Article Per Year (5 Year)
p-Index From 2021 - 2026
8.926
P-Index
This Author published in this journals
All Journal Indonesian Mining Journal JOURNAL SCIENTIFIC OF MANDALIKA (JSM) Dewantara Journal of Technology International Journal of Engineering, Science and Information Technology Jurnal Sosial dan Teknologi Jurnal Abdi Masyarakat Indonesia Action Research Literate (ARL) Educational Building: Jurnal Pendidikan Teknik Bangunan dan Sipil Journal Transformation of Mandalika Journal of Comprehensive Science MINERAL Nusantara Civil Engineering Journal INTAN Jurnal Penelitian Tambang Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Inovasi Global Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan JURNAL TEKNOLOGI MINERAL FT UNMUL Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Venus: Jurnal Publikasi Rumpun Ilmu Teknik Jurnal Kendali Teknik dan Sains
Albertus Juvensius Pontus
Universitas Mulawarman
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

Published : 65 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 65 Documents
Search

 1   2   3   4   5 
Analisis Pengaruh Kenaikan Temperatur Batubara Sebagai Indikator Awal Terjadinya Swabakar (Spontaneous Combustion) Di Product Coal Stockpile Pada Pt. Mahakam Sumber Jaya Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur Yolanda, Agnes; Nugroho, Windhu; Pontus, Albertus Juvensius; Winarno, Agus; Trides, Tommy
JURNAL TEKNOLOGI MINERAL FT UNMUL Vol 12, No 2 (2024): Jurnal Teknologi Mineral FT UNMUL Desember 2024
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtm.v12i2.17815

Abstract

Swabakar atau self-combustion pada batubara terjadi karena beberapa faktor, salah satunya adalah pada saat penyimpanan batubara di area stockpile, batubara akan kontak dengan udara maka akan terjadi oksidasi antara kandungan ini dengan oksigen, semakin lama batubara tertimbun akan semakin banyak panas yang tersimpan di dalam timbunan, karena volume udara yang terkandung di dalam timbunan semakin besar sehingga kecepatan oksidasi semakin tinggi. Oleh karena itu, penelitian ini dilakukan untuk menganalisis pengaruh kenaikan temperatur batubara terhadap potensi terjadinya swabakar karena apabila suhu batubara terus meningkat yang disebabkan oleh self-heating akan mengakibatkan pembakaran spontan batubara yang sangat tidak diinginkan karena pastinya akan merugikan. Pengamatan dilakukan sebanyak 11 hari untuk mengetahui pengaruh dimensi timbunan terhadap kenaikan suhu batubara di product coal stockpile dan untuk mengetahui pengaruh lama penimbunan batubara terhadap kenaikan temperatur suhu batubara dengan menggunakan gabungan antara teori dengan data-data yang akan diambil di lapangan.. Hasil penelitian dapat disimpulkan bahwa titik yang mengalami swabakar yaitu di ketinggian 4,5 meter di arah selatan dengan kelipatan kenaikan temperatur yang cukup signifikan, serta disebabkan oleh arah angin dominan dari sebelah selatan-utara, umur timbunan sebelum dilakukan pengukuran suhu lebih dari 1 bulan. Sehingga pada saat dilakukan pengukuran, suhu batubara cepat meningkat dikarenakan batubara sudah lama terkontaminasi dengan udara dan panas sehingga mencapai titik terbakar batubara mencapai 542°C.
Pengaruh Total Resistance Terhadap Produksi Dump Truck Lgmg CMT96 Pada Pengangkutan Overburden PT Ansaf Inti Resources Kabupaten Kutai Kertanegara Provinsi Kalimantan Timur Arsuwendi Arsuwendi; Harjuni Hasan; Albertus Juvensius Pontus
Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Vol. 3 No. 1 (2025): Manufaktur : Publikasi Sub Rumpun Ilmu Keteknikan Industri
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/manufaktur.v3i1.773

