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All Journal Journal of Degraded and Mining Lands Management JOURNAL ONLINE OF PHYSICS Jurnal Teknologi Mineral dan Batubara Indonesian Mining Journal IJEMS (Indonesian Journal of Environmental Management and Sustainability) Humantech : Jurnal Ilmiah Multidisiplin Indonesia NUSANTARA: Jurnal Pengabdian Kepada Masyarakat Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) TEKSTUR : Jurnal Teknologi Infrastruktur Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Jurnal Teknologi Mineral dan Batubara Jurnal Teknik dan teknologi tepat guna Jurnal Pelayanan Masyarakat Solusi Bersama : Jurnal Pengabdian Dan Kesejahteraan Masyarakat
Hisni Rahmi
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Religion Agriculture, Biological Sciences & Forestry 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 Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation

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Sosialisasi Reklamasi Tambang untuk Lingkungan Pertambangan Berkelanjutan di SMA N 19 Palembang Restu Juniah; Rosihan Febrianto; Yuli Andriani; Syaifudin Zakir; Hisni Rahmi
Jurnal Pelayanan Masyarakat Vol. 2 No. 2 (2025): Juni: Jurnal Pelayanan Masyarakat
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/jpm.v2i2.1838

Abstract

Mining is a two-edged sword, which makes a positive contribution to the economy but has a negative impact in the form of environmental degradation. Reclamation is a step taken in restoring former mining land to provide sustainable social, economic, and environmental benefits. This requires an early understanding of reclamation for the younger generation as agents of change. This community service activity aims to provide socialization about the concept, urgency, and practice of mine reclamation to students of Senior High School Number 19 Palembang as a form of environmental education towards sustainable mining. The methods used include interactive presentations and joint discussions. The results of the activity showed a significant increase in students' understanding of the issue of mine reclamation, as well as high enthusiasm and active participation in the entire series of activities. This activity contributes to fostering ecological awareness among students, as well as a form of collaboration between higher education institutions and schools in supporting sustainable development in the mining sector. The development of a collaborative-based follow-up program is needed so that this environmental education can take place continuously.
PENGARUH FLY ASH DAN KAPUR TOHOR TERHADAP KUALITAS AIR ASAM TAMBANG (pH dan TSS) DI PT. BARA PRIMA PRATAMA Rahmi, Hisni; Nelvi, Afni; Situmorang, Boyman
Jurnal Teknologi Infrastruktur Vol 3 No 1 (2023): Jurnal Teknologi Infrastruktur Volume 3, Nomor 1, Juni 2023
Publisher : Fakultas Teknik Universitas Panca Bhakti

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Acid mine water management can be carried out by active treatment and passive treatment. Acid mine water management in PT. Bara Prima Pratama is carried out with an active method by liming. The purpose of this study was to analyze the effect of the composition of a mixture of fly ash and quicklime as much as 0.30 grams on the pH and TSS parameters of acid mine water. The neutralization process is carried out on a laboratory scale using experimental methods with the addition of fly ash coagulant and quicklime in 9 test variations. Significant pH changes with an initial pH of 3.3 occurred at dose variations of 10:90 (1st try, pH 8.1), 20:80 (2nd try, pH 7.9) and 30:70 (3rd try, pH 7.6). This shows that to neutralize the pH requires a greater dose of quicklime in the composition of the mixture (quicklime can increase the pH value quickly). Furthermore, TSS testing was also carried out 9 times with an initial TSS value of 123 mg/L. After neutralization was obtained, the TSS value continued to increase in proportion to the composition carried out (test 9, TSS value 219 mg/L) but still met environmental quality standards with a threshold value of 400 mg/L. This shows that the use of fly ash and quicklime does not have a major effect on TSS changes.
PENILAIAN TEKNIS DAN EKONOMIS KUALITAS PENGELOLAAN LINGKUNGAN STOCKPILE BATUBARA UNTUK LINGKUNGAN BERKELANJUTAN Juniah, Restu; Ambarita, Novitasari; Syarifudin; Zakir, Syaifudin; Rahmi, Hisni; Amanda, Ridho Rizky
Indonesian Mining Journal Vol 28 No 1 (2025): Indoneisan Mining Journal, April 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol28.No1.2025.1595

Abstract

Coal mining has positive impacts in the form of increasing the national economy and people's income. However, it also has negative impacts, including the decrease of environmental quality such as air, soil, and noise, as well as the potential for spontaneous combustion. The research was conducted to assess the technical and economic aspects of environmental management at coal stockpiles in the Tarahan Port Unit of PT Bukit Asam Tbk to support environmental sustainability. The technical assessment of stockpile environmental management was carried out by comparing observation results with the Environmental Management and Monitoring Plan Document (RKL/RPL) and Indonesia’s applicable Environmental Quality Standards. The economic assessment focused on the cost of environmental monitoring and management by observing the discrepancies between the planned and realization in the first and second quarters. The technical assessment results show that environmental management at the stockpile has been implemented effectively. Air quality parameters and noise levels remain below the established standards, soil quality is classified good as indicated by vegetation growth, and no spontaneous combustion occurred during the observation period. The economic assessment revealed a discrepancy of 2.02% between the planned cost of IDR 121,183,548 to the actual realization of IDR 123,641,668. This increase was attributed to the construction of a dust reduction system and an operational chimney for the 2X8 MW Steam Power Plant, through the use of Electrostatic Precipitators. The study recommends a detailed inventory of environmental cost plans and potential cost escalation to anticipate risk factors. It also highlights the need for regular maintenance of machines that are known to frequently produce emissions. These efforts are expected to reduce the emissions and lower the costs of environmental management and monitoring.
ANALISIS NILAI KEEKONOMIAN PERUNTUKAN LAHAN BEKAS TAMBANG BATUBARA SEBAGAI ASIMILATOR KARBON Yovanda, Ridho; Juniah, Restu; Yulianita, Anna; Anaperta, Yoszi; Rahmi, Hisni
Jurnal Teknologi Mineral dan Batubara Vol 19 No 1 (2023): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No1.2023.1311

