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All Journal Jurnal RISET Geologi dan Pertambangan Journal of Geoscience, Engineering, Environment, and Technology Eksakta : Berkala Ilmiah Bidang MIPA Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Jurnal Ilmiah Geologi pangea Bulletin of Geology Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Imam Achmad Sadisun
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation

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Studi Geologi Teknik Tapak Penyimpanan Akhir Limbah Radioaktif (LRA) Demo Plant Tipe NSD Kedalaman Menengah di Puspiptek, Serpong Syaeful, Heri; Sucipta, Sucipta; Sadisun, Imam Achmad
EKSPLORIUM Vol. 35 No. 1 (2014): MEI 2014
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2014.35.1.1367

Abstract

Final disposal of radioactive waste intended to keep radioactive substances does not released to the environment until the substance activity decreased to the safe level. Storage concept of radioactive waste (RAW) final disposal that will be developed at the area of Puspiptek, Serpong is near surface disposal (NSD). Based on depth, NSD divided on two type, near surface NSD and medium depth NSD. Concept NSD in this research is medium depth NSD, which is between 30–300 meters. During NSD construction in medium-depth required the works of sub-surface excavation or tunneling. Analysis of in-situ stresses and sub-surface deformation performed to recognize the stress magnitude and its distribution that developed in soil/rock as well as the deformation occurred when sub-surface excavation takes place. Based on the analysis, acknowledged the magnitude of tensional and compression stress and its distribution that range from -441 kPa to 4.028 kPa with values of natural deformation or without reinforcement between 4.4 to 13.5 cm. A rather high deformation value which is achieved 13.5 cm leads to necessity of engineering reinforcement during excavation. The designs of engineering reinforcement on every excavation stage refer to the result of modeling analysis of stress and deformation distribution pattern.
Hydrogeological Evaluation Based on Water Quality Parameters and Groundwater Level Conditions in Kolaka and Tangketada Basins, Southeast Sulawesi Salim, Muhammad Abdul Rahman; Irawan, Dasapta Erwin; Sadisun, Imam Achmad; Herlambang Fredomeseliano, Bonanza; Kurniawan
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 26 No. 04 (2025): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol26-iss04/623

Abstract

This study aims to evaluate the hydrogeological conditions of Pomalaa through analysis of groundwater flow patterns, groundwater level fluctuations, and water quality parameters. The methods used include geological and hydrogeological mapping, groundwater level measurements, and delineation of groundwater basins based on regional topography and lithological data. Water quality analysis was conducted by measuring temperature, Total Dissolved Solids (TDS), electrical conductivity (EC), and pH parameters. The study area consists of five main rock units, with three types of aquifers based on lithological characteristics, namely intergranular and fractured aquifers, low-yield aquifers, and rare aquifers. The results of the study show that groundwater flow patterns follow natural hydraulic gradients, but fluctuate due to environmental changes and mining activities. Several points show significant water quality degradation, with pH, TDS, and EC values exceeding drinking water thresholds. The water quality index shows variations from very good (57), good (49), poor (23), very poor (22), to unfit for drinking (48). The solution offered by this study is the need for mitigation strategies and sustainable water resource management, which is of utmost urgency to maintain ecosystem balance and ensure the availability of clean water for the community and industry in the future.
Co-Authors Absari, Hirundini Rustica Adrin Tohari Benyamin Sapiie Dasapta Erwin Irawan, Dasapta Erwin Heri Syaeful Herlambang Fredomeseliano, Bonanza Ipranta Ipranta, Ipranta Kartiko, Rendy Dwi Kurniawan Lilik Eko Widodo Miftahul Jannah Moch Hilmi Zaenal Putra Naufal, Muhammad Adi Nurwijayanti Pamumpuni, Astyka Paulus Pramono Rahardjo Prihadi Soemantidiredja Rendi Dwi Kartiko Rifki Asrul Sani Robby Ginanjar Salim, Muhammad Abdul Rahman Septiandi, Muhammad Iqbal Sucipta Sucipta Wiwarsono, Fransisko Zhafira, Dzikra