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Journals Mining Engineering : 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.
Arjuna Subject : -
Articles 609 Documents
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Analysis of the Implementation of the Occupational Health and Safety Management System at PT Aneka Tambang Tbk. Gold Mining Business Unit (GMBU) Pongkor, Bogor West Java 2020 rizki adam; rijal abdullah
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i4.114130

Abstract

ANTAM has a full commitment to implement good mining practices in every operational activity of the Company. In performing every mining activity, ANTAM always considers the technical aspects & standardization of mining operations, conservation of mineral resources, commitment in maintaining occupational health & safetyof control method, namely elimination, substitution, engineering control, administrative control, and PPE. All mining safety statistics in 2010-2020 show safety performance statistics of ANTAM and its subsidiaries/ sub subsidiaries: 8 fatal accident, 24 serious accident and 47 (one) minor accident, frequency rate level FR: 25,12, ANTAM’s Severity Rate/ SR 214.06. TRIR (Total Recordable Incident Rate): 0.01. ANTAM always prioritizes the implementation of occupational health and safety principles in every operation of the Company. ANTAM constantly attempts to manage mining safety by proper standards and regulations. We have also classified the types of high risk activity in the Company’s workplace. The commitment to implement Occupational health and safety has brought good results. Antam managed to maintain a positive trend decline in the number of occupational accidents cases.
Kajian Teknis Geometri Peledakan Berdasarkan Analisis Blastability Index dengan Perhitungan RL Ash combine Vertical Energy Distribution (VED) Pada Penambangan Batu Kapur di Area 15.15 PT Semen Padang Bukit Karang Putih Kecamatan Lubuk Kilangan Kota Padang Fadel Muhammad; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i4.113942

Abstract

Dalam kegiatan peledakan ada beberapa macam indikator keberhasilan dari peledakan itu sendiri, antara lain tercapainya target produksi dan ukuran fragmentasi ideal yang ditetapkan pihak perusahaan. Untuk mendapatkan target produksi dan ukuran fargmentasi yang baik tersebut maka peran geometri peledakan menjadi parameter penting yang perlu diperhatikan. Penentuan geometri peledakan mulai dari burden, spasi, panjang kolom isian, stemming, tinggi jenjang, subdrilling, dan kedalaman lubang ledak serta powder factor yang dirancang harus memperhatikan karakteristik massa batuan dan distribusi energi bahan peledak yang digunakan. Berdasarkan pengamatan yang penulis lakukan di PT. Semen Padang di area 15.15, penulis melihat beberapa peledakan menghasilkan fragmentasi batuan yang dikategorikan boulder (>80 cm) hampir 30%. Padahal target yang diharapkan yaitu maksimal ukuran fragmentasi 80 cm, agar batu kapur yang telah diledakan dapat melewati crusher. Selain dari itu, beberapa dari hasil peledakan ditemukan retakan saja, sehingga digging time dan cycle time excavator menjadi lama dan produktivitas alat menurun serta mengakibatkan target produksi tidak tercapai. Untuk mendapatkan ukuran fragmentasi yang diharapkan perusahaan dan target produksi bisa tercapai, maka dilakukan perancangan geometri peledakan yang dikaji berdasarkan analisis blastability index batuan dengan menggunakan perhitungan metode RL Ash combine metode Vertical Energy Distribution (VED). Berdasarkan dari rancangan RL Ash didapatkan burden 4 m ; spasi 5 m ; kedalaman 10,5 m ; tinggi jenjang 9,5 m ; subdrilling 1 m dan powder factor 0,36 kg/m3. Dari rancangan Vertical Energy Distribution terdapat lima rekomendasi diantaranya VED 66 %, VED 70%, VED 73%, VED 75% dan VED 77%. Dari lima rekomendasi tersebut penulis memilih VED 70%  dengan isian setinggi 7,3 m dan stemming 3,2 m serta didapatkan prediksi fragmentasi tidak lolos ukuran 80 cm menurut Kuzram 1,2 % dan 5,1% menurut prediksi splitdesktop.
Identifikasi Bahaya, Penilaian Risiko Terhadap Keselamatan Kerja Coalgetting Di Tambang Terbuka PT. Bima Putra Abadi Citranusa Lahat, Desa Lubuk Betung, Kecamatan Merapi Selatan, Provinsi Sumatera Selatan. ANGGA YUJA WIGUNA; Fadhilah Fadhilah; Rusli HAR; Admizal Nazki
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i4.113690

