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All Journal Jurnal Sains dan Pendidikan Fisika Media Komunikasi Geografi Seminar Nasional Teknik Kimia Kejuangan Journal of Engineering and Technological Sciences Jurnal Teknologi Pertambangan Techno LPPM JOURNAL ONLINE OF PHYSICS Jurnal Teknologi Mineral dan Batubara Jurnal Geomine RACIC : Rab Construction Research Indonesian Mining Journal Justek : Jurnal Sains Dan Teknologi Jurnal Mineral, Energi dan Lingkungan Prosiding Seminar Nasional Sains dan Teknologi Terapan Jurnal GEOSAPTA Jurnal Basicedu Jurnal Tekno Insentif Media Ilmiah Teknik Lingkungan Jurnal Teknik ComTech: Computer, Mathematics and Engineering Applications KURVATEK INDONESIAN MINING PROFESSIONALS JOURNAL Jurnal Himasapta Jurnal Mineral, Energi dan Lingkungan Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN Journal of Earth and Marine Technology (JEMT) Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Jurnal Sosial dan Teknologi Jurnal Inovasi Pertambangan dan Lingkungan Jurnal Basicedu INTAN Jurnal Penelitian Tambang Indonesian Mining and Energy Journal Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Prosiding Seminar Nasional Teknik Lingkungan Kebumian SATUBUMI Jurnal Anestesi: Jurnal Ilmu Kesehatan dan Kedokteran Jurnal Teknologi Mineral dan Batubara Indonesian Mining Journal
Cahyadi, Tedy Agung
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Aerospace Engineering Humanities 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 Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation

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Journal : indonesian mining journal

 1 
DELAY EFFECT OF MUD LOADING TO THE OPEN PIT DESIGN IN TERMS OF MEETING 2018 – A COAL PRODUCTION TARGET CASE STUDY OF PIT XYZ AT SOUTH KALIMANTAN Karel Lutan Warda; Bagus Wiyono; Tedy Agung Cahyadi; Sigit Bagus Prabowo
Indonesian Mining Journal Vol 23 No 2 (2020): INDONESIAN MINING JOURNAL, Vol. 23 No. 2, October 2020
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol23.No2.2020.994

Abstract

Based on the 2018, there a mining plan, two temporary sumps, namely the ABC and BCD sumps. They located in a mining sequence pattern. These sumps required a  mud loading process prior to mining the coal below the sequence. The mud loading process is loaded sequentialy. However, the problem occurs when the mud loading process in the ABC sump is delayed, and resulted only 42% of mud production. Such the delay resulted in hindering the mining sequence pattern which forced changes in plans, designs, and decrease of coal production. These condition led to study the cause, impact, and alternative solution of the delay during mud loading process. The method used in this study includes direct observations and data collection of working conditions, equipment capabilities, material properties, and operation timeline. In this study, the statistical analysis is used to determine the cause and effect of delayed mud loading process. A Minex Software is then used to simulate the alternative of redesign the mining sequence pattern. The study found that the delay in mud loading process is due to the external and internal factors, that result in underproduction of coal only 505,833 tons, and delayed of coal production around 64 days. An alternative that can be conducted is to change the direction progress to the area that has low stripping ratio.  Factors that can hinder the progress are need to be considered for anticipating the plan distraction at mid-term-plan.
PERBANDINGAN HASIL ANALISIS POLA ALIRAN DENGAN PERSAMAAN RANS DAN LES DALAM COMPUTATIONAL FLUID DYNAMICS (CFD): LITERATURE RIVIEW Thiansy, Elsy; Cahyadi, Tedy Agung; Haq, Shofa Rijalul
Indonesian Mining Journal Vol 28 No 2 (2025): Indonesian Mining Journal, October 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol28.No2.2025.1664

