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All Journal Journals Mining Engineering : Bina Tambang Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering
Saldy, Tri Gamela
Universitas Negeri Padang
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Engineering Industrial & Manufacturing Engineering

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Evaluasi Geometri Jalan Angkut Komatsu HD785-7 Dari PNBP 4 Ke Crusher 6 Tambang Batu Kapur PT. Semen Padang. Ryan Markah; Raimon Kopa; Tri Gamela Saldy; Rudy Anarta
Journals Mining Engineering : Bina Tambang Vol 7, No 3 (2022): 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.v7i3.120208

Abstract

Every mining activity always requires a haul road to move the minerals to be produced. PT. Semen Padang is an open-pit mining company that produces limestone or limestone as a cement making material. One of the mining activities that can affect the production target is the transportation process. From the results of observations about the geometry of the PNBP 4 to Crusher 6 haul roads, several non-ideal road geometries were found that could affect the production achievement. The non-ideal condition of the haul road geometry found is, the condition of the straight road is 18.9 meters wide, while the ideal is 18,025 meters. Then the corner with a width of 22.8 meters, while ideally 26,154 meters. Then the road slope is found to be 21.8%, while ideally it is 10-12%. The condition of some of these road geometry factors affect the cycle time of the material transport process. Where the condition of hauling the contents along the haul road takes 7 minutes 48 seconds. While the condition of empty hauling takes 5 minutes 23 seconds. In the comparison of actual field data with grade calculation results, it was found that there were still road grades that were not ideal, namely in the segment 25-27. Then to achieve the ideal cross slope value of 2%, then the height difference between the left and right roads to the haul road axis that must be made is 18 cm. Based on the results of the evaluation of the haul road geometry from PNBP 4 to Crusher 6, it can be concluded that there are actual road conditions that are not in accordance with the ideal calculation standard. Therefore, it is necessary to increase the width on the straight condition road and increase the width on the bend condition road. In the superelevation section, the height difference that must be made between the inside and outside of the haul road bend is 1,02 meters. Then to overcome the runoff water that inundates the haul road during rainy weather, it is necessary to make several drainage channels.
ANALISIS KELAYAKAN INVESTASI PADA KEGIATAN BATUBARA KUD SINAMAR SAKATO DENGAN METODA NPV Fendri Amir; Tri Gamela Saldy
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.531

Abstract

KUD Sinamar Sakato is one of the companies engaged in coal mining using an open pit system. The company has total reserves of 8,431,610 million tonnes. Mining at this company began in January 2021 with a production target of 400,000 tons of coal per year, but only reached 200,000 tons of coal in December 2021. KUD Sinamar Sakato realizes that mining companies require a lot of money, so an investment feasibility analysis is needed to determine whether the mine is economically feasible. , technical and environmental. The method used in this study is to use the Net Present Value. The NPV value in this study is greater than 0 or Rp. 496,473,602,258.14, which means that the project investment is considered feasible or profitable. The PBP value required by the company for return on investment is 2.13 years. The results of this investment feasibility analysis are profitable so that they can become a reference for the company to continue the project.
Evaluasi Kemampuan Alat Gali Muat untuk Pencapaian Target Produksi Limestone Menggunakan Metode Overall Equipment Effectiveness (OEE) pada Bukit Karang Putih PT. Semen Padang Fachri Diwanda; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): 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.v8i1.122157

Abstract

Observation data for limestone production in the PNBP block of PT. Semen Padang did not reach the target in August 2022 due the low effective working time of the excavator, which was 278.7 hours/month for the Hitachi EX 2500 and 296 hours/month for the Caterpillar 6030 Excavators out of 558 hours/month available working time. Analysis of the productivity of working hours of tools needs to be done to overcome these problems,, one of which is the Overall Equipment Effectiveness (OEE) method to measure tool performance and fishbone diagrams to identify obstacles during production. The results showed that the actual productivity was 601,527 tons/month. Fishbone diagram analysis shows that there are inhibiting factors that cause high loss time, including method, equipment, environment, and human factors. After improving the standby delay time value of the Hitachi EX 2500 (EH 06) Excavator and Caterpillar 6030 (EC 03) excavator, the total loss time was reduced to 28.8 hours/month and 29.2 hours/month, respectively. increased tool uptime. Thus, the OEE value increased to 40% and 43%. Thus, overall limestone production increased by 1,317,693 tons/month, which means the target has been reached. The increase in the OEE value is still low when compared to world class standard OEE values, at 85% and still needed improvement.
Peningkatan Kapasitas Produksi Alat Angkut Untuk Mencapai Target Produksi 5000 ton/bulan Pada Kegiatan Galian Clay Menggunakan Metode antrian pada Tambang IUP OP Jumaidi, Gunuang Sariak, Sumatera Barat. Muhammad Deri Frasetia; Tri gamela saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): 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.v8i1.122194