Abstract

PT Ansaf Inti Resources is a company engaged in coal mining using the open pit method. In the process of mining in open pit mines, haul roads are indispensable in the process of transporting overburden and play an important role in the mining production cycle. The purpose of the study is to determine the total resistance to overburden production of the LGMG CMT96 conveyance based on the haul road segment that has been determined from the overburden loading point to the disposal of the material, then a calculation is made based on the standard number of good total resistance to the actual haul road. After calculating all segments of the haul road, the results of plotting the total obstacle graph against the speed, travel time, and production of the haul. So every 1% increase in total resistance will reduce the speed of the conveyance 1.346 km / h, while every 1% increase in total resistance will reduce the travel time of the conveyance 0.0464 minutes. The production results of the CMT96 conveyance before the improvement of the total obstacle to the road surface amounted to 55 lcm and 49 lcm, while after the improvement of the total obstacle to the road surface there was an increase in the production of the conveyance of 68 lcm and 62 lcm. So every 1% increase in total resistance will reduce the production of conveyance by 4.7429 lcm.
PERHITUNGAN KONSUMSI BAHAN BAKAR PADA HD 465 -7R MENGGUNAKAN METODE RPM MESIN DAN PENDEKATAN PER SEGMENT PADA PERUSAHAAN PERTAMBANGAN DI KALIMANTAN TIMUR Pranajiwa; Shalaho Dina Devy; Albertus Juvensius Pontus; Windhu Nugroho; Harjuni Hasan
Indonesian Mining Journal Vol 27 No 2 (2024): Indonesian Mining Journal, October 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol27.No2.2024.1578

Abstract

Fuel is usually used by engines to move or do work. In this article, the machine is a mining industry vehicle with the code HD 465 – 7R type from the Komatsu company. The vehicle is used to move overburden material from the loading area to the disposal area. Fuel consumption is usually influenced by several factors, the most influential of which are the slope of the road, the type of material used for the road, and the distance from the loading place to the dumping place. There are several methods are used to calculate fuel consumption, the most familiar of which is the vehicle working hours (hour meter) method. In this research, the calculation of fuel consumption uses engine RPM with a segment approach method taken with a segment distance of between 100 - 200 meters. The results of calculating fuel usage on the HD 465 – 7R have a figure of 51.7 liters/hour, with the actual value being 51.9 liters/hour. The conclusion of this research is that by using the engine RPM method, the results of fuel usage calculations are also close to the actual values. Testing by RPM with an hour meter is very different, where testing by RPM is based on the length of duration at that RPM number; the higher the RPM and the longer the duration of time, the greater the fuel released. This is continuous with the road segment, where an uphill road segment will definitely increase travel time due to a decrease in speed, and the RPM will increase.
Pengaruh Parameter Geoteknik Hasil Pengeboran terhadap Desain Tambang di PT. Insani Baraperkasa, Kutai Kartanegara Rahmat Rahman; Albertus Juvensius Pontus; Agus Winarno
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 3 No. 2 (2025): Mei : Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v3i2.788

Abstract

Mining with an open pit system is carried out by excavating and removing the overburden to obtain coal. However, before mining, it is important to obtain geotechnical data information. As well as the lithology of the rocks below the surface, it is necessary to carry out geotechnical drilling (full coring). This study can determine the value of slope geometry safety factors and plan safe slope geometry, both individual slopes and overall slopes. Therefore, this was done to determine the influence of GSI geotechnical parameters on the value of static and dynamic slope safety factors. The method used in determining the safety factor and the probability of an avalanche is the Morgenstern-Price boundary equilibrium method with the Generalized Hoek-Brown collapse criterion in static and dynamic slope conditions. The input parameters used in the analysis were natural density, compressive strength value (UCS), geological srength index (GSI), disturbance factor (D), intact rock constant (mi), as well as seismic load factor, and groundwater level. The optimal geometry on the Highwall slope is the configuration of the Highwall slope with a height of 74 m and an angle of 23°, supported by a single slope of 5-10 meters, a berm of 7 meters with an angle of 40°. Seam D Claystone lithology with GSI 50, Siltstone with GSI 70, Sandstone with GSI 70, and Seam E Claystone lithology with GSI 50, Siltstone with GSI 40, Sandstone with GSI 75.Can be applied within a safe limit where FK Static 1.7 PK Static 0% and FK Dynamic 1.4 PK Dynamic 6%.
Analisis Kestabilan Lereng dengan Metode Finite Element Dan Monitoring Real Time Lereng Low Wall pada Pit X Pt. Indomico Mandiri, Kabupaten Kutai Timur, Provinsi Kalimantan Timur Nur, Al Maida; Pontus, Albertus Juvensius; Respati, Lucia Litha; Oktaviani, Revia; Trides, Tommy
Action Research Literate Vol. 9 No. 6 (2025): Action Research Literate
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/arl.v9i6.2977

