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All Journal OPHIOLITE : Jurnal Geologi Terapan Majalah Pengabdian Indonesia
Deniyatno
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Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences

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Potensi Likuifaksi Di Kabupaten Konawe Utara Sulawesi Tenggara Berdasarkan Metode Susceptibility Rating Factors (SRF) Cendra Jaya, Rio Irhan Mais; Deniyatno
OPHIOLITE: Jurnal Geologi Terapan Vol 6 No 1 (2024): APRIL 2024
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56099/ophi.v6i1.p11-18

Abstract

The liquefaction disaster that occurred in Palu, Central Sulawesi, was caused by a 7.5 SR. The movement of the Palu-Koro Fault triggered the earthquake which was then followed by liquefaction. North Konawe Regency, Southeast Sulawesi, is crossed by the Lawanopo Fault which is a continuation of the Palu-Koro Fault, so that North Konawe Regency has the potential for liquefaction. BMKG seismic data records that >90% of earthquake events in North Konawe are triggered by movements of the Lawanopo Fault. This research focuses on the potential for liquefaction that can be triggered by earthquake activity in North Konawe Regency. Susceptibility Rating Factor (SRF) method is used by calculating the liquefaction susceptibility index (ISL) based on historical parameters, geological data, soil texture and composition, and hydrogeological data. North Konawe Regency has 5% areas with high liquefaction potential, 2% medium potential, 6% low potential, and 87% very low potential. Areas with high potential (5%) and medium potential (2%) are densely populated areas because they are located in the center of the capital city of North Konawe Regency. This area is a basin formed due to the activity of the Lawanopo Fault.
Rancangan Desain Sump pada Pit Jamrud Kabupaten Konawe Utara Sulawesi Tenggara Ambarsari, Ika Sartika; Deniyatno; Anshari, Erwin; Setiawan, Arif
OPHIOLITE: Jurnal Geologi Terapan Vol 6 No 2 (2024): OKTOBER 2024
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56099/ophi.v6i2.p64-71

Abstract

A sump is a drainage facility located at the bottom of the pit. The sump design must be appropriate so that runoff water flowing on the surface can be maximally accommodated. This can overcome stagnant water on the ground and avoid disruptions to mining productivity. Jamrud Pit has an area of 4.14 ha and is mined using the open pit method. The purpose of this research is to calculate and analyze the water discharge that will enter the sump and design the sump according to the volume of runoff water entering the sump. Based on the research results, there are two sumps placed at the bottom of the pit according to the pit cross-section model. Sump 1 has a runoff water volume of 2,914.24 m3, so it is designed with a top area of 27 x 27 m2 and a base area of 21 x 21 m2 with a depth of 5 m and can accommodate a water volume of 2,997.6 m3. While in sump 2, the volume of incoming runoff water is 579.85 m3, so it is designed with a top area of 14 x 14 m2 and a base area of 8 x 8 m2 with a depth of 5 m so that it can accommodate a water volume of 663.18 m3. The sump cross-section model is adjusted to the characteristics of the soil layer, namely the trapezoidal model.
Identification Clean Water Sources in Mining Areas at Amohola Village Moramo sub-district South Konawe Firdaus; Awaliah Nafiu, Wd Rizky; Anshari, Erwin; Wahab; Deniyatno; Mili, Marwan Zam
Majalah Pengabdian Indonesia Vol. 2 No. 1 (2025): April 2025
Publisher : Teras Kampus as a member of PT Palem Edukasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69616/maindo.v2i1.251

Abstract

In order to meet the daily water needs of the Amohola Village community who currently rely on dug well water mixed with sediment and odor, community service has been carried out by the Mining Engineering Department of Halu Oleo University. The purpose of this service is to find clean water sources through groundwater exploration using the geoelectric method. Based on the results of groundwater measurements with the geoelectric method, it can be interpreted that the groundwater aquifer is located at a depth of 15-45 meters, with a low resistivity value of 371 ohm.m. This indicates that this groundwater layer can be considered a depressed aquifer, which is characterized by low resistivity. The low resistivity is likely caused by impermeable rock types such as clay around the aquifer. Based on these findings, it is recommended that the village government and community conduct groundwater drilling at a depth of 15 to 45 meters. By drilling at this depth, it is hoped that the Amohola Village community can gain access to a safer and higher quality clean water source for their daily needs. In the drilling process, it is also necessary to pay attention to technical and environmental factors to ensure the success of this project and preserve the local environment.
Community Assistance in the utilization of Nickel Slag in the Morosi Village Firdaus; Awaliah, Wd Rizky; Anshari, Erwin; Wahab; Deniyatno; Mili, Marwan Zam
Majalah Pengabdian Indonesia Vol. 1 No. 2 (2024): Agustus 2024
Publisher : Teras Kampus as a member of PT Palem Edukasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69616/maindo.v1i2.15

Abstract

Morosi Village located in Konawe Regency is one of the areas in which there is a nickel processing company. The nickel processing produces solid waste, one of which is nickel slag. The amount of nickel slag is accumulating day by day, because each process of refining one ton of nickel product produces 50 times the solid waste, equivalent to 50 tons. So that from the results of quite a lot of waste, research was carried out to use solid waste as a concrete forming material, either as coarse and fine aggregate, or as a cement mixture. Government Regulation No. 101 of 2014 classifies nickel slag as B3 waste hazard category 2 with waste code B403. This means that nickel slag is a waste that has a delayed effect, and has an indirect impact on humans and the environment. Meanwhile, at the end of 2019, the Indonesian National Standard (SNI) concerning the choice of nickel slag material from electric furnaces. This SNI was also prepared by the Ministry of Industry to support the development of nickel slag standards and as a solution for nickel slag management. The existence of SNI is also intended as a reference to optimize the use of nickel slag as aggregate, substitute for natural aggregate and other uses. Some examples of products made from nickel slag include bricks, precast and ready-to-print concrete, road base and field, soil improvers, growing media and fertilizers, mortar and cement slag, composite portland cement, and cement geopolymers. To accommodate the use of nickel slag, assistance is needed to the community, especially in Morosi Village to be able to process with appropriate, effective and efficient technology in accordance with its physical characteristics and chemical characteristics. This will be an alternative to reduce the amount of nickel slag that can pollute the environment, in addition to increasing people's income.
Co-Authors Ambarsari, Ika Sartika Anshari, Erwin Arif Setiawan Awaliah Nafiu, Wd Rizky Awaliah, Wd Rizky Firdaus Jaya, Rio Irhan Mais Cendra Mili, Marwan Zam Wahab