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All Journal Rekayasa Sipil Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil
Fathoni, Bulkin
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Evaluasi Faktor-Faktor Penyebab Longsor dan Kesesuaian Mitigasi: Evaluation of Factors Causing Landslides and Suitability of Mitigation Fathoni, Bulkin; Saputra, Erlangga; Gofar, Nurly
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 13 No. 1 (2024): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v13i1.261

Abstract

Management and maintenance of slopes require proper knowledge of slope conditions so that appropriate mitigation measures can be implemented. The activities required for the management of slopes include slope inventory, slope inspection, slope risk level assessment, and risk mitigation measures. The objective of this study was to observe the slope conditions and causes of past slope failures, determine the appropriate mitigation measures, and analyze the suitability of landslide mitigation measures and causes of slope failures. The research locations are road segment No. 36 (Kota Lahat – Simpang Air Dingin), No. 37 (Simpang Air Dingin – Pagar Alam), and No. 38 (Pagar Alam – Tanjung Sakti – batas Bengkulu). The research was initiated by analyzing data collected by the South Sumatra National Road Management Agency (BPJNSS) from 2018 to 2021. The field observation was conducted on ten locations where the slope had been repaired after slope failure events. The suitability of mitigation with the factors that cause landslides was analyzed using the slope management system method suggested by the Ministry of PUPR. The results showed that most slope failures were triggered by high-intensity rain falling on slope surfaces containing high humidity due to previous rainfall. The common types of slope mitigation are reducing the forces that cause movement, increasing the resisting forces by controlling seepage, and the use of anchors.
Evaluasi dan Pemetaan Tingkat Resiko Longsor di Sumatera Selatan Epianti, Puspita; Fathoni, Bulkin; Gofar, Nurly
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 14 No. 2 (2025): Cantilever (in progress)
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v14i2.496

Abstract

South Sumatra Province is situated in the southern part of Sumatra Island. The western part of this province rests on the Bukit Barisan Mountains. National roads in this area pass through steep slopes and valleys, making them prone to landslides. This study aims to evaluate the slope risk on twelve (12) national road segments crossing the Bukit Barisan area. The study was conducted based on data collected by the South Sumatra Province National Road Implementation Center (BBPJNSS) in 2018 - 2022. The risk level is calculated and classified based on the Road Slope Risk Assessment Guidelines provided by the Ministry of PUPR in 2017. The evaluation results showed that the most vulnerable road segments to landslides are Road segments 15-036, 15-37, and 15-38, connecting Lahat, Pagar Alam, Tanjung Sakti, and the border of Bengkulu Province. Meanwhile, the most prominent types of landslides are soil and rock collapse. The highest number of slopes with high and very high risks occurred in 2020; thereafter, the number declined in 2021 and 2022, as the Ministry of Public Works initiated mitigation projects in the area. The landslide risk map created in this study shows that in 2022, areas with a high risk of landslide have been reduced by the systematic mitigation program implemented by PUPR based on the slope inventory carried out since 2018.
Mapping of Risk Levels and Types of Ground Movement in South Sumatra Saputra, Erlangga; Fathoni, Bulkin; Gofar, Nurly
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.11

Abstract

The western part of South Sumatra Province is situated near Bukit Barisan. Therefore, the topography is characterized by hills and mountains. This condition makes the area vulnerable to ground movement. Information on the risk level and type of ground movement is very important for the region's development. This paper presents the mapping of risk level and type of ground movement along the national road system in South Sumatra Province. The map was developed based on slope condition data collected and tabulated in the Slope Management System developed by the Ministry of Public Works based on several parameters. These parameters were processed and analyzed using ArcGIS software. The risk level is classified as low, medium, high, and very high. The type of ground movement is categorized as debris flow, rock fall, slope failure, rock mass failure, embankment failure, rotation failure, and translation failure. The study uses data from 2018 and 2021. Results show that most ground movement on road segments 36, 37, 38, 18, 19, and 21 is slope failure. The map suggests an increase in the number and level of risk of slope failures from 28 in 2018 to 45 in 2021. The map could be used as preliminary information but not as a replacement for slope surveys and investigations.
Co-Authors Epianti, Puspita Nurly Gofar, Nurly Saputra, Erlangga