Landslide Risk Mapping along Rantepao – Palopo Road Section, South Sulawesi Province

https://doi.org/10.22146/jcef.24008

Dian Pratiwi Anggeraini(1*)

(1) National Road Implementation Office VI, Ministry of Public Works, Makassar, Indonesia
(*) Corresponding Author

Abstract


Rantepao – Palopo Road Section is 61 km long, which provides a connection between Palopo City and North Toraja District. Geographically, the road is winding, located in a hilly area with steep canyon. This condition makes the road vulnerable to soil movement or landslide. On 8 November 2009, a landslide, which caused a huge material and immaterial loss, took place. The scale of the disaster was so large that it was classified as a national disaster. In the landslide disaster management, the mitigation and preparedness effort will be more focused if complemented with spatial data in the form of landslide hazard map in Rantepao – Palopo road section. This research uses Public Works Minister Regulation No.22/PRT/M/2007 concerning landslide hazard area spatial planning as the reference which is modified and assisted with the application of Geographical Information System (GIS). Based on the hydro-morphology condition, the research location can be classified into three, namely typology A (> 1000 mdpl), typology B (500 – 1000 mdpl), and typology C (<500 mdpl). Each typology consists of natural physical aspects with slope indicator, soil type, geology, rainfall, distance from the river/slope water system, distance from seismic fault and vegetation. Human activity aspects comprise planting pattern indicator, slope cutting, pond, population density, and mitigation effort. Based on the regulation, several indicators are difficult to apply in the road section study. Therefore, in this research, some modifications are made to several indicators. In the slope cutting indicator, to obtain slope cutting map, overlay process on topography map, slope variation map, and road section map was performed. The distance from the river/slope water system was obtained by calculating the distance from the river to the road, the closer the river to the road, the bigger the vulnerability. Meanwhile, the distance from the fault was evaluated based on the existence of seismic faults in the research location. Landslide hazard map was obtained by applying overlay process to natural physical aspects map and human activity map. To obtain a hazard map for Rantepao – Palopo road section, a modification by applying overlay to road section map and landslide hazard map was performed. Hazard map on Ranteo-Palopo is divided into three types, i.e. low risk, medium risk, and high risk.

Keywords


Landslide; hazard risk map; Rantepao–Palopo road; disaster mitigation.

Full Text:

PDF


References

Barus, B. & Wiradisastra, U., 2000. Sistem Informasi Geografi, Laboratorium Penginderaan Jauh dan Kartografi, Bogor: Faculty of Agriculture, Bogor Agriculture Institute.

Danoedoro, P., 2004. Pengolahan citra Digital, Teori dan Aplikasinya Dalam Bidang Penginderaan Jauh [Digital Processing Image, Theory, and Application in Remote Sensing], Yogyakarta: Faculty of Geography.

Danoedoro, P., 2008. Matrikulasi GIS dan Remote Sensing [Matriculation of GIS and remote Sensing], Yogyakarta: MTPBA Universitas Gadjah Mada.

Directorate General of Bina Marga, 2009. Laporan Longsoran Jalan Nasional Rantepao – Palopo, Provinsi Sulawesi Selatan [Lanslide Hazard Report on National Road Rantepao - Palopo, South Sulawesi Province]. Directorate General of Bina Marga.

Karnawati, D., 2005. Bencana Alam Gerakan Massa Tanah di Indonesia dan Upaya Penanggulangannya [Natural Hazard due to Mass Movementin Indonesia and the Countermeasures]. Yogyakarta: Department of Geology Engineering, Universitas Gadjah Mada.

Ministry of Agriculture, 1980. Letter of Decree No. 837/KPTS/UM/11/1980 on Criteria and Determination of Protected and Production Forest. Ministry of Agriculture.

Ministry of Public Works, 2007. Law of Ministry of Public Works No. 22/PRT/M/2007 on Guidelines of Spatial Management in Lanslide Prone Area s.l.: Ministry of Public Works.



DOI: https://doi.org/10.22146/jcef.24008

Article Metrics

Abstract views : 1797 | views : 2037

Refbacks

  • There are currently no refbacks.




Copyright (c) 2022 The Author(s)


The content of this website is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
ISSN 5249-5925 (online) | ISSN 2581-1037 (print)
Jl. Grafika No.2 Kampus UGM, Yogyakarta 55281
Email : jcef.ft@ugm.ac.id
Web Analytics JCEF Stats