The Impact of Cracked Soil and Weathering on Slope Stability Against Landslides in Hilly Regions with Heavy Rainfall

Main Article Content

Putu tantri Kumala sari
Mila K. Wardani

Abstract

Landslides are frequent events occurring in hilly regions of Pacitan-Indonesia, specifically beneath High Voltage Air Line (SUTT) tower. These events occur during the rainy season, with a monthly and daily intensity of 1,000 mm and 300 mm, respectively. Therefore, this study aims to identify the causes of landslides in hilly regions with good soil conditions influenced by weathering and cracks. The field observations of geotechnical and geophysical were carried out including Electrical Resistivity Tomography (ERT) and Induced Polarization (IP). The results of geotechnical testing showed that soil conditions were generally stiff, while ERT and IP tests indicated a layer with weathering and cracks. Numerical modeling was also performed using limit equilibrium and finite element methods to simulate the impact of soil weathering and cracks. The results showed that the presence of cracks and weathering in soil at landslide location could significantly reduce slope stability, particularly during heavy rainfall. Additionally, the number of cracks and seepage parameter values in weathered soil influenced slope stability, potentially leading to landslides.

Downloads

Download data is not yet available.

Article Details

How to Cite
Kumala sari, P. tantri, & Wardani, M. K. (2024). The Impact of Cracked Soil and Weathering on Slope Stability Against Landslides in Hilly Regions with Heavy Rainfall. Potensi: Jurnal Sipil Politeknik, 26(2), 53–58. https://doi.org/10.35313/potensi.v26i2.6359
Section
Articles

References

A. Rahimi, H. Rahardjo, and E.-C. Leong, “Effect of antecedent rainfall patterns on rainfall ‑ induced slope failure Effect of Antecedent Rainfall Patterns on Rainfall- Induced Slope Failure,†ASCE J. Geotech. Eng. Div., vol. 137, 2011.

D. Lin, S. Hung, C. Ku, and H. Chan, “Evaluating the Efficiency of Subsurface Drainages for Li-Shan Landslide in Taiwan,†Nat. Hazards Earth Syst. Sci. Discuss, vol. 1, no. January, pp. 1–22, 2016.

P. T. K. Sari, I. B. Mochtar, and S. Chaiyaput, “Effectiveness of Horizontal Sub ‑ drain for Slope Stability on Crack Soil Using Numerical Model,†Geotech. Geol. Eng., vol. 41, no. 8, pp. 4821–4844, 2023.

D. A. Sangrey, W. Harrop, and J. A. Klaiber, “Predicting Groundâ€Water Response to Precipitation,†J. Geotech. Eng., vol. 110, no. 7.

S. U. N. Jianping, L. I. U. Qingquan, L. I. Jiachun, and A. N. Yi, “Effects of rainfall infiltration on deep slope failure,†Sci. China Ser. G Physics, Mech. Astron., vol. 52, no. 2002, 2009.

C. S. Bronnimann, “Effect of Groundwater on Landslide Triggering,†2011.

N. Gofar, L. M. Lee, and M. Asof, “Transient Seepage and Slope Stability Analysis for Rainfall-Induced Landslide: A Case Study,†Malaysian J. Civ. Eng., vol. 18, no. 1, pp. 1–13, 2006.

E. A. Suryo, “Real-time Prediction of Rainfall Induced Instability of Residual Soil Slopes Associated with Deep Cracks,†2013.

S. Seneviratne and N. Nicholls, “Changes in Climate Extremes and their Impacts on the Natural Physical Environment Coordinating,†in Changes in Climate Extremes and their Impacts on the Natural Physical Environment, 2013, pp. 109–230.

H. Li, Y. Lu, C. Zheng, X. Zhang, B. Zhou, and J. Wu, “Seasonal and Inter-Annual Variability of Groundwater and Their Responses to Climate Change and Human Activities in Arid and Desert Areas :,†Water, vol. 12, no. 303, 2020.

M. A. Ghazali, A. G. Rafek, K. Desa, and S. Jamaluddin, “Effectiveness of Geoelectrical Resistivity Surveys for the Detection of a Debris Flow Causative Water Conducting Zone at KM 9 , Gap-Fraser ’ s Hill Road ( FT 148 ), Fraser ’ s Hill , Pahang , Malaysia,†J. Geol. Res., 2013.

S. Alexsander, I. B. Mochtar, and W. Utama, “The Measurements of Water Intrusion through Cracks Propagation Inside Slopes to Explain the Cause of Slope Failure — Case Study of Embankment in the Sanggu- Buntok Airport , Central Kalimantan , Indonesia,†EJGE, pp. 5347–5363, 2017.

Hutagamissufardal, I. B. Mochtar, and N. E. B. Mochtar, “The Effect of Soil Cracks on Cohesion and Internal Friction Angle at Landslide,†J. Appl. Environ. Biol. Sci., vol. 8, no. 3, pp. 1–5, 2018.

D. Amalia, P. N. Bandung, I. B. Mochtar, and N. E. Mochtar, “PENERAPAN KONSEP BARU CRACKED SOILS PADA PENANGULANGAN KELONGSORAN LERENG ( STUDI KASUS : PEMBANGUNAN GEDUNG RESKRIMSUS POLDA KALIMANTAN TIMUR , BALIKPAPAN ),†no. August, 2018.

S. Alexsander, I. B. Mochtar, and W. Utama, “Field validated prediction of latent slope failure based on cracked soil approach,†Lowl. Technol. Int. 2018;, vol. 20, no. June, pp. 245–258, 2019.

P. T. K. Sari and I. B. Mochtar, “Causes of Landslides in Road Embankment with Retaining Wall and Pile Foundation : A Case Study of National Road Project in Porong-Sidoarjo , Indonesia,†Int. J. Adv. Sci. Eng. Inf. Technol., vol. 13, no. 1, pp. 42–48, 2023.

P. T. K. Sari and I. B. Mochtar, “Special Case on Landslide in Balikpapan , Indonesia Viewed from Crack Soil Approach,†2024.

P. T. K.Sari, Y. Lastiasih, I. B.Mochtar, and Soewarno, “The Effect of Changes in Rainfall Patterns due to Climatic Change on the Cutting Slope Stability of Landslides Case in East Java , Indonesia The Effect of Changes in Rainfall Patterns due to Climatic Change on the Cutting Slope Stability of Landslides Cas,†in IOP Conf. Series: Earth and Environmental Science 1276 (2023) 012049 IOP, 2023, pp. 1–9.