Abstract

The environmental issues that usually arise from mining activities are ex-coal mining lands in the form of mine pits (void) and land (non void) which are not managed properly. The company has an obligation to manage ex-coal mining land so that the environment remains sustainable and benefits the community by carrying out reclamation activities. Reclamation of ex-coal mining land by planting oil palm provides benefits in the form of incomes and as a carbon assimilator. This study aims to analyze the economics value of the ex-coal mining land use as a carbon assimilator by using the extended NPV analysis method. The result of analysis revealed a positive extended NPV value of IDR. 1,961,057,020,-, which means that ex-coal mining land can provide positive benefits as a carbon assimilator.
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”.
Geotechnical zonation and bearing capacity assessment for risk-informed foundation design in the heterogeneous soils of Girsang Sipangan Bolon, Indonesia Nata, Refky Adi; Ren, Gaofeng; Andas, Jukepsa; Yulanda, Yudi Arista; Rahmi, Hisni; Syahmer, Verra
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9567

Abstract

Subsurface?failures, often caused by poor site investigation, are a serious issue in geotechnical engineering. This research focused on unpredictable soil response at a geologically complex site in Girsang Sipangan Bolon District, Indonesia, where very high significant variation in subsoil conditions led to foundation failure. The subsurface profile was studied, and the ultimate bearing capacity (UBC) was first characterized in this research for safe foundation design. The site investigation utilized 11 boreholes, including Standard Penetration Tests (SPTs) and undisturbed sampling. They processed the readings using Meyerhof's theory and determined the UBC for strip, pad, and circular foundations. The findings showed extremely high subsurface heterogeneity (with SPT-N values between very soft top layers and ultra-dense rock-coral). Therefore, there?is a large variation in the predicted UBC. Based on statistical analysis of the data, clear geotechnical zones were defined, with some boreholes showing high, consistent capacity and others showing locally weak strata. Fill and ring foundations also had greater theoretical bearing?capacities than rectangular footings. The main conclusion is that?sufficiently pronounced subsurface heterogeneity requires site-specific geotechnical investigations to minimize the risk of differential settlement. Therefore, foundation design cannot be uniform throughout the site; deep foundations, such as end-bearing piles, are suggested in highly variable zones to transfer loads to competent strata and ensure long-term structural safety.
Estimasi Sumberdaya Batubara Menggunakan Metode Kriging di PT. Inti Bara Perdana, Taba Penanjung Qurratul A’yun; Hisni Rahmi; Yudi Arista Yulanda
JURAL RISET RUMPUN ILMU TEKNIK Vol. 5 No. 1 (2026): April: Jurnal Riset Rumpun Ilmu Teknik
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v5i1.8164

Abstract

This study aims to estimate coal resources using the kriging method at PT. Inti Bara Perdana, Taba Penanjung, Bengkulu. Geostatistical analysis was applied to evaluate spatial variability of coal quality parameters, including total moisture (TM), inherent moisture (IM), ash content (ASH), volatile matter (VM), fixed carbon (FC), and calorific value (CV). The research utilized drilling data with an average spacing of 80 meters. Variogram modeling was conducted using SGeMS software, employing spherical models to determine nugget, sill, and range parameters. The results show a low nugget effect (0%) indicating strong spatial continuity. The obtained ranges vary between 180–1296 meters depending on the parameter. Blo./ck kriging estimation was performed using block dimensions of 25 × 25 × 8 meters and a coal density of 1.3 ton/m³. The total estimated coal resource up to an elevation of 230 m is 253,500 tons. These findings demonstrate that kriging provides reliable resource estimation and supports mine planning optimization. This research contributes to improving coal resource evaluation accuracy and operational decision-making in open-pit mining.
Co-Authors Afni Nelvi Ahmad Fadhly Amanda, Ridho Rizky Ambarita, Novitasari Anaperta, Yoszi Andy Yanottama Angga Saputra Anna Yulianita Azhar Kholiq Affandi C Eka Putra, Jevie Diah Wully Agustine Didik Susetyo Dimas Agung Permadi Elmawati Elmawati Fadhly, Ahmad Jukepsa Andas M. Randi Al Falah Assyakiri Mariza Syahyuda, Nelsy Marluga Banjarnahor, Ely Muhammad Faisal Seprizal Nata, Refky Adi Nelvi, Afni Nofriadiman, Nofriadiman Nuriil Tadersi, Risnaliyah Qurratul A’yun Ren, Gaofeng Restu Juniah restu juniah, restu Restu Permana Riam Marlina A Ridho Yovanda Rosihan Febrianto Situmorang, Boyman Syahmer, Verra Syaifudin Zakir Syaifudin Zakir, Syaifudin Syarifudin Vina Lestari Riyandini, Vina Lestari Yovanda, Ridho Yudi Arista Yulanda Yuli Andriani Zella Navtalia