Slope Stability Analysis Using Electrical Resistivity Tomography and Limit Equilibrium Method: A Case Study from Girimulyo, Kulon Progo

Putri Anjary Widya Santie; Wahyu Wilopo; Fikri Faris

doi:10.22146/jag.97467

Slope Stability Analysis Using Electrical Resistivity Tomography and Limit Equilibrium Method: A Case Study from Girimulyo, Kulon Progo

https://doi.org/10.22146/jag.97467

Putri Anjary Widya Santie^(1*), Wahyu Wilopo⁽²⁾, Fikri Faris⁽³⁾

(1) Civil and Environment Engineering Department, Faculty of Engineering, Universitas Gadjah Mada
(2) Department of Geological Engineering, Faculty of Engineering, Universitas Gadjah Mada
(3) Civil and Environment Engineering Department, Faculty of Engineering, Universitas Gadjah Mada
(*) Corresponding Author

Abstract

Girimulyo sub-district is one of the areas with high landslide risk in Kulon Progo Regency. On March 12, 2018, a landslide occurred in the area. Seven families were affected, and landslide material blocked the road. This study aims to determine slope conditions through electrical resistivity tomography (ERT) and slope stability analysis using the limit equilibrium method. Based on the interpretation of the ERT profile, it is known that a layer with a resistivity value of <5 Ωm is wet clay; 5-15 Ωm is wet silt; 15-150 Ωm is silt-to-sand; and >150 Ωm is bedrock. The sliding surface is thought to be at the boundary between the wet clay and wet silt layers. The interpretation of the ERT profile is confirmed by data from laboratory tests on soil samples. Slope stability analysis was carried out using ERT profile interpretation and soil sample laboratory test data. The slope stability analysis results show that both the slopes that experienced landslides in 2018 and those that did not experience landslides were stable when the water table was 3 meters deep. However, the landslide slopes are in critical condition as the groundwater level rises, while the non-landslide slopes are remains stable.

Keywords

Electrical Resistivity Tomography; Landslide; Limit Equilibrium Method; Slope Stability

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References

Anh Bui, T., Fathani, T. F., & Wilopo, W. (2019). Landslide Risk Assessment for Designing Monitoring and EarlyWarning System. Journal of Applied Geology, 4(1), 1. https://doi.org/10.22146/jag.48735

Asriza, Supriyanto, Kristyanto, T. H. W., Indra, T. L., Syahputra, R., & Tempessy, A. S. (2017). Determination of the Landslide Slip Surface Using Electrical Resistivity Tomography (ERT) Technique. In Advancing Culture of Living with Landslides (pp. 53–60). Springer International Publishing. https://doi.org/10.1007/978-3-319-53498-5_7

Badan Pusat Statistik Kabupaten Progo Kulon. (2019). KABUPATEN KULON PROGO DALAM ANGKA Kulon Progo Regency in Figures 2019. https://kulonprogokab.bps.go.id/publication/2019/08/16/94767e3c2489a016ad849416/kabupaten-kulon-progo-dalam-angka-2019.html

Bowles, J. E. (1979). Physical and Geotechncial Properties of Soil. McGraw-Hill.

BPBD Kab. Kulon Progo. (2022). KAJIAN RISIKO BENCANA KABUPATEN KULON PROGO TAHUN 2022-2026. https://bpbd.kulonprogokab.go.id/detil/729/dokumen-kajian-risiko-bencana-kulon-progo

Cheng, Y. M., & Lau, C. K. (2014). Slope stability analysis and stabilization : new methods and insight (2nd ed.). CRC Press Taylor & Francis Group.

