scrubbing obtained decline in transport time to 910.5 seconds so overburden production increases to 10,457.41 BCM /dayKeywords :Base Coarse, CBR, DCP, Productivity, Production

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
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

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

OPTIMALISASI PERALATAN TAMBANG DENGAN METODA OVERALL EQUIPMENT EFFECTIVENESS (OEE) DI PIT 1 PENAMBANGAN BATUBARA BANKO BARAT PT BUKIT ASAM (PERSERO) TBK TANJUNG ENIM SUMATERA SELATAN Benti Jul Sosantri; Dedi Yulhendra; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Batubara merupakan salah satu sumber energi yang sangat potensial dalampemanfaatannya. Batubara banyak dimanfaatkan untuk berbagai keperluanproduksi mulai dari industri kecil hingga besar dan sebagian besar batubara diIndonesia telah diekspor hampir ke seluruh dunia antara lain ke negara-negaraAsia dan Eropa. Salah satu tambang batubara yang ada di Indonesia yaitu PTBukit Asam (Persero) Tbk.Proses produksi batubara PT Bukit Asam tepatnya pada Pit 1 Banko Baratmenggunakan alat gali muat excavator Komatsu PC 400 LC serta alat angkutdump truck Scania P360 dengan tujuan untuk dapat meningkatkan hasil produksiyang maksimal secara konsisten, tetapi kondisi aktual dilapangan tidaktercapainya target produksi yang telah ditetapkan setiap bulannya karenadisebabkan oleh beberapa faktor seperti manusia, lingkungan, peralatan, dansistem, dengan demikian perlu dilakukannya peningkatan produksi denganmelakukan perbaikan terhadap beberapa faktor tersebut. Salah satu metoda yangbisa digunakan adalah metoda Overall Equipment Effectiveness (OEE).Overall Equipment Effectiveness adalah metoda pengukuran efektivitaspenggunaan suatu peralatan. OEE dikenal sebagai salah satu aplikasi programtotal productive maintenance kemampuan mengidentifikasi secara jelas akarpermasalahan dan faktor penyebabnya sehingga membuat usaha perbaikanmenjadi terfokus merupakan faktor utama metode ini. Metode ini diaplikasikansecara menyeluruh oleh banyak perusahaan di dunia. Pada penelitian kali iniperhitungan yang dilakukan adalah menghitung produktivitas tanpa metoda OEEselanjutnya dengan metoda OEE. Objek penelitian adalah alat gali muat excavatorKomatsu PC 400 LC dan alat angkut dump truck Scania P360. Dari hasilperhitungan diperoleh nilai OEE masing-masing peralatan masih < 85% belummencapai nilai OEE kelas dunia >85%, dapat disimpulkan bahwa keadaanperalatan kurang baik. Sebaiknya dilakukan perbaikan terhadap waktu standbydan breakdown alat.

Analisis Korelasi Overbreak Terhadap Yield Zone Pada Area 601 Crusher Complex Tambang Bawah Tanah Grasberg Block Cave PT. Freeport Indonesia Zet Rahmadanil; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Freeport Indonesia uses two mining systems, namely open pit and underground mining. Underground mining generally uses the block caving method. One of the facilities built on the GBC underground mine is Crusher. The crushers used in the GBC underground mine area are Gyratory type crushers. This crusher is located at location 601 at the level of 2760-2700 masl. Based on the results of observations in the field, it was found that the frequent occurrence of differences in tunnel size between the design and actual field 601 complex crusher is a fix facility opened by blasting. In addition, over break causes a change in the depth of the zone that must be supported, so that an equation is needed which can be used to determine the depth of the zone that must be supported. In the correlation analysis, the highest overbreak was 24.84%. The resulting effect is that the overbreak increases, the yield zone also increases in depth, from the initial design 2,073 meters to 3,127 meters after overbreak. The equation obtained from the overbreak correlation and yield zone is Y = 9,6727X2 – 6,751X + 21,129. Where Y is the maximum overbreak percent value that can be secured by a buffer. Recommendation equation Y = 9,6727X2 – 6,751X + 21,129 as a new parameter in the geotech department to provide buffer recommendations. Keywords: Overbreak, Yield Zone, Geotechnical, Correlation, Underground Mining

Perencanaan Dan Biaya Reklamasi Lahan Bekas Tambang Area Tambang Batubara PT. Baturona Adimulya Desa Supat Barat Kecamatan Babat Supat Kabupaten Musi Banyuasin Ebran Alkad; Tamrin Kasim; Yunasril Yunasril
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT. Baturona Adimulya is a coal mining company located in West Supat Village, Babat Supat District, Musi Banyuasin Regency. PT. Baturona Adimulya has a Mining Mine with an area of ± 3,476 ha that has not been functioned. Current land conditions have elevation of 11 meters with slope ± 12% so that on the slope of the land, when the summer causes dust and rainy season cause erosion. The company plans to reclaim the former mine land. However, in the Mining Closure Plan document, it is mentioned that on this land the new planting plan takes into account the planting of pioneer plants (budding plant) ie sengon, while for planting of nucleus reclamation plants has not been determined between oil palm or rubber. Therefore, in the reclamation effort on ex-mining land, it is necessary to make good planning with planting of plants in accordance with the characteristics of the land. The technical planning of reclamation activities starts from knowing the characteristics of the soil, the arrangement of the land by leveling the condition of the embankment, then repairing the slope by making terracing, cover crop covering. Furthermore, the revegetation process starts from pengajiran, excavation planting hole, planting, and maintenance (2 years after the seed planting). Based on the results of laboratory testing, the characteristics of ex-mining land are suitable for planting rubber or oil palm plantations. Based on the calculation in the reclamation planning of ex-mining land by revegetation, the total cost is Rp. 507.372.156.00 for oil palm with sengon laut, and Rp. 505.052.919,00 for rubber with marine sengon.Keywords: ex-Mining Land, Reclamation Plan, Revegetation, Cost, Mining Closer

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
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

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.

