AMSIR AMSIR, ZAKIA MASRURAH, NURUL AZMI, MUHAMMAD SYUKRI, CUT ZAHARA ROZA

PENYELIDIKAN WEAK ZONE MENGGUNAKAN METODE WELL LOGGING DIKECAMATAN MONTASIK DAN INGIN JAYA, ACEH BESAR

Introduction

Penyelidikan weak zone menggunakan metode well logging dikecamatan montasik dan ingin jaya, aceh besar. Penyelidikan zona lemah di Aceh Besar menggunakan well logging. Mengidentifikasi zona lemah signifikan (lempung/pasir) pada kedalaman dan nilai resistivitas tertentu untuk pemahaman bawah permukaan.

Abstract

Weak zone investigation using well logging method in Montasik and Ingin Jaya sub-districts, Aceh Besar has been conducted at ten borehole points. In this study, the well logging method was used to obtain and determine the presence of weak zones in ten boreholes in Aceh Besar District. The subsurface data obtained from this well logging method is in the form of cutting data, namely subsurface rock lithology and electrical logging data, namely resistivity log values. Based on the results of data analysis and interpretation, these ten boreholes have weak zones and the most significant ones are found at four borehole points, namely boreholes T1, T2, T5, and T10. Point T1 is located at a depth of 76 - 106 m, which is a clay layer with a resistivity value of 105 - 289 ?m. Point T2 is at a depth of 45 - 57 m, which is a sand layer with a resistivity value of 32 - 38 ?m. Point T5 is at a depth of 0 - 40 m, which is a clay layer with a resistivity value of 26 - 184 ?m. Point T10 is at a depth of 60 - 62.5 m and 62.5 - 80 m, namely there are layers of sand and passive clay with resistivity values of 3 - 117 ?m and 3 - 111 ?m. keywords: Aceh Besar, resistivity value, Well Logging, Weak Zone

Review

The submitted manuscript, "PENYELIDIKAN WEAK ZONE MENGGUNAKAN METODE WELL LOGGING DIKECAMATAN MONTASIK DAN INGIN JAYA, ACEH BESAR," presents a focused investigation into subsurface weak zones within the Montasik and Ingin Jaya sub-districts of Aceh Besar. This study addresses a crucial geotechnical and geological concern by employing the well logging method across ten borehole points. The clear objective of identifying and characterizing these weak zones makes this research directly relevant for local infrastructure planning, groundwater management, or hazard assessment in the region, providing foundational data for informed decision-making. The methodology employed integrates two primary data sources: cutting data to determine subsurface rock lithology and electrical logging data, specifically resistivity log values. This combination allows for a robust characterization of subsurface conditions. The abstract indicates successful identification of weak zones in all ten boreholes, with particular emphasis on four significant locations: T1, T2, T5, and T10. Detailed findings include a clay layer at T1 (76-106 m, 105-289 ?m resistivity), a sand layer at T2 (45-57 m, 32-38 ?m resistivity), a near-surface clay layer at T5 (0-40 m, 26-184 ?m resistivity), and layered sand and passive clay at T10 (60-80 m, 3-117 ?m and 3-111 ?m resistivity). These specific details highlight the granular level of investigation and the concrete results obtained. This study demonstrates a practical application of well logging techniques for subsurface characterization in a region where such data is invaluable. The detailed presentation of depths, lithologies, and corresponding resistivity values for the identified weak zones represents a significant strength, providing actionable insights. While the abstract effectively outlines the findings, the full paper would benefit from a deeper discussion on the geological context explaining the presence and characteristics of these weak zones, and their potential implications for engineering, hydrogeology, or environmental considerations in Aceh Besar. Overall, this research contributes valuable subsurface information, laying a strong foundation for future development and risk management strategies in the study area.

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