Chibani, A., Hebbache, K., Mellas, M., & Mabrouki, A. (2023). 2D electrical resistivity tomography (ERT) investigation of a landslide: A case study from Ali Mendjeli, Constantine, North-East of Algeria. NRIAG Journal of Astronomy and Geophysics, 12(1), 45–57. https://doi.org/10.1080/20909977.2022.2163787

Crawford, M. M., Bryson, L. S., Woolery, E. W., & Wang, Z. (2018). Using 2-D electrical resistivity imaging for joint geophysical and geotechnical characterization of shallow landslides. Journal of Applied Geophysics, 157, 37–46. https://doi.org/10.1016/j.jappgeo.2018.06.009

Husein, S., & Srijono. (2010). Peta Geomorfologi Daerah Istimewa Yogyakarta. Simposium Geologi Yogyakarta. https://doi.org/DOI: 10.13140/RG.2.2.10627.50726

Imani, P., Tian, G., Hadiloo, S., & El-Raouf, A. A. (2021). Application of combined electrical resistivity tomography (ERT) and seismic refraction tomography (SRT) methods to investigate Xiaoshan District landslide site: Hangzhou, China. Journal of Applied Geophysics, 184. https://doi.org/10.1016/j.jappgeo.2020.104236

Jianjun, G., Zhang, Y. X., & Xiao, L. (2020). An application of the high-density electrical resistivity method for detecting slide zones in deep-seated landslides in limestone areas. Journal of Applied Geophysics, 177. https://doi.org/10.1016/j.jappgeo.2020.104013

Kamiński, M., Zientara, P., & Krawczyk, M. (2023). Application of airborne laser scanning and electrical resistivity tomography in the study of an active landslide and geology of the cliff, Jastrzębia Góra, Poland. Bulletin of Engineering Geology and the Environment, 82(4). https://doi.org/10.1007/s10064-023-03153-z

Mugagga, F., Kakembo, V., & Buyinza, M. (2012). A characterisation of the physical properties of soil and the implications for landslide occurrence on the slopes of Mount Elgon, Eastern Uganda. Natural Hazards, 60(3), 1113–1131. https://doi.org/10.1007/s11069-011-9896-3

Pasierb, B., Grodecki, M., & Gwóźdź, R. (2019). Geophysical and geotechnical approach to a landslide stability assessment: a case study. Acta Geophysica, 67(6), 1823–1834. https://doi.org/10.1007/s11600-019-00338-7

Perrone, A., Lapenna, V., & Piscitelli, S. (2014). Electrical resistivity tomography technique for landslide investigation: A review. In Earth-Science Reviews (Vol. 135, pp. 65–82). Elsevier. https://doi.org/10.1016/j.earscirev.2014.04.002

Rahardjo, W., Sukandarrumidi, & Rosidi, H. M. D. (1977). Peta Geologi Lembar Yogyakarta, Jawa. Direktorat Geologi.

Telford W.M, Geldart L.P, & Sheriff R.E. (1990). Applied Geophysics (2nd ed.). Cambridge University Press. . https://doi.org/https://doi.org/10.1017/CBO9781139167932

Usman, F. C. A., Manyoe, I. N., Duwingik, R. F., & Kasim, D. N. P. (2020). Geophysical survey of landslide movement and mechanism in Gorontalo Outer Ring Road, Gorontalo. IOP Conference Series: Earth and Environmental Science, 589(1). https://doi.org/10.1088/1755-1315/589/1/012008

Wang, Y., Li, Y., & Chen, J. (2023). Comprehensive Analysis Method of Slope Stability Based on the Limit Equilibrium and Finite Element Methods and Its Application. Open Journal of Civil Engineering, 13(04), 555–571. https://doi.org/10.4236/ojce.2023.134040

Wilopo, W., Setiawan, H., Prakasa Eka Putra, D., & Faisal Fathani, T. (2020). Identification of Sliding Surface and Crack Pattern in the Soil Creep, Case Study: Unika Soegijapranata Campus, Semarang, Central Java, Indonesia. Understanding and Reducing Landslide Disaster Risk , 4, 451–457. https://doi.org/https://doi.org/10.1007/978-3-030-60706-7_48

DOI: https://doi.org/10.22146/jag.97467