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Rodiyah Nursani
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Analisis Kebutuhan Kipas Untuk Sistem Air Flow Tambang dalam Pt Bukit Asam TBK Unit Pertambangan Ombilin Dwi Wahyu Ningsih; Aris Susilo; Rodiyah Nursani
Jurnal Kendali Teknik dan Sains Vol. 4 No. 3 (2026): Juli Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v4i3.6521

Abstract

The ventilation system is a critical factor in underground mining operations, ensuring the availability of fresh air and the dilution of hazardous gases for workers. This study will be conducted at PT Bukit Asam Tbk’s Ombilin Mining Unit (UPO) and will focus on analyzing fan requirements to optimize the airflow system. The issues addressed in this study include the imbalance between the supplied air volume and the size of the working area, as well as the potential for methane (CH₄) and carbon monoxide (CO) accumulation. The research methodology involves direct field measurements of ventilation parameters- such as air velocity, airway cross-sectional area, humidity, and gas concentration levels. The collected data will be processed mathematically to calculate total fresh air requirements based on the number of workers, machinery, and occupational health standards. The study aims to provide technical recommendations regarding the appropriate specifications and placement of fans (both main and auxiliary) to create a safe and productive working environment in compliance with applicable mining safety regulations.
Analisis Pengelolaan Air Asam Tambang Menggunakan Kapur Tohor (CaO) di KPL 18 Stockpile PT Royaltama Mulia Kontraktorindo Kabupaten Muara Enim Neli Purwanti; Rodiyah Nursani; Aris Susilo
Jurnal Kendali Teknik dan Sains Vol. 4 No. 3 (2026): Juli Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v4i3.6694

Abstract

Acid mine drainage (AMD) is one of the negative impacts of mining activities that can significantly reduce environmental quality due to its low pH and high concentration of dissolved heavy metals. Therefore, proper and effective treatment is required before the water is discharged into the surrounding environment. This study aims to analyze the management of acid mine drainage using an active treatment method with quicklime (CaO) and to determine the appropriate dosage required at KPL 18 Stockpile of RMKO (RMKO), Muara Enim Regency. The research methods include field observations and data collection consisting of primary data such as pH, water discharge, pond volume, and lime dosage, as well as secondary data including location maps and rainfall data. Data analysis was carried out through pH measurements at the inlet and outlet channels and supported by jar test experiments to evaluate the effectiveness of lime addition. The results indicate that the pH values at the inlet range from 4.41 to 4.47, while at the outlet they range from 7.81 to .94, which comply with environmental quality standards (pH 6–9). The treatment process involves water flow through channels, processing in settling ponds with the addition of quicklime , followed by discharge into receiving water bodies. The use of quicklime has proven effective in increasing pH and facilitating the precipitation of dissolved metals, indicating that this method is efficient and applicable for AMD management.
Co-Authors Aris Susilo Dwi Wahyu Ningsih Neli Purwanti