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All Journal Jurnal Lahan Suboptimal TAMBANG Jurnal Ilmu Teknik Journal of Degraded and Mining Lands Management IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Penelitian Sains IJEMS (Indonesian Journal of Environmental Management and Sustainability) Seminar Nasional Lahan Suboptimal Prima Abdika: Jurnal Pengabdian Masyarakat SRIWIJAYA JOURNAL OF ENVIRONMENT BIOVALENTIA: Biological Research Journal International Journal of Science and Environment Ranah Research : Journal of Multidisciplinary Research and Development Mantis Journal of Fisheries Jurnal Ilmu Kesehatan Masyarakat
Eddy Ibrahim
Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Journal : Ranah Research : Journal of Multidisciplinary Research and Development

 1 
Karakterisasi Geokimia Overburden Tambang Batubara Dengan Metode NAPP Di Area PT. Bukit Asam, Tanjung Enim, Sumatera Selatan Rizkie, Dania; Ibrahim, Eddy; Setiawan, Budhi
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 6 No. 5 (2024): Ranah Research : Journal Of Multidisciplinary Research and Development (Juli 20
Publisher : Dinasti Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/rrj.v6i5.1050

Abstract

Material timbunan dari overburden dapat menyebabkan pembentukan air asam tambang (AAT), tujuan dari penelitian ini untuk pencegahan pembentukan AAT pada overburden dari tambang batubara, karakterisasi geokimia memberikan informasi batuan yang berpotensi membentuk AAT dengan menggunakan uji statik sehingga diperoleh nilai Net Acid Generation (NAG) dan Net Acid Producing Potency (NAPP), selanjutnya pH NAG dan NAPP diklasifikasikan menjadi Potential Acid-Forming (PAF) dan Non Acid Forming (NAF). Hasil dari penelitian ini menunjukkan material overburden dengan litologi claystone memiliki pH NAG 3,73 dan NAPP 55,49 Kg H2SO4/ton dan litologi Carbonaceous Claystone dengan pH NAG 3,45 dan NAPP 49,58 Kg H2SO4/ton, litologi sandstone dengan pH NAG 4,46 dan NAPP 59,69 Kg H2SO4/ton, ketiga jenis batuan ini diklasifikasikan menjadi lapisan PAF karena memiliki pH NAG yang rendah dan NAPP yang tinggi, material overburden dengan litologi siltstone memiliki pH NAG 4,66 dan NAPP -34,71 Kg H2SO4/ton. Batuan ini diklasifikasikan menjadi NAF karena memiliki pH NAG diatas 4,5 dan NAPP yang rendah.
Desain Geometri Lereng Optimal Pada Rencana Penggalian Ulang Material Timbunan Berdasarkan Parameter Geoteknik Melalui Pendekatan Tingkat Pemadatan Timbunan Melodi, Aldo; Ibrahim, Eddy; Komar, Syamsul
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 7 No. 4 (2025): Ranah Research : Journal Of Multidisciplinary Research and Development
Publisher : Dinasti Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/rrj.v7i4.1615

Abstract

This study analyzes the slope stability in Pit X of PT Bukit Asam, Tbk (PTBA), which is a former disposal area that has been re-excavated, resulting in the presence of old dump material. The objective of this study is to analyze and process the material properties used in assessing the slope stability in Pit X and to determine the optimal overall slope geometry for Pit X. In this study, the determination of material properties for slope stability analysis in Pit X was carried out by creating cross-sections, considering the position of boreholes, and processing material properties from the nearest borehole data using a class creation and interval creation approach for each material property. The material properties used are the median values of each class. The most optimal overall slope geometry consists of a single bench height of 6 meters, a single bench width of 12 meters (1:2 ratio), and a bench width of 23 meters. This slope geometry was applied to all cross-sections, resulting in a dynamic factor of safety (FoS) of 1.216 and a static FoS of 1.393 for cross-section A-A', a dynamic FoS of 1.552 and a static FoS of 2.016 for cross-section B-B', a dynamic FoS of 1.529 and a static FoS of 1.760 for cross-section C-C', and a dynamic FoS of 1.585 and a static FoS of 1.827 for cross-section D-D', all of which are considered safe. These FoS values were obtained under conditions immediately after rainfall had ceased, with a recorded rainfall intensity of 110.08 mm and a duration of 4.18 hours.
Co-Authors Amallia, RA Hoetary Tirta Anton Saputra, Anton Arie Kurniawan Budhi Setiawan Didik Susetyo Edward Saleh Edy Sutriyono Elisa Wildayana EPSB Taman Tono Fauziyah Fettymia, Fettymia Fitri Hadiah Fitriana Lasmana Fuad Rusydi Suwardi Fuad Rusydi Swardi Hartini Iskandar Hendra Hartono, Hendra Hikmah Utari Indra Yustian Irfannuddin Irfannuddin Izromaita Jumiah, Restu Laila Hanum Maulana Yusuf Melisyah, Melisyah Melodi, Aldo Merina Murti Muhammad Faizal Muhammad Hendri MUHAMMAD SAID musmualim musmualim, musmualim Nabila Aprianti Netty Kurniawati Ngudiantoro . Noprianty, Rika Onni Okta Dita Mayang Sari Pebrianto, Rosihan Peni Rostiarti Poedji Loekitowati Hariani Purba, Robekca Ratih Wijayanti, Ratih Restu Juniah Rika Noprianty Riki Rizki Ilahi Rizkie, Dania Robiyanto H Soesanto Roy Sitorus Satria Jaya Priatna, Satria Jaya Sinaga, Andi Parluhutan Sriyani Sopeana Subroto Subroto Suheryanto Sutopo Sutopo Syamsul Komar Taufik Toha Taufik Toha, Taufik Ubaidillah Anwar Prabu Ulma Aydilla Utami, Nyimas Ulfatry Wahyudi Putra, Rahmat Yulifa Handayani