FECT

Abstract: Landslides are natural disasters that can cause significant damage to human activities, infrastructure, and result in financial losses. This research assessed the landslide risk along the Sarlala road, which connects the capital Dili to the Aileu municipalities, using a GIS-based analytical Hierarchy Process (AHP) for spatial analysis. Data for risk analysis included causative parameters such as climate, topography, geology, hydrography, and land use, alongside a validation map using landslide occurrence points. Landslides along this road are primarily triggered by rainfall, with contributing factors including river channels