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All Journal Journal Transformation of Mandalika Jurnal Riset Teknik Pertambangan INTAN Jurnal Penelitian Tambang Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII 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 Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Tommy Trides
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Transportation

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ANALISIS TREND MINERALISASI EMAS HIGH SULPHIDATION EPHITERMAL MENGGUNAKAN PARAMETER GEOSTATISTIK PADA PIT MAIN RIDGE PT. J RESOURCES BOLAANG MONGONDOW SULAWESI UTARA Renaldy Kyfen Kapoyos; Shalaho Dina Devy; Tommy Trides
JURNAL TEKNOLOGI MINERAL FT UNMUL Vol 7, No 2 (2019): Jurnal Teknologi Mineral FT UNMUL Desember 2019
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtm.v7i2.2957

Abstract

Analisis trend mineralisasi sangat penting dilakukan karena dapat dijadikan sebagai parameter acuan rencana penambangan short term. Tujuan dari penelitian ini untuk mengetahui trend mineralisasi beserta daerah pengaruhnya yang akan dijadikan sebagai pembobotan dalam pembuatan block model. Penelitian ini menggunakan perangkat lunak Micromine 2014. Analisis trend mineralisasi dilakukan dengan melakukan pengambilan data blast hole dan dilakukan pit mapping untuk mempelajari struktur geologi pada daerah penelitian. Hasil pengambilan data diolah menjadi data assay yang kemudian dilakukan validasi. Selanjutnya trend mineralisasi didapatkan dari hasil analisis semivariogram map. Daerah pengaruh mineralisasi dapat diketahui ketika menganalisis parameter geostatistik menggunakan semivariogram. Hasil dari penelitian ini didapatkan trend mineralisasi Pit Main Ridge dengan menggunakan analisis parameter geostatistik diketahui arah strike N-NE (North-North East) 25,63⁰ dengan jarak pengaruh 13 m, arah dip adalah S-E (South East) 43,58⁰ dengan jarak pengaruh 14 m, dan thickness adalah sub horisontal 3,16⁰ dengan jarak pengaruh 8,3 m.
Analisis Kestabilan Lereng Dengan Menggunakan Metode Rock Mass Rating (RMR) Dan Metode Slope Mass Rating (SMR) Pada Penambangan Batupasir Daerah Bukit Pinang Kecamatan Samarinda Ulu Kota Samarinda Provinsi Kalimantan Timur Marlinus Matius Lollong; Tommy Trides; Windhu Nugroho
JURNAL TEKNOLOGI MINERAL FT UNMUL Vol 7, No 1 (2019): Jurnal Teknologi Mineral FT UNMUL Juni 2019
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtm.v7i1.2435

Abstract

Kestabilan pada lereng batuan berhubungan dengan tingkat pelapukan dan struktur geologi yang ada pada massa batuan tersebut, seperti sesar, kekar, lipatan, dan bidang perlapisan. Struktur tersebut selain lipatan disebut dengan bidang lemah. Disamping struktur geologi, kehadiran air dan sifat fisik-mekanik batuan juga mempengaruhi kestabilan lereng. Analisis kestabilan lereng yang digunakan yaitu metode Rock Mass Rating (RMR) dilanjutkan dengan metode Slope Mass Rating (SMR). Metode Rock Mass Rating (RMR) menggunakan lima parameter serta sifat fisik dan sifat mekanik batuan berupa berat jenis batuan dan kuat tekan batuan. Lima parameter tersebut yaitu Kuat Tekan Batuan, Rock Quality Designation (RQD), jarak kekar, kondisi kekar, dan kondisi airtanah daerah penelitian. Slope Mass Rating (SMR) diperoleh dengan menjumlahkan faktor penyesuaian yang bergantung pada orientasi bidang diskontinuitas dan metode penggalian. Dari analisis yang dilakukan pada lereng di lokasi penelitian, didapatkan nilai parameter metode Rock Mass Rating (RMR) yaitu kuat tekan batuan = 81,37 MPa, RQD = 99,72%, jarak kekar = 1,28 meter, kodisi kekar = panjang diskontinuitas 28 - >500 cm, terbuka 0 – 10 mm, agak kasar, isian kasar (lempung), sedikit lapuk. Kondisi Airtanah daerah tersebut termasuk kedalam kondisi kering. Untuk nilai SMR yang didapatkan ada tiga dikarenakan ada tiga potensi longsoran yang terdapat pada daerah penelitian. SMR pada longsoran bidang = 50,2 (kelas SMR nomor III), SMR pada longsoran baji = 43 (kelas SMR nomor III), SMR pada longsoran guling = 49,5 (kelas SMR nomor III). Hal ini menyatakan bahwa lereng dalam keadaan tidak menentu. Perlu dilakukan perubahan pada geometri lereng agar lereng dalam keadaan stabil.
Analisis Kestabilan Longsoran Baji Pada Lereng Batupasir, Daerah Kecamatan Loa Janan Ulu, Kota Samarinda, Kalimantan Timur Muhammad Ilham; Tommy Trides; Koeshadi Sasmito; Revia Oktaviani; Sakdillah S; Henny Magdalena; Lucia Litha Respati
JURNAL TEKNOLOGI MINERAL FT UNMUL Vol 9, No 2 (2021): Jurnal Teknologi Mineral FT UNMUL Desember 2021
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtm.v9i2.6962