Abstract

IUP OP Jumaidi is one of the mining business licenses engaged in mining, especially mining and clay trading, which is located in Gunung Sarik Village, Kuranji District, Padang City, West Sumatra Province. Based on field observations at the IUP OP Jumaidi, the authors found that production data in December 2021 produced only 2689.57 tons, while the production target to be sent to PT Semen Padang was 5000 tons/month. The Jumaidi IUP is currently experiencing several obstacles not achieving its production target caused by several factors, including weather factors, social factors, dust, work efficiency, poor road access, and hauling time for transportation equipment. The effective working time is 160 hours/month. Meanwhile, the actual effective working time is 120 hours/month. To get optimal production results, the efficiency and capabilities of the tools used must be considered. IUP OP Jumaidi has 4 excavators and 16 trucks for Loading and Hauling activities. Based on the author's observations IUP OP Jumaidi uses 1 excavator (excavator) serving 6 trucks in 1 place, this results in not achieving the production targets set by the company, from the author's observations there are problems with the waiting time of the tool (delay) on loading 3-5 minutes which which is very different from the company's rule of 1-2 minutes. Furthermore, the problem encountered by the author is the production of the means of conveyance, which is equal to 2617.472 tons / month, the match factor is 0.043 and the actual effective working time of the digging and conveyance equipment is 70%, this is not in accordance with the company's provisions, which is equal to 80%. The actual productivity data the means of transportation is 5941,097 tons/month. The calculation of the effective working time the dumptruck is 46,75 hours. The match factor value obtained is 0.17.
Analisis Kestabilan Lereng Kawasan Bukit Tambun 01 PT Nusa Alam Lestari Menggunakan Metode Sederhana Janbu Di Desa Salak Kecamatan Talawi Kota Sawahlunto Provinsi Sumatera Barat Yordi Hanif; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): 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.v8i1.122003

Abstract

PT. Nusa Alam Lestari merupakan perusahaan pertambangan dalam negeri yang bergerak dibidang penambangan batu bara. tahun 2004 dengan eksplorasi lebih lanjut dari PT, Nusa Alam Lestari mulai menjelajahi wilayah Sapan Dalam. Bukit Asam Persero dan Surat Keputusan Walikota Sawahlunto Nomor: memperoleh hak pengusahaan Bukit Asam Persero pada tahun 2006. 05.03.PERINDAGKOP. tentang Pemberian Kuasa Pertambangan Eksploitasi, tanggal 27 Maret 2006 seluas kurang lebih 100 hektar (KW 1373 NAL 3602). Penulis menemukan lubang dengan ketinggian kurang lebih 30 meter dan kemiringan 78 derajat di permukaan lereng Bukit Tambun 01 di ruang yang diizinkan oleh PT Nusa Alam Lestari. Dikhawatirkan lereng tersebut akan menimbulkan longsor. Selain itu, kondisi lereng dapat membahayakan pekerja dan menghambat produksi. Batu pasir dengan bobot isi asli 23,23 KN/m3, Bobot isi kering 21,14 KN/m3, dan bobot isi jenuh 25,28 KN/m3 diidentifikasi berdasarkan data yang dikumpulkan dari pengujian sifat fisik dan mekanik. Pada lokasi penelitian di ujung lereng penambangan, uji rock point load index menghasilkan kuat tekan uniaksial sebesar 43,13 MPa dan kuat indeks sebesar 1,875 MPa. Analisis faktor keamanan FK) dan rekomendasi geometri lereng sebenarnya dibuat menggunakan metode Janbu Simplified, dan diperoleh FK sebesar 1,185 pada ketinggian 30 meter dan kemiringan 78. Hasil uji geser langsung tegangan puncak menghasilkan kohesi (c) sebesar 116,5 KPa dan sudut geser dalam 41,9872. Hasil tegangan sisa menghasilkan kohesi (c) 58,1 KPa dan sudut geser dalam 48,9934 Dengan tinggi 30 meter dan kemiringan 73 derajat, metode janbu sederhana menghasilkan geometri lereng yang direkomendasikan dengan FK 1,375
ANALISIS PRODUKSI ALAT GALI MUAT DAN ALAT ANGKUT DENGAN MENGGUNAKAN METODE MATCH FACTOR DAN TEORI ANTRIAN UNTUK MEMENUHI TARGET PRODUKSI BATUBARA 48.000 TON/BULAN DI GUNUNG SELAN PT PUTRA MAGA NANDITAMA BENGKULU UTARA Muhammad Daffa Muzaffar; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): 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.v8i1.122004