Abstract

Penelitian ini bertujuan untuk menganalisis kestabilan lereng low wall di Pit X yang dioperasikan oleh PT Indomico Mandiri di Kabupaten Kutai Timur, Kalimantan Timur. Metode yang digunakan meliputi pemodelan numerik dengan Metode Elemen Hingga (FEM) dan pemantauan lereng secara real-time menggunakan Slope Stability Radar (SSR). Data sifat mekanik batuan diperoleh dari pengujian laboratorium dan observasi lapangan, sementara nilai Geological Strength Index (GSI) ditentukan menggunakan grafik Hoek-Marinos. Pemodelan dilakukan pada enam penampang lereng dengan kondisi kering dan jenuh. Hasil analisis menunjukkan bahwa seluruh nilai faktor keamanan (FK) melebihi ambang batas stabilitas (FK > 1,2), dengan nilai tertinggi 1,35. Displacement hasil pemodelan numerik terkonsentrasi di dasar lereng, dengan nilai maksimum 515 mm pada kondisi kering. Pemantauan real-time menggunakan SSR dari 23 November hingga 23 Desember mencatat pergerakan terbesar sebesar 2000 mm di Area A.1S, yang disebabkan oleh limpasan air permukaan dan aliran dari luar lereng. Perbandingan antara hasil FEM dan data SSR menunjukkan perbedaan signifikan dalam nilai displacement, yang kemungkinan disebabkan oleh asumsi ideal dalam pemodelan. Meskipun demikian, pola pergerakan yang dihasilkan kedua metode menunjukkan kesesuaian, sehingga FEM tetap dapat digunakan untuk prediksi awal ketidakstabilan lereng dan mendukung pengambilan keputusan teknis dalam pertambangan terbuka.
Analisis Perbandingan Optimasi Pit 24 dengan Metode Lerch Grossman 2D terhadap Estimasi dari Software Minescape di PT Indominco Mandiri (IMM), Kabupaten Kutai Timur, Provinsi Kalimantan Timur Jhony Maxi Harjadi; Shalaho Dina Devy; Albertus Juvensius Pontus; Windhu Nugroho; Ardhan Ismail
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 3 No. 3 (2025): Agustus : Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v3i3.947

Abstract

An open pit exploitation activity will become less effective and cause production to not run well, resulting in the failure to meet production targets at PT. Indominco Mandiri. Therefore, to achieve production targets and obtain more optimal results, we need to plan the Design Pit Limit. The purpose of this research is to optimize the pit, find the BESR value, and compare the differences between two methods. The Lerch Grossman 2D algorithm method is believed to be able to determine the optimal pit boundary quite quickly, while the Minescape with its triangle method can calculate some unreadable sides quite accurately. The Lerch Grossman method with its economic blocks indicates that an elevation of 72 mdpl is the outer boundary of the pit that has the potential to generate a profit of $20,194,836.59, with the best consideration being a Stripping Ratio of 1:21.08. With that lower limit, an optimal pit design was created using minescape software, resulting in a coal reserve value of 1,581,870.42 tons with a profit of $14,590,646.75, which is larger and with a smaller SR of 1:19.06.
Studi Hubungan Nilai Uniaxial Compressive Strength dan Nilai Schmidt Hammer Batulempung pada Formasi Balikpapan dan Kampungbaru Daerah Kutai Kartanegara, Provinsi Kalimantan Timur Amarullah Amarullah; Albertus Juvensius Pontus; Shalaho Dina Devy; Revia Oktaviani; Tommy Trides; Rety Winonazada
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 3 No. 3 (2025): Agustus : Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v3i3.955