Abstract

Pengaruh bidang kekar sangat mempengaruhi kestabilan pada suatu lereng batuan. Keberadaan bidang-bidang kekar tersebut dapat menjadi bidang gelincir pada suatu jenis longsoran sehingga lereng batuan dapat mengalami pergerakan. Pada penelitian ini analisis longsoran baji dilakukan pada lereng batupasir dengan tinggi 20,57 meter dengan sudut kemiringan lereng 66˚ dan terdapat 33 bidang kekar yang saling memotong.Metode yang digunakan pada penelitian ini yakni dengan melakukan pengukuran dilapangan dengan menggunakan metode scanline untuk mengukur bidang-bidang kekar pada sepanjang pita ukur. Analisis stereografis dilakukan pada penelitian ini untuk menentukan jumlah set orientasi bidang kekar dan analisis faktor keamanan dilakukan dengan menggunakan metode analitik.Hasil analisis yang dilakukan pada lokasi penelitian terdapat 33 bidang kekar dengan jumlah 3 set kekar. Analisis kinematika dengan metode stereografis menunjukkan bahwa potensi longsoran yang dapat terjadi adalah longsoran baji. Analisis kestabilan pada lereng batupasir menunjukkan bawah faktor keamanan longsoran baji sebesar 15,79 dalam hal ini lereng batupasir dapat dinyatakan dalam keadaan stabil.
Fragmentasi Peledakan Batuan dengan Metode Image Analysis dan Perhitungan Teoritis Pada Pit Tempudo 6 PT. Indexim Coalindo Kabupaten Kutai Timur, Provinsi Kalimantan Timur Rafael Bonardy Gultom; Tommy Trides; Albertus Juvensius Pontus; Oktaviani, Revia; Harjuni
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The research was conducted at PT. Indexim Coalindo is a coal mining company operating in East Kalimantan. The mining method used is an open pit with the main activity of spreading the overburden being blasting. Fragmentation is an important factor in blasting for this company the fragmentation size does not exceed 86 cm or ≤ 20% based on the bucket width of the loading digging tool, namely the Komatsu PC 2600. The method used to analyze the fragmentation resulting from blasting is actual Image Analysis, and theoretically uses the Kuz-Ram method. This is intended to determine and compare the percentage distribution of fragmentation sizes resulting from blasting. Results from fragmentation analysis of PT. Indexim Coalindo in the field carried out in July 2023 and August 2023. In this case, it shows that the image analysis method results in a smaller fragmentation size than the Kuzram method and is in line with the target that the company standards want to produce.
Analisis Penggunaan Campuran Material Batupasir dengan Batulempung untuk Material Perkerasan Jalan Tambang di PT Belengkong Mineral Resources Site Insani Baraperkasa Kabupaten Kutai Kartanegara, Kalimantan Timur Muhammad Rayhan Fhadillah; Agus Winarno; Oktaviani, Revia; Tommy Trides; Windhu Nugroho
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