Abstract

Abstract. PT Putra Maga Nanditama is a coal mining company located in Gunung Selan, Bengkulu. This company uses the open pit mining method. The failure to achieve the production target of 48,000 tons/month was caused by several problems, namely the problem of tool waiting time, equipment damage, productivity of loading and unloading equipment and unstable transportation equipment.The misalignment between the loading and digging equipment and the hauling equipment results in waiting time for the equipment. Based on research conducted in August 2022, the productivity of 1 unit of Doosan DX300 Excavator was 154.79 tons/hour and 5 units of DT Hino Ranger 500 reached 111.8 tons/hour. From the results of the production analysis using the match factor method after the repair, the value of MF = 0.85 is obtained and the queuing theory after the repair is obtained by the EU on the Doosan DX300 Excavator which is 74% and the EU on the DT Hino Ranger 500 which is 75%. Then the productivity obtained after repairs from mechanical devices that work is 77,490.54 tons/month which shows that the production target at PT Putra Maga Nanditama has been achieved at 48,000 tons/month.
Rancangan Teknis Dan Analisis Biaya Reklamasi Pada Area In Pit Dump X Site Pulau Pakal PT. Aneka Tambang Tbk. UBPN Maluku Utara Hafizurahman Dwi Saputra; Rusli HAR; Mulya Gusman; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): 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.v8i1.122149

Abstract

PT. Antam Tbk. UBPN Maluku Utara has converted a former mining land into an in-pit dump for the disposal of low-grade cover soil and materials. If the area is already covered by cover soil, the area must be immediately reclaimed. Special treatment and attention are required in handling waste materials in the X in-pit dump area, as the waste material belongs to PAF material which has the potential to cause acid rock drainage problems. Based on the calculation, the bench width is 3.5 m, the single slope slope is 350, the height is 8 m and the backslope is 5%. Based on measurements, the area of stage 1 is 19,537.182 m2, stage 2 is 21,537.501 m2 and stage 3 is 13,086.461 m2. From the calculation of material 1volume, different results were obtained between the existing landfill plan, with the estimated regrading completion time ranging from 37 to 151 days, and for 19 days for revegetation in stage 1, stage 2 for 24 days and stage 3 for 13 days. For the check dump, the total volume is 10,565.62 m3 with a completion time of 14 days. The total reclamation cost ranges from Rp 451,223,407 to the largest Rp 35,365,018,549.
Evaluasi Penerapan Sistem Manajemen Keselamatan Pertambangan (SMKP) di IUP 206 Ha Batu Gamping, PT Semen Padang, Sumatra Barat Risma Erwi Gusvita; Fadhilah Fadhilah; Heri Prabowo; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 2 (2023): 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.v8i2.125128

Abstract

At the mining company PT Semen Padang there are still several cases of work accidents and a decrease in the achievement level of SMKP audits in 2022, especially in the 206 Ha Limestone IUP by 69%. This study aims to analyze work accident statistics for 2021-2022 and evaluate the implementation of SMKP in IUP 206 Ha Batu Gamping, PT Semen Padang in 2023. This research is an evaluation design study with a quantitative descriptive approach. Data collection techniques started from literature studies, questionnaires, review of documents & records, observations and interviews. The results showed that there was an increase in the frequency of accidents (FR) and the severity of accidents (SR). In 2021 the FR and SR values are 0 while in 2022 the FR values are 0.51 and the SR values are 3.60. The results of the questionnaire analysis related to the implementation of SMKP in IUP 206 Ha in 2023 show an increase with a compliance percentage value of 81% using a Likert scale calculation. The elements that must be improved are Element IV Implementation, Element VI Documentation and Element VII Management review & performance improvement.
Pengaruh Total Resistance Terhadap Produktivitas Dump Truck Komatsu HD 785-7 di Area IUP 329 Ha PT. Semen Padang Ade Fikri; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 2 (2023): 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.v8i2.125169