EVALUASI KINERJA CRUSHING PLANT DAN EXCAVATOR HITACHI ZAXIS 110 MF UNTUK PENGOPTIMALAN HASIL PRODUKSI DI PT. AMAN TOEBILLAH PUTRA, DESA TANJUNG BARU, KECAMATAN MERAPI BARAT, KABUPATEN LAHAT, PROVINSI SUMATERA SELATAN Putri Irma; Tamrin Kasim
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Aman Toebillah Putra has a processing plant with a production target of 300 tons / hour. Whereas the January 2018 crusher report is not optimal. The less than optimal performance of the unit is caused by many factors that inhibit the work process of the processing plant. The impact of less optimal production from the crushing plant affects consumer demand for coal. So this is the background of the author to conduct an evaluation of the achievement of the crushing plant production target to meet the production target planned for 2018 at the crushing plant of PT. Aman Toebillah Putra. The type used in this study is the type of applied research. Where applied research is done with the intention of applying, implementing or testing theory by analyzing the supporting factors of the production of crushing plants such as cycletime, support tools, belt conveyors, actual field conditions such as ROM and stockpile conditions. Actual production of support equipment and crushing plant at PT. Aman Toebillah Putra is 127 tons/hour and 273.18 tons/hour for January 2018 and still does not meet the 2018 production target of 300 tons/hour. Availability of crushing plants with a mechanical avaibility value of 97%. Physicl avaibility value is 98%. The value of used of avaibility is 52%. The value of effective utilization is 51%. Availability of support with a mechanical avaibility value of 100%. Physical value is 100%. The value of used of avaibility is 51%. The value of effective utilization is 51%. To fulfill the 2018 production target of 300 tons/hour, an evaluation of the crushing plant and support of Hitachi Zaxis 110 MF excavators is carried out. Evaluation conducted for support tools is the replacement of Hitachi Zaxis 110 MF excavator which has a 0.5 m3 bucket size into a Caterrpilar 320C excavator with 0.9 m3 bucket size so that loading time can be faster, and support tools can still do other work so that production targets what the company wants can be achieved. Whereas for the crusher unit there is no further improvement because it supports the company's production target of 300 tons/hour. Keywords: Production, Losstime, Optimal Time, Coal Mining, Crusher

RANCANGAN PIT MUARA TIGA BESAR SELATAN BULAN JUNI TAHUN 2015 UNIT PENAMBANGAN TANJUNG ENIM PT BUKIT ASAM (PERSERO) TBK SUMATERA SELATAN Riandy Kurniawan; Dedi Yulhendra; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT Bukit Asam (Persero) Tbk is an Indonesia-based company primarily engaged in coal mining industry. Methods used in open pit such as conventional and continuous mining. This conventional method is conducted by using backhoe and dump truck while for continuous mining used Bucket Wheel Excavator (BWE) and Conveyor. In January 2015, Tambang Muara Tiga Besar Selatan used conventional method such as backhoe and truck. In an effort to increase coal recovery, it is necessary to do broadening area in Tambang Muara Tiga Besar Selatan in order to get more company’s profit. PT Bukit Asam (Persero) Tbk therefore plans to widen Tambang Muara Tiga Besar area for short term in June 2015. This research is conducted to make open pit design, calculate volume of burden and coal, disposal design, and also design mine haulage roads. Based on the result of analysis and calculation that has been done, elevation of pit design is amount of 62 mdpl to 0 mdpl. The total volume of burden is 1.500.000 BCM and tonnage of coal is 375.000 tons derived. The stripping ratio value is 4:1. The disposal area consist of two sections including first priority and second priority. The distance between mining front with disposal area is 1,97 Km. The width of haulage roads for two strips which appropriate with The American Association of State Highway and Transportation Officials (AASHTO) is 30 meters, including trench and dike.

Analisis Implementasi Keselamatan dan Kesehatan Kerja di Tambang Batubara Bawah Tanah PT. Cahaya Bumi Perdana dalam Rangka Pembentukan Sistem Manajemen Keselamatan dan Kesehatan Kerja Andri Van Deni; Rijal Abdullah
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. The mining has to identify the hazards, assess the associated risks and bring the risks to tolerable level on a continuous basis. The number of work accidents in the company are tend to increase, not only that statistic data but also the effectife temperature between 27-29 oC in the tunnel, dangerous mining gases, and lack of use of personal protective equipment by workers, and lack of identification of hazards in some work environments. Based on the problem, this study aims to reveal the application of the company's OSH, statistics on workplace accidents, potential hazards in the work environment and recommend several standard operating procedures. The results of work accident statistics at PT Cahaya Bumi Perdana from 2012-2017 showed that there were fluctuations in the severity and frequency of accidents, with an average FR value is 39.6 and an SR value is 38 days lost. The hazards cannot be completely eliminated, but the hazards of the work environment can be minimized. in this research we are using JSA and JHA methods to identifying and analysing the hazards associated with an activity. JSA and JHA used to identify work hazards in ventilation, supporting systems, lori transportation, and coal replacement. After doing the hazards identification, to controlling it will be given a recommendation. Not only made a hazards identification but also to creating a Standard Operating Procedure for a few jobs. With analyze Both of that requirement, it should be making an eazy ways to forming a management system of occuptional safety and health.Keywords: Safety, Health, Hazards, Mining, Underground

Analisis Lubang Bukaan Decline Channel (CH) 677 Blok Cikoneng PT. Cibaliung Sumberdaya, Banten Annisa Hanim D; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

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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