In this planning, it is assumed that the CBR value of the subgrade used is the result of taking the CBR value of the field. From the results of the field CBR values obtained 7.158%. Based on Hasi plotting obtained a thick figure of 18.6 inches. That is, that the total thickness must be at least 18.6 inches above the subgrade. Road layer structure planning recommendation for 7.7 in thick subbase course using Clay R50 % sample with CBR value 29.31%, 7.3 in thick base course using Clay R40 % sample with CBR value 32.11%, and 3.1 in thick surface course using Clay R30 % sample with CBR value 36.87%.
Faktor Penyebab Kehilangan Batubara Di Pit 15 PT Multi Harapan Utama Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur Siti Asmasari; Agus Winarno; Tommy Trides; Windhu Nugroho; Shalaho Dina Devy
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The research was conducted in pit 15 of PT Multi Harapan Utama. In the process of mining activities in pit 15 in May 2023 in seam 14, 14X, 14XL, 15U, 15U1, and 15U2. There are several activities that result in coal losses, the amount of coal loss is 685 tons so the mining recovery is 98.74%. Coal loss in pit 15 occurred due to incomplete coal mining, coal re-cleaning, scattered coal not directly transported to the stockpile, waterlogged loading points, coal weighing, and distance of coal survey data collection.
Perilaku Tanah Longsoran di Jalan Sultan Sulaiman Kecamatan Sambutan, Samarinda Kalimantan Timur Oktaviani, Revia; Benny Christian BB; Windhu Nugroho; Tommy Trides; Albertus J Pontus
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Clayey silt is one of the soils that cause many problems in infrastructure. The nature of clay depends on the dominance of the minerals it contains, this can give different behavior between clayey silt in one place and clayey silt in another place. This study aims to determine the behavior of clayey silt material in landslides on Sultan Sulaiman Road, Sambutan sub-district of Samarinda and find relationships between its physical properties including plasticity index relationship with water content and swelling. USCS classification results are included in the silt (ML) group. From the test results of moisture content ranged from 26.3% - 36.3%, Atterberg boundary tested resulted in a soil plasticity index of 28.7%, 17.3%, 14.7%, 14.7%, 13.8%, 2.6% and has an average of 15.3%. The average development percentage obtained is 1.7%, so the expansive degree of development potential is still in the low category, while the resulted of the landslide development pressure test are 135 kPa, 130 kPa, 66 kPa, 64 kPa, 39 kPa, 35 kPa with an average result of 78.2 kPa, also included in the low development potential group.
Pengaruh Muatan Bahan Peledak Dan Delay Peledakan Terhadap Tingkat Getaran Tanah Akibat Aktivitas Peledakan Kasbillah; Agus Winarno; Lucia Litha Respati; Revia Oktaviani; Tommy Trides
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Blasting activities carried out in mining activities always produce effects that will have an impact on the surrounding area of the blasting site, from some of the blasting effects that exist one of which is soil vibration, so that at the research site in Pit Jongkang which is close to the village with a distance of approximately 300-400m it is very important to measure the level of vibration leading to the village so that the results of the vibration caused by the blasting process are obtained. Based on the results of the analysis obtained the effect of the explosive charge on the vibration of the soil that is the more the explosive charge of the resulting vibration will be greater. And with the holes that explode simultaneously, the vibration caused will be large so that the use of delay time is needed to minimize the presence of holes that explode simultaneously so that the resulting vibration does not exceed the 2 mm/s vibration limit. For recommendations on the maximum amount of explosive charge so that the vibration caused does not exceed the PPV standard, namely at a distance of 300 m, and 400 m by 36 kg, and 64 kg, perdelay. With the use of the recommended surface delay is a pair of surface delay 42 ms and 67 ms in the echelon cut circuit pattern, because it slightly efficiencies the time and the resulting PPV does not exceed 2 mm/s.
Desulfurisasi Batubara Dengan Metode Leaching Menggunakan Naoh Dan HCL Di PT. Anugerah Krida Utama, Kutai Kartanegara, Kalimantan Timur Widya Indriani; Tommy Trides; Windhu Nugroho
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 2 No. 1 (2024): 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.v2i1.163

