Analysis of Soil Layer Structure Using Geoelectric Method on Tawaeli-Toboli Road Section Km 49+450

DOI

10.2991/978-94-6463-768-7_28How to use a DOI?

Keywords

Soil Layer Structure; Geoelectric and Tawaeli-Toboli Road

Abstract

On July 20 2023, a landslide occurred on the Tawaeli-Toboli road section km 49+450. Landslides are influenced by a decrease in soil strength due to increased air content and pore air pressure (increasing air content will reduce soil strength, especially cohesive soil). The aim of this research is to determine the structure of soil layers that influence slope stability on the Tawaeli-Toboli KM 49+450 road, Tanantovea District, Donggala Regency, Central Sulawesi. Using the resistivity geoelectric method, namely the 2D geoelectric configuration method. When testing 1 inclined track using 10 electrodes with a distance between each electrode of 3 m, the total length of the track is 30 m. The results of the slip plane analysis show that the type of landslide on the slope is a translational landslide. The meaning of a landslide is moving a mass of soil and rock on a flat or sloping sliding surface. This type of landslide usually occurs on weathered rock. The results of geoelectric data processing show that the vertical track has resistivity values ​​ranging from 3.21 Ωm to 160 Ωm. The first layer with a resistivity value of 3.21 Ωm to 52.5 Ωm is thought to be a layer of sand soil (sand). The second layer with a resistivity value of 52.5 Ωm to 160 Ωm is thought to be the Deeply Weathered Gneiss layer. The greater the depth of the soil, the greater the resistivity value, which is thought to be the Weathered Gneiss layer.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Jusna Ningsih
AU  - Sriyati Ramadhani
AU  - Martini
AU  - Hendra Setiawan
AU  - Taufik Hidayat
AU  - Dhiva Regina Putri
PY  - 2025
DA  - 2025/07/07
TI  - Analysis of Soil Layer Structure Using Geoelectric Method on Tawaeli-Toboli Road Section Km 49+450
BT  - Proceedings of the 3rd International Conference on Science in Engineering and Technology (ICOSIET 2024)
PB  - Atlantis Press
SP  - 251
EP  - 258
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-768-7_28
DO  - 10.2991/978-94-6463-768-7_28
ID  - Ningsih2025
ER  -