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Ahmad Zainuri
Geology Engineering Study Program, Universitas Negeri Gorontalo, Indonesia
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science

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Kajian Geologi Teknik dan Potensi Longsor pada Segmen IG1 dan IG2 Akses Tambang di Kabupaten Pohuwato, Gorontalo Immanuel Ginting; Aang Panji Permana; Ahmad Zainuri
Journal of Applied Geoscience and Engineering Vol 4, No 2 : Desember 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v4i2.37128

Abstract

This study examines the geological conditions and slope stability of segments IG1 and IG2 in the Magazine access area of the Pani Gold Project, Pohuwato Regency. The research methods include geological mapping, scanline analysis, kinematic evaluation using stereonet, and Rock Mass Rating (RMR) and Slope Mass Rating (SMR) assessments. Segment IG1 consists of volcanic breccia with an RMR value of 57 (Class III, Fair Rock) and an SMR value of 45–50 (Poor), indicating wedge failure potential. Segment IG2 is dominated by dacite with an RMR of 60 (Class III, Fair Rock) and an SMR of 55–60 (Fair–Good), showing a tendency toward toppling failure. The results suggest that IG2 is relatively more stable than IG1, although localized failures may occur. Technical recommendations include slope reinforcement with rock bolts, shotcrete, and drainage systems to minimize slope failure risks.
Identifikasi Lapisan Akuifer Berdasarkan Survei Geolistrik Konfigurasi Schlumberger di Desa Botumoputi, Kabupaten Gorontalo Aril A.H Sahidah; Ahmad Zainuri; Noviar Akase
Journal of Applied Geoscience and Engineering Vol 4, No 2 : Desember 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v4i2.36986

Abstract

A continuously growing population day by day means that the need for water is also increasing.The majority of the Botumoputi Village community uses groundwater every day through dug wells and drilled wells for their daily needs. The purpose of the study was to determine the subsurface geological conditions that can be used as a reference in estimating the location, thickness, depth and type of aquifer. The method used is the resistivity geoelectric method using the Schlumberger configuration. Measurements were carried out at 3 points with a span length of 300 m each. Data processing and interpretation using software IPI2win. The results of processing Schlumberger configuration geoelectric data and subsurface geological interpretation to identify the type of groundwater aquifer in the Botumoputi area show 3 layers of rock types based on their resistivity values, namely top soil, clay and sand. It is estimated that the potential for groundwater is found in TS1 and TS2 where the lithology that acts as an aquifer is sandstone with a resistivity value of 16.8 - 42.7 ohms with a depth ranging from 3.93 - 17.2 m with a thickness of 8.88 - 13.27 m and is interpreted as a shallow aquifer.
Co-Authors Aang Panji Permana Aril A.H Sahidah Immanuel Ginting Noviar Akase