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All Journal JOURNAL ONLINE OF PHYSICS Prosiding Seminar Nasional Sains dan Teknologi Terapan Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN Journal of Earth and Marine Technology (JEMT) KOMMAS: Jurnal Pengabdian Kepada Masyarakat MINERAL Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Diah Wully Agustine
Teknik Geologi - Institut Teknologi Adhi Tama Surabaya
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Kajian Teknis Daya Dukung Tanah untuk Menentukan Kapasitas Optimum Stockpile Utama PT Putra Muba Coal Zella Navtalia; Hisni Rahmi; Muhammad Faisal Seprizal; Diah Wully Agustine; Dimas Agung Permadi; Andy Yanottama
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 1 (2025): April : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i1.4777

Abstract

Settlement of the ground floor of stockpile is caused by ground pressure of coal pile which is bigger than stockpile floor bearing capacity leads to bury under of some coal. So it is needed to do a study of optimum capacity by stockpile floor bearing capacity. Study of stockpile optimum capacity is started by calculating Californian Bearing Ratio (CBR) of stockpile subgrade using dynamic cone penetrometer in some location on each of the stockpile compartment. CBR value of stockpile subgrade converted into bearing ratio, so the maximum tonage of stockpile can be known. By considerating of pile height, angle of repose of low grade coal, monthly production target, and the road geometry for mechanical equipment access purpose, the optimum capacity of PT Putra Muba Coal stockpile is 198.549,95 ton, which divided into seven coal piles.
Analisis Kebutuhan Alat Muat dan Alat Angkut untuk Perubahan Shift Kerja pada Quarry Batugamping PT X, Jawa Barat: Analysis of Loading and Hauling Equipment Requirements for a Shift Work Change at a Limestone Quarry PT X, West Java Seprizal, Muhammad Faisal; Yanottama, Andy; Permadi, Dimas Agung; Navtalia, Zella; Agustine, Diah Wully
MINERAL Vol 10 No 2 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/h0ejr004

Abstract

PT X is a company engaged in the limestone mining sector and simultaneously serves as a cement supplier. The company plans to transition from a three-shift work schedule to a two-shift system. This decision is driven by the increasing costs associated with mining, safety concerns, and time losses due to equipment maintenance, following various evaluations conducted by the company's management. This research aims to analyze the requirements for loading and transportation equipment necessary to achieve an annual production target of 4,500,000 tons after the implementation of the two-shift work schedule. The research methodology employed is quantitative, encompassing the collection of both primary and secondary data, as well as an analysis of equipment productivity. The findings indicate that to maintain the production target, it is essential to replace the current loading equipment from the CAT 988B wheel loader to the CAT 990H wheel loader. Additionally, adjustments to the number of equipment are required, including two units of the CAT 990H wheel loader and seven units of the CAT 773 dump truck for Crusher 1, as well as two units of the CAT 992K wheel loader and eight units of the CAT 777D dump truck for Crusher 2. The production capacity of this equipment configuration reaches 4,575,457 tons per year, demonstrating that the production target can be optimally met despite the reduction in the number of work shifts.
REDESIGN ANALISIS STABILITAS LERENG OUT PIT DUMP (OPD) S2 PADA PIT “ATHRAN”, LAPANGAN CAS, KALIMANTAN TIMUR Agustine, Diah Wully; Navtalia, Zella Navtalia; Rahmi, Hisni; Seprizal, Muhammad Faisal S; Tadersi, Risnaliyah Nuriil
JOURNAL ONLINE OF PHYSICS Vol. 11 No. 1 (2025): JOP (Journal Online of Physics) Vol 11 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v11i1.50012

Abstract

Kegiatan penambangan terbuka di Pit “Athran”, Kalimantan Timur, menghasilkan material buangan dalam jumlah besar sehingga memerlukan desain out pit dump (OPD) yang stabil dan aman. Variasi litologi Formasi Warukin dan Formasi Dahor yang terdiri dari batupasir, batulempung, batubara, serta material lepas memengaruhi perilaku geoteknik dan potensi ketidakstabilan lereng. Penelitian ini menganalisis kestabilan lereng OPD S2 menggunakan metode Janbu sebagai pendekatan utama karena sesuai untuk material non-kohesif dan heterogen. Beberapa skenario desain diuji melalui pemodelan numerik dengan mempertimbangkan kondisi air tanah, beban lalu lintas alat berat, serta variasi elevasi dan jenis material timbunan. Hasil analisis menunjukkan variasi nilai faktor keamanan (FK), mulai dari kondisi kritis (FK 1,161), nearly stable (FK 1,220), hingga sangat stabil (FK 1,48). Desain paling aman dicapai pada konfigurasi 3 bench dengan ketinggian maksimal 30 m, penggunaan material lebih kompak pada toe, serta penghindaran water ponding. Rekomendasi ini menjadi acuan teknis untuk meningkatkan keselamatan dan efisiensi operasi penimbunan di OPD S2 Pit “Athran”.
Co-Authors Ahmad Fadhly Aleik Ainu Abdilbar Andy Yanottama Angga Saputra Batfutu, Maria Ines Bima Joko Prasetyo Dimas Agung Permadi Handoko Teguh Wibowo Heni Siska Wiyanti Heni Siska Wiyanti Heni Siska Wiyanti Heni Siska Wiyanti Hisni Rahmi Jusfarida Jusfarida Lena Maretha Salindeho Lena Maretha Salindeho Lena Maretha Salindeho Lena Maretha Salindeho Lena Maretha Silindeho Maria Ines Batfutu Muhammad Faisal Seprizal Naufal, Zakin Navtalia, Zella Navtalia, Zella Navtalia Nuriil Tadersi, Risnaliyah Permadi, Dimas Agung Prasetyo, Bima Joko Purwo, Sugeng Salindeho, Lena Maretha Samuel Sirait Seprizal, Muhammad Faisal Seprizal, Muhammad Faisal S Silindeho, Lena Maretha Sirait, Samuel Sugeng Purwo Wiyanti, Heni Siska Yanottama, Andy Zakin Naufal Zella Navtalia