Abstract

Abstrak. PT. Bima Putra Abadi Citranusa is a subsidiary of the Bomba Group, this company is a domestic mining company engaged in coal mining. PT. BPAC started operations in July 2020 using the open pit mining method. The accident rate at PT. Bima Putra Abadi Citranusa in 2020 were 12 accidents that occurred in September – December 2020. The data collection technique used a work activity questionnaire. The results of data collection that have been obtained from surveys at mining sites will be arranged systematically and can be used as material for analysis in seeing the level of work safety (K3) in the process of mining activities using the HIRARC method. Identification of hazards and risks 38,23% is a hazard condition that has the lowest severity there are 13 conditions contained in the process of mobilizing heavy equipment, the process of transporting coal with DT, the process of dumping in the stock rom, the pump installation process, the process of driving the LV unit. Identification of hazards and risks 35,29% is a hazard condition that has moderate severity there are 12 hazard conditions contained in the process of mobilizing heavy equipment, loading process using excavators, coal hauling process with DT, dumping process in stock rom, pump installation process, process driving the LV unit Identification of hazards and risks 14,70% is a hazard condition that has a significant severity there are 5 hazard conditions contained in the process of transporting coal with DT, the process of driving an lv unit, activities at night activities. Identification of hazards and risks of 11.76% is a hazard condition that has a high severity level, there are 4 conditions contained in the process of loading with an excavator into the DT, the process of transporting coal with the DT, the pump installation process, activities at night. Kata kunci: Coal Mining, Hazard Identification And Safety Risk Assessment, HIRARC, Hazard Potential.
Evaluasi Dan Rancangan Sistem Ventilasi Pada Tambang Batubara Bawah Tanah Lubang BT 02 PT. Nusa Alam Lestari, Kota Sawahlunto, Sumatera Barat. Carles Trisis Caniago; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 6, No 3 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i3.112557

Abstract

PT. Nusa Alam Lestari is an underground coal mining company located in Batu Tanjung Village, Talawi District, Sawahlunto City, West Sumatra. This research aims to reveal the quality and quantity of air, reveal the maximum ventilation requirements that can be supplied by fans according to the currently installed specifications to channel fresh air to the front work and describe the current model of the ventilation system and the design of the future ventilation system according to changing field conditions in the hole. BT 02 PT Alam Nusa Lestari. From the results of temperature measurements in the BT 02 Utama (BT02U) 30.10c hole and the BT 02 Companion hole (BT02P) 280c. With an average humidity in BT02U which is 97.74% and in BT02P 89.0%. Based on Kepmen 1827 k / MEM / 30/2018 and KepDirJen Minerba of the Ministry of Energy and Mineral Resources Number 185.K / 37.04 / DJB / 2019. The specified temperature values are 180C-270C and a maximum relative humidity of 85%. From the calculation results, the air requirement in the BT02 U hole is 11,1165 m3 / s, the BT 02 P hole is 8,1166 m3 / s, and the air requirement to dilute methane gas from the BT 02 hole is 2,397 m3 / s, the oxygen content is 20.9% and It is in accordance with the air requirements for workers stipulated in the Ministerial Decree 1827. Dirty air resulting from mining activities is sucked out through the ventilation holes and replaced with clean air that enters through holes BT 02 U and BT 02 P that have been installed with blow blowers.
ANALISIS BAHAN GALIAN TRAS UNTUK BAHAN BAKU INDUSTRI SEMEN BERDASARKAN SIFAT FISIK DAN KIMIA DI PO. JONI EFENDI, KABUPATEN PADANG PARIAMAN, PROVINSI SUMATERA BARAT Roofi Anabata Zurdi; Fadhilah Fadhilah Fadhilah
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i4.114036

Abstract

PO. Joni Efendi is one of the companies that engaged in tras mining in West Sumatra Province. Tras is a C quarry material that can be used in the cement industry. Tras generally have different levels of compounds, physical properties, and colors in each sediment area. This study aims to analyze tras mining materials in the cement industry based on chemical properties and physical properties to obtain the level of quality of tras related to physical properties and color. The research method used is an applied studies and then analyzed based on the study of existing theories. Data collection techniques from this study began with the study of literature, then the collection of data that includes the sampling of tras from 9 points based on color differences and will be analyzed based on the levels of chemical compounds and also their physical properties. The data analyzed will be compared with tras quality standards according to ASTM C618-92a. After the data was analyzed, the tras level in the research area was sufficient and in accordance with the quality standards of tras according to ASTM C618-92a which is 86.285%, this level has also been able to meet consumer demand in the cement industry. Color differences in tras materials are caused by differences in the levels of compounds Si, Fe,Fe2O3 , moisture content and tras that have the best quality are light brown tras with quality content = 86, 963%, moisture content = 21,30%, and density = 1,99 g/cm3.
ANALISIS KESTABILAN LERENG PADA SEKITARAN LUBANG BMK 35 DI CV. BARA MITRA KENCANA (BMK), TANAH KUNING, DESA BATU TANJUNG, KECAMATAN TALAWI, KOTA SAWAHLUNTO Eggi Marcelleno; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i4.113689