Abstract

The settling pond functions to hold and settle suspended particles, especially Total Suspended Solid (TSS) in order to reduce the pollutant load. However, the effectiveness of settling ponds is greatly influenced by the flow characteristics and the concentration of tss carried. This research compares two numerical approaches in Computational Fluid Dynamics (CFD), namely Reynolds-Averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES). Both of these methods are widely used in turbulent flow simulations, but have different approaches and levels of accuracy in representing turbulence structures. This study reviews various recent scientific publications that apply the rans and les equations in internal and external flow cases, including settling pond applications. The review results show that the RANS equation is suitable for large-scale engineering simulations with low computational requirements but is less accurate in capturing turbulence details. The les equation provides more accurate results in capturing turbulent flow patterns than the RANS model. However, tutoring models require greater computational resources, so they need to be considered for more complex applications. From this comparison it can be concluded that the selection of equations in a CFD is very dependent on the analysis objectives, limited computing resources, and the level of data detail required.
Co-Authors A. Belo, Delia Ximenes Abdul Halim Pelu Achmad Sadikin Agung Yulianto Nugroho Agustian, Yusrian Aisyah Salma Aji Lambang Hidayah aldin ardian, aldin Alfianto, Danny Algifari, Arif Aminuyati Amrin, Dedy Andrawina Wina Angggian R., Shahensah Anand Anggoro, Hengky Ansori, Muhammad Iqbal Anton Sudiyanto Anton Sudiyanto Ardinanta, Desta Nugraha Arif Munandar Arrina Khanifa Astika Putri Roshinta Bagus Wiyono Bagus Wiyono Bambang Dwijo Pranowo Barlian Dwinagara Bimantoro, Adyaksa Bagas Butungan, Jeragustivia Dahono Haryanto Dedy Amrin Deka Citra Dinata Delia Ximenes A. Belo Divina Maria Marques Doni Firdaus Fadlil Dwi Fitri Yudiantoro Dwi Januar Ariyanto Dwi Mayanti Mega Lesmana Dwi Poetranto Waloeyo Adji Dwi Ratminah, Wawong Dwi Yolanda Sumbung Dyah Nunki Yalesrie Eddy Winarno Eddy Winarno Eddy Winarno, Eddy Edy Nursanto Edy Nursanto Edy Nursanto Edy Nursanto Edy Nursanto Eko Teguh Paripurno Eman Widijanto Erlangga, Robby Erwedi Erwedi Erwedi, Erwedi Fadlil, Doni Firdaus Faizal Agung Riyadi Fanani, Yazid Ficky Adi Kurniawan Firmansyah, Ilham Fitri Nauli Fitriani Fitriani Frans Richard Kodong Gabriel Ranteallo Gandar Mahojwala Genadi Toar Nainggolan Gunawan Nusanto Gunawan Nusanto, Gunawan Gunawan, Risal Habibah, Annisa Ummu Hadi Purwanto Halimah Tusak Diah Hana Trijayanti Haq, Shofa Rijalul Hartono Hartono Hartono Hartono Hartono Hartono Hartono Sihir Hasywir Thaib Siri Hasywir Thaib Siri Hasywir Thaib Siri hasywir thaib siri, hasywir thaib Hendriono Hengky Anggoro Herlina Jayadianti Herniti, Dwi Heru Suharyadi Ifa Aulia Chusna Ilham Firmansyah Imawati, Rika Indah Setyowati Indah Setyowati Indun Titisariwati Indun Titisariwati Indun Titisariwati Indun Titisariwati, Indun Inmarlinianto Inmarlinianto, Inmarlinianto Jeragustivia Butungan Jeremia Christopher Herbert Siregar kadek nando setiawan nando Karel Lutan Warda Ketut Gunawan Ketut Gunawan Khanifa, Arrina Kresno Kresno Kresno Kresno Kurniawan, Fitra Kusumayudha, Sari Bahagiarti Leka, Emil Salim Kahmi Lesmana, Dwi Mayanti Mega Lilik Eko Widodo Linggasari, Shenny M. Rahman Yulianto Marganiswati, Yudha Tintana Mariatul Kiptiah Marques, Divina Maria Masjon Parhusip Mendrofa, Yudha Chrisman Moh Ardiansyah Monica Warih Widi Krisanti Muhammad Arifin Nur Muhammad Fathurrahman Pitayandanu Muhammad Iqbal Ansori Muhammad Tri Aditya Muhammad Wildan Ilyasa Nainggolan, Genadi Toar Notosiswoyo, Sudarto Nugroho, Arif Rianto Budi Nur Ali Amri Nur Ali Amri Nur Ali Amri Nur Ali Amri, Nur Ali Nurkhamim Nurkhamim Nurkhamim Nurkhamim, Nurkhamim Pambayu, Aldio Kresna Pasa, Titis Ilham Permadi, Fajar Peter Eka Rosadi Peter Eka Rosadi, Peter Eka Pradika, Soga Prasetya, Johan Danu Prastistho, Widyawanto Prawira, Hadi Putranto, Fery Izzan R.Horman, Juanita Rahmat Aditya Ramadhana Adi Rusyada Rendy Fahlevi Resa Risal Pradita Reza Adhi Fajar Rika Ampuh Hadiguna Rika Ernawati Rika Ernawati Rika Ernawati Rika Ernawati Rika Ernawati Rika Ernawati Rika Imawati Risaldi Hidayat Riyadi, Achmad Riyadi, Faizal Agung Rusdi Darmawan S. Koesnaryo Sabrina Umi Khabibah Sari Bahagiarti Kusumayudha Sari Bahagiarti Kusumayudha satria fitrio SB, Waterman Septianto, Erwin Setiyawa, Meindra Shahensah Anand Angggian R. Shofa Rijalul Haq Sigit Bagus Prabowo Singgih Saptono, Singgih Siregar, Imerilda Parlina Siswahyudianto Soekamto, Untung Stephanus Maria Eduat Sudarto Notosiswoyo Sudaryanto Suharsono Suharsono Suyono Suyono Suyono Suyono Suyono Syafrianto, Syafrianto Syamsul Arifin Syari Rahma Yanti Syihab, Zuher Tasidjawa, Gabriela Elisabeth Thiansy, Elsy Totok Sulistyo Tri Aditya, Muhammad Ulfa Nindya Kesuma Warsito utami, Hasrin citra Vega Vergiagara Vinansius Jimmy Jati Waloejo Adji, Dwi Poetranto Waterman SB Waterman SB Waterman SB Waterman SB Waterman Sulistyana Bargawa Waterman Sulistyana Bargawa Waterman Sulistyana Bargawa Waterman Sulistyana Bargawa Waterman Sulistyana Bargawa, Waterman Sulistyana Wawong Dwi Ratminah Wawong Dwi Ratminah, Wawong Dwi Wenny Kartika Widijanto, Eman Widodo, Lilik Eko Widyawanto Prastistho Winda Winda Yohana Nodarika Maharani Yohana Noradika Maharani Yohanes Ary Prayoga Yulantoro, Marchell Yulfanzah Zuher Syihab