Abstract

Compressive strength is one of the mechanical properties of rock behavior. This study focuses on the Balikpapan and Kampungbaru Formations located in the Kutai Kartanegara area, East Kalimantan. The Schmidt Hammer testing method was applied due to the lack of previous studies utilizing this tool to evaluate rock hardness in correlation with compressive strength. The research site is situated in the Kutai Kartanegara area, specifically in the districts of Muara Badak, Muara Jawa, and Sanga-Sanga. Field observations revealed the presence of claystone slopes at predetermined locations. Based on the test results, the uniaxial compressive strength (UCS) values for the Balikpapan Formation range from 3.453 MPa to 5.454 MPa, while the Kampungbaru Formation ranges from 3.317 MPa to 8.571 MPa. The Schmidt Hammer rebound number (RN) values for the Balikpapan Formation range from 17 to 19.6, and for the Kampungbaru Formation from 15 to 23.7. A negative correlation was found between the rebound number and UCS, where higher RN values tend to correspond with lower UCS values. This is supported by the linear regression analysis showing a negative coefficient (-0.450).
Pengaruh Kadar Air terhadap Nilai Kuat Geser Batulempung pada Cekungan Kutai Menggunakan Metode Direct Shear di Provinsi Kalimantan Timur Muhammad Rahul Shidiq; Tommy Trides; Albertus Juvensius Pontus; Revia Oktaviani; Ardhan Ismail; Rety Winonazada
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 3 No. 3 (2025): Agustus : Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v3i3.956

Abstract

In the Kutai Basin area, seasonal changes such as high rainfall can significantly increase groundwater content, so that the effect of water content on the shear strength of claystone, increasing water content in rocks tends to decrease shear strength. Water in the pores or fractures can increase pore water pressure and reduce effective normal stress. Shear strength is one of the most important mechanical parameters used to assess soil and rock stability, this parameter is very important in slope stability analysis, foundation planning, and various civil engineering and mining applications. Therefore, this study was conducted to determine whether the water content in rocks can affect the strength of rocks in receiving shear forces. The method used in this study is more quantitative and specific to the effect of water content on the shear strength of claystone in this area. Increasing water content in rocks tends to reduce shear strength. This study was conducted by taking claystone samples from several locations in the Kutai Basin. Data collection in the form of primary data and secondary data for testing physical properties and testing mechanical properties, in testing physical properties, the water content value will be taken as supporting data which is one of the factors that affect rock strength, in testing mechanical properties, claystone shear strength data will be taken. From the results of the physical properties test calculations, the air content in each Formation is obtained, namely, in the Kampungbaru Formation the minimum air content value is 15.54% and the maximum is 20.17%, in the Balikpapan Formation the minimum air content value is 10.21% and the maximum is 12,88%, in the Palaubalang Formation the minimum air content value is 10.49% and the maximum is 22.87%. The results of the strength of the claystone in receiving shear forces in the Kutai Basin are the Muara Jawa location 0.486MPa, Tanah Datar location 0.500 MPa, Sanga-sanga location 0.333 MPa, Muara Badak location 0.269, Air Putih location 0.711MPa, Mugirejo location 0.021 MPa and Lempake location 0.092 MPa.
Analisis Konsumsi Bahan Bakar Alat Gali Muat-Angkut pada Kegiatan Pengupasan Overburden PIT Seloklai: PT. Mitra Indah Lestari Kota Samarinda Roland Fatar Fernados Sirait; Albertus Juvensius Pontus; Agus Winarno; Harjuni Hasan; Henny Magdalena; Revia Oktaviani
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 3 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i3.844

Abstract

Fuel consumption is a necessity in moving mechanical equipment, where fuel consumption is influenced by road conditions, horsepower, and load factors. PT. Mitra Indah Lestari uses Hyundai 480 and Sany750-H excavators. The transport equipment used is Wechai WT90, Tonly TLD90, and Quester CWE 330. This study uses a quantitative method and obtains fuel consumption results, where the fuel consumption of the Hyundai 480 and Sany 750-H excavators is 37.89 liters/hour and 59.91 liters/hour, respectively. The fuel consumption of the Wechai WT90, Tonly TLD90, and Quester CWE 330 transport equipment is 25.19 liters/hour; 27.53 liters/hour; and 10.66 liters/hour, respectively.
Analisis Biaya Fuel Consumption Alat Angkut Dump Truck dalam Aktivitas Pengangkutan Overburden PIT A9 PT. Mitra Abadi Mahakam Jobsite PT. Bukit Baiduri Energi Fajar Ramadhan; Harjuni Hasan; Albertus Juvensius Pontus; Henny Magdalena; Ardhan Ismail
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 3 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i3.934