Abstract

The utilization of coal as a fossil fuel causes several ecological problems, as for the consequences of the coal combustion process, namely pollution and emissions. Combustion of high sulfur coal produces sulfur dioxide gas (SO2). This sulfur dioxide (SO2) will become H2SO4 (sulfuric acid) which can directly or indirectly disrupt human life, such as causing acid rain, causing tightness in the respiratory tract and causing corrosion and shortening the life of factory equipment. To reduce SO2 gas, a reduction in sulfur content is carried out before combustion which is called desulfurization. This research was conducted using the leaching method with variations in leaching agent and solution concentration. Leaching agents used in this study are NaOH and HCl. The coal to be desulfurized is coal from PT Anugerah Krida Utama with an initial total sulfur content of 4,05% adb. 10 grams of coal with a size of 0,212 mm was leached with 250 ml of chemical solution using a hot plate stirrer at 80˚C and 250 rpm for 1 hour. The results showed that the optimum condition for leaching agent NaOH occurred at a concentration of 8 M showing the initial total sulfur content of 4,05% adb decreased to 1,69% adb with a maximum percentage decrease of 58,27% and at leaching agent HCl the optimum condition occurred at a concentration of 1 M showing the initial total sulfur content of 4,05% adb decreased to 2,91% adb with a maximum percentage decrease of 28,14%.
Studi Uji Kuat Tekan Uniaksial dan Uji Kuat Tarik Tidak Langsung Untuk Menentukan Brittleness Index (BI) Pada Batupasir di Formasi Pulau Balang dan Balikpapan Musmulyanas Mus; Tommy Trides; Lucia Litha Respati
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 2 No. 3 (2024): Juli: Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipi
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v2i3.419

Abstract

In the process of designing mine slopes, drilling or tunneling, to determine the level of strength and brittleness factors of rock on a slope, it is necessary to carry out a uniaxial compressive strength test or indirect tensile strength test of the rock. Compressive strength testing is carried out to determine how long the rock maintains its strength or elastic properties when pressure is applied. This data can be used as information to understand the analysis of factors that influence the physical properties of rocks on the compressive strength of rocks from physical properties and compressive strength testing activities. and indirect tensile strength testing is carried out to determine the stress value contained in the rock. To determine the level of rock brittleness, it can be done by comparing the uniaxial compressive strength value and the indirect tensile strength value. This data can be used as information and reference for companies that will design a mine slope, drill and tunnel, how strong the strength and level of brittleness of rocks in areas dominated by sandstone. This research uses quantitative methods, so that to obtain accurate calculation data, testing methods are used in the form of uniaxial compressive strength tests and indirect tensile strength tests, in this case tested on sandstone samples obtained from 2 rock formations including the Pulaubalang formation and the Balikpapan formation, so that accuracy The test result values ​​can be obtained well. And after testing, a comparison is made between the uniaxial compressive strength test value and the indirect tensile strength test to obtain the Brittleness Index value.Based on the observation results, it can be concluded that when the brittleness of the rock becomes greater, the performance of the cutting digger increases several times.
Co-Authors Agus Winarno Al Mulyadi Albert Juvensius Pontus Albertus J Pontus Albertus Juvensius Albertus Juvensius Pontus Albertus Pontus Aldicho Alfiandy Suhendik Amarullah Amarullah Anandyta Suci Ramdani Andreas Marojahan Gurning Ardhan Ismail Arya Mu’min Wally Bayu Indra Dermawan Benny Christian BB Berliani Wahyu Ningrum Bunga Bunga Desi Permatasari Djuwita Dela Safitri Eghi Eghi Eka Ely Febrianty Evon Seplika Kadang Fadli Fadli Farah Dinna Febryantho Pasiakan Fery Ferdiansyah Gideon Samari Suno Harjuni Harjuni Hasan Henny Magdalena Ibnu Syafi’i Rhamadany Juan, Juan Kasbillah Koeshadi Sasmito Lucia Litha Lucia Litha Respati Marlinus Matius Lollong Melki Marten Muhammad Aji Satria Mandiri Muhammad Ashar Alias Suara Muhammad Hafidz Muhammad Hamzah Muhammad Iksan Hamsyah MUHAMMAD ILHAM Muhammad Rahul Shidiq Muhammad Rayhan Fhadillah Musmulyanas Mus Mustafa Wadi Nirwana Putri Nurfitri Kasran Nurhidayatullah Am Ondo Immanuel Samosir Orfinada Sultan Danilof Rafael Bonardy Gultom Renaldy Kyfen Kapoyos Rety Winonazada Revia Oktaviani Revia Oktaviani Roberto Firson Pappang Ruslan Patur Sakdillah S Sakdillah Sakdillah Setiawan Tandi Shalaho Dina Devi Shalaho Dina Devy Siti Asmasari Sri Wahyuni Tommy Aria Pradana Widya Indriani windhu Nugroho Yoga Achmad Rynaldy Yuana Saputra