Abstract

PT. Semen Padang is a company that focuses on the cement industry with locations in Indarung, West Sumatra. One of the natural resources needed is limestone as a raw material for making cement. This study conducted a comparative analysis of productivity with fuel consumption used against working hours. The analysis carried out is to look at the effect of productivity on dump truck fuel. The transportation equipment used in this study is the Dump Truck Komatsu HD-785 with the hauling distance from PNBP 6 to Crusher VI of 1.23 km with an average road slope of 11.2% and along with such productivity targets will certainly affect material consumption. fuel, so that with a longer travel time will result in greater fuel use. This research was conducted on the productivity process with the aim of optimizing the productivity of the transportation equipment, obtaining a lower fuel ratio value, and using fuel for the Komatsu HD-785-7 transportation equipment to achieve productivity targets.
Perencanaan Geometri Jalan Hauling Batubara Dari ROM Pit Menuju ROM Port di PT. MNC Infratama Jobsite PT. Bhumi Sriwijaya Perdana Coal Provinsi Sumatera Selatan Alfajriah Alfajriah; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 2 (2023): 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.v8i2.125139

Abstract

Every mining operation requires haul roads as a very important infrastructure facility. The purpose of this research is to plan a haul road and calculate the required road geometry design so that the Hino FM 260 JD dump truck can pass through it. Data collection methods used in this research are literature studies, observation, primary data and secondary data. The location to be studied has a road length of ± 11,2 km. The results of this study with planning a straight road width of 9 m while at a bend of 15 m, the minimum bend radius is 47 m with a turning radius of 8,5 m, the maximum superelevation obtained is 0.04, and a cross slope is obtained with a difference 18 cm high. The planned slope of the road is the maximum slope that can be passed properly by the conveyance. The slope would ideally be 8%. Based on the bend plan, there are 10 bend radii consisting of 5 SCS bends, 1 FC bend and 4 SS bends. In order to support the smoothness and safety of transportation activities, especially on hauling roads, it is necessary to take into account the road supporting factors to achieve these conditions, namely stopping distances and safety berms. On each left and right side of the road a safety embankment will be made with a width of 1.44 m with a height of 0.48 m and a safe/stopping distance for vehicles that is 41.463 m. The load received by the road surface is 16.000 lb/ft2. Therefore, a hauling road pavement is required with the addition of a cover layer with a material carrying capacity of 20.000 lb/ft2 Compact gravel and boulder-gravel formation; very compact sandy gravel.
Co-Authors Ade Elsa Marini Ade Fikri Aldi Suganda Putra Alfajriah Alfajriah Algozi, Rahmad Dedi Yulhendra Dr. Fadhila S.Pd,.M.Si Egivvano Iranda Fachri Diwanda Facrul Rozi Ramadhan Fadhilah Fadhilah Fadhilah Fadhilah Fariz Aditya Fendri Amir Ferdi Domala Pani Fuji Kurniansyah Gilang Haris Prasetyo Hafizurahman Dwi Saputra Harizona Aulia Rahman Heri Prabowo Heriyadi, Bambang Ilep Prengki Ilham Akbar Indri Dwi Wahyuni Kurniawan Kurniawan M. Ravil Akbar Elfiantra Muhammad Akmal Muhammad Daffa Muzaffar Muhammad Deri Frasetia Muhammad Fajar Hidayat Muhammad Fikra Irwan Mulya Gusman Nadilla Putri Nauli, Fitri Panji Pangestu Putra, Kyrie Eleison Raimon Kopa Riam Marlina A Ridho Gusfajri Ahad Riko Maiyudi Riri Metriani Risma Erwi Gusvita Rizky Dhanni Fajri Rizto Salia Zakri Rudy Anarta Rusli HAR Ryan Markah Sarah Shania Ulfa Andisya Syari Rahma Yanti Tiuridah Silitonga wahyuzanora wahyuzanora Waidah, Dina Fara Yordi Hanif Yoszi Mingsi Anaperta