Abstract

Mitra Abadi Mahakam as a contractor operating at PT. Bukit Baiduri Energi's jobsite, especially in the Pit A9 area, faces operational challenges related to variations in haul road grades. Differences in road gradients on the overburden hauling route have the potential to cause significant differences in fuel consumption between dump truck units, which ultimately affects the overall efficiency of hauling activities. The study was conducted quantitatively with primary and secondary data requirements and through 3 stages. The study resulted in an average fuel consumption value in loaded conditions of 1.41 liters and in unloaded conditions of 0.18 liters. The average fuel ratio value in loaded conditions was 0.62 liters/second and in unloaded conditions of 0.32 liters/second. The cost of fuel consumption in loaded conditions was Rp. 4,972,800 ($301.92) and in unloaded conditions of Rp. 2,607,360 ($158.30)
Co-Authors A. Agus Mantri Abdul Malik Afdal Jamil Tanjung Agus Winarno Agus Winarno Agus Winarno, Agus Ahmad Akmal Muhyiddin Aisyatur Ridho Akbar Ilham Akbar Nazaruddin Amarullah Amarullah Anakta Hartanta sebayang Anandyta Suci Ramdani Apriadi Saputra Ardhan Ismail Ardian Saputra Arie Prasetya Arie Arsuwendi Arsuwendi Dian Isnandar Dina Devy, Shalaho Djuwita Dela Safitri Eghi Eghi Elsa Amanda Putri Enggar Salsabilla Pramesty Ery Budiman Fajar Ramadhan Firman Firman Firman Firman Gunawan Manullang, Ronal Edi Harjuni Harjuni Hasan Harjuni Hasan Haviluddin Haviluddin Henny Magdalena Indaswati Indaswati Indra Ariani, Indra Irianta Ibo Sembiring Irvantoni Simbolon, Desron Jaba, Yafet Jawil, Anshar Abdullah Jhony Maxi Harjadi Koeshadi Sasmito L. Tobing, Ciko Gratio Parkletos Litha Respati, Lucia Lucia Litha Respati Lucia Litha Respati Masayu Widiastuti Melki Marten Mochamad Gaharu Dida Devedo Moh. Widzar Fahmi Widzar Muh. Iskandar Rahman Muhammad Rahul Shidiq Muhammad Rofy Fauzan Musodiq Musodiq Natasya Amanda Putri Nugroh, Windhu Nugroho, Windhu Nur Aqsa Syahban Irwan Nur, Al Maida Pranajiwa Putri Pebrian Putri, Agita Kendari Rafael Bonardy Gultom Rahmat Rahman Respati, Lucia Litha Rety Winonazada Rety Winonazada Revia Okatviani Revia Oktaviani Revia Oktaviani Revia Revia Oktaviani Rexy Maulana Riskianto, Achmad Riyan Pradika, Muhamad Roberto Firson Pappang Roland Fatar Fernados Sirait Ronald Alvin Ifnie, Jones Sakdillah Sakdillah Sakdillah Sakdillah Satria Bekti, Nanda Shalaho Dina Devi Shalaho Dina Devy Shalaho Dina Devy Shalizam, Shalizam Sitepu, Joe Vandame Sokisha, Sokkia Suhari, Josh Immanuel Stevano Thomas , Anita oktoviana L.P.G.M. Tommy Aria Pradana Tommy Trides Tommy Trides Tommy Trides Tommy Trides Trides, Tommy Vandrianus Felix Feto Nuwa Wahyu Garini, Andini Dwi Weggie Atanasius Tonapa William William William William windhu Nugroho Windhu Nugroho windhu Wiradhana, Ni Made Ayu Dwi Kartika Yolanda, Agnes Yuana Saputra