Abstract

Based on the results of observations at BMK 35 CV. Bara Mitra Kencana, the authors conducted research on BMK 35 slopes where slope height (H) = 35 m and slope (a) = 65°. Referring to the description of the BMK 35 supervisor, in mid-2018 a large landslide occurred which resulted in tunnel 1 and tunnel 3 being completely buried. As a result of this incident, BMK 35 stopped producing for half a year due to road and tunnel access improvements. This incident occurred due to rainy weather at the mine site in mid-2018 and the absence of a good geotechnical design for the BMK 35 slope. Based on the data from the physical and mechanical properties of rock, the siltstone natural density was 22,84 KN / m³, the saturated density was 23,79 KN/m3, the dry density value was 20,17 KN / m3, cohesion (c) = 0.0419 Mpa and internal friction angle (ϕ) = 44,45°. In determining the value of the actual slope safety factor using software rocscience slide 6.0 with the janbu simplified method, the saturated condition slope safety factor value is 1,192, natural condition is 1,209 and dry condition is 1,265. So it can be concluded that the slope is unstable. The author provides two recommendations for slope improvement, namely, single slope and overall slope. Recommendations with a single slope is use a slope height of 35 meters, angle of slope 58° and get a FK 1,318 in natural conditions, 1,300 in saturated conditions, 1,375 in dry conditions. Recommendation overall slope is to divide into 2 single slope where each slopes have heights 17.5 meters and angle of the single slope is 65° and 51° for the overall slope. When in natural conditions, FK on a single slope is 1,559 and 1,403 for the overall slope. When conditions are saturated, FK on a single slope is 1,529 and 1,384 for the overall slope. When conditions are dry, FK on a single slope is 1,656 and 1,464 for the overall slope.
Optimalisasi Produksi Alat Gali-Muat dan Alat Angkut pada Proses Pengupasan Overburden untuk Mencapai Target Produksi per Bulan pada Penambangan Batubara PT. Pengembangan Investasi Riau Coal Mine Project Desa Pematang Benteng Kecamatan Batang Peranap Kabupaten Indragiri Hulu Provinsi Riau Agung Pujangga; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 6, No 3 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i3.112665

Abstract

Based on field observation, The production of stripping overburden at PT. Pengembangan Investasi Riau on November 2020 didn’t reach target. It was caused by the high number of losstime that occur during the production process.Digging-Loading Equipment used for Stripping Overburden on one of fleet is 1 Unit 1 unit Excavator Kobelco SK480LC (EE01) with Hauling Equipment, 9 unit Dump Truck Quester CWE 370 (DT78, DT81, DT84, DT85, DT86, DT87, DT89, DT90 dan DT91). To determine potential of improvement from a production process and effectiveness of using equipment, then an analysis called Overall Equipment Effectiveness (OEE) was carried out. OEE value for actual Digging-Loading Hauling Equipment indicates a very low value (< 85%). Next, used the Fishbone Diagram to find cause and effect from high number of losstime that occurs on the Equipment. Finally, the loss time is repaired due to human factors with the smallest standard tolerance method. After analyzing and improving with these methods, the production of Stripping Overburden on the fleet theoretically increased ± 2000 bcm from the previous production. OEE value still shows a fairly low value (< 85%) from World Class OEE Standard (> 85%). In addition, operational cost for digging-loading dan hauling equipment also increase along with the increase in production.
Evaluasi dan Rancangan Sistem Ventilasi pada Lubang Tambang CBP-03 PT.Cahaya Bumi Perdana,Kota Sawahlunto olivia julianti; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 6, No 3 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i3.112523

Abstract

Abstract. PT. Cahaya Bumi Perdana uses only one ventilation system, namely the blow ventilation system which aims to provide and flow fresh air into the mine for workers' breathing and other processes that require air. Based on the initial inspection of the ventilation system used in the CBP-03 hole using only the blow ventilation system, the researchers also found duct leaks at 3 points, which resulted in loss of air circulation. This causes the quality and quantity of air to decrease, as well as the effective temperature and relative humidity to increase beyond the threshold. In June there was an explosion and the location of the mine hole where the explosion had occurred is currently close to the location of the mine progress plan following the direction of the spread of coal which has potential hazards methane gas. From the results of the air quality evaluation, it can be concluded that the effective temperature and relative humidity in canopy 2, the branches and front work have exceeded the threshold value regulated by Kepmen No.1827 K / 30 / MEM / 2018, namely the effective temperature ranges between 18-24 ° C with a maximum relative humidity of 85%. From the evaluation results, the quantity of air in and out is the same, amounting to 6.06 m3 / sec, From the results of the need for air on the front of work, the need for air for breathing 3 workers per shift is 0, 10 m3 / sec. Air requirement needed to dilute methane gas is 0.24 m3 / sec. The overall air requirement for the equipment in the CBP-03 mine hole is for 1 unit jack hammer = 1300 watts = 1.743 HP = 1.743 x 3 m3 / minute = 0.08715 m3 / sec. From the results of the design of the ventilation system using autocad 2007 the total quantity of air intake is the air entering the tunnel canopy 1 maintained at 6.06 m3 / sec plus the quantity of air throughout the front duct from the available equipment with a total quantity of 3.03 m3 / second. So the total amount of intake air from the design after the addition of the fan is 9.09 m3 / sec. Meanwhile, the need for air for workers and mining supporting equipment is 0.73 m3 / sec. The need for safe and effective maintenance of ventilation equipment and providing backup ventilation equipment and the availability of a backup power source. If one day the equipment breaks down, a replacement will be available during an emergency, so it doesn't stop air circulation in the mine pit.   Keywords: Ventilation System, Evaluation, Air Requirement, Autocad 2007
ANALISIS STATISTIK MULTIVARIATE UNTUK MENDAPATKAN WAKTU LOSSETIME OPTIMAL ALAT GALI MUAT DAN ALAT ANGKUT DALAM MENCAPAI TARGET PRODUKSI PENGUPASAN OVERBURDEN DI PIT TIMUR PT. ALLIED INDO COAL JAYA, PARAMBAHAN, SAWAHLUNTO M. Ilham Khalid; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i4.114124

Abstract

Based on the overburden stripping production data in the East Pit, Mining Work Unit PT. Allied Indo Coal Jaya. October 2020 for 2 mining fleets, are around 77.963,41 Bcm. From the actual production above, it is known that the overburden production target for 2 mining fleets is 110.000 Bcm, so it can be concluded that the stripping production target in October 2020 was not achieved. Based on data on working hours of mining equipment, the percentage of utilization of the available working time of the EU (Effective Utilization) for 2 mining fleets is 72% and 75%, respectively. From these problems, the percentage of utilization of the EU's available working time (Effective Utilization) has not been used optimally. From the problems above, it is necessary to do an optimal losstime analysis to meet the production target of overburden stripping. The analysis that will be used in this study is multiple linear regression analysis using the least squares method in estimating multiple linear regression coefficients. The purpose of this analysis is to obtain an optimal mathematical model of losstime in meeting the production target of overburden stripping in October 2020.Keywords:  Production, lossetime, optimal time, linear regression analysis double, least squared
Analisis Kestabilan Lereng Menggunakan Metode Bishop Pada Area Penambangan di PT. Ghaniyyah Nusantara Indah Jorong Gantiang Baruak Lubuak Aluang Sumatera Barat pinto prinanda; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i4.113941

Abstract

PT. Ghaniyyah Nusantara Indah is one of the companies engaged in the procurement of goods and services which was founded in July 2018 in the city of Padang, one of the companies engaged in the clay mining business in the city of Padang. Located in Joronggantiang Baruak, Lubuk Alung, West Sumatra. PT. Ghaniyyah Nusantara Indah produces when the slopes formed as a result of the mining process or which are a means of supporting mining operations are unstable, it can cause disruption to production activities, as well as endangering work safety. The actual geometry in the field has an overal slope height of 18,064 m with a slope of 69° and the actual slope value for saturated slope is 1.086. This study aims to plan the geometry of the overal slope to obtain a safe slope FK value of 1.25.This research was conducted using the Bishop method to obtain the FK value of the overal slope. The actual slope geometry is changed, for the overall slope height is 18.064 m with an angle of 69˚ so that the FK value in saturated condition is 1.086. Furthermore, slope modification was carried out by making a bend on the slope using the Bishop method and the FK value for the overall slope in a saturated condition was 1,264. From the data analysis, the results for single slope 1 with a height of 7,982 obtained FK in a saturated condition of 1,938, while for single slope 2 with a height of 10,081 obtained FK in a saturated condition of 2,048. So it can be concluded that after redesigning the slope geometry using the Bishop method, the slope can be declared in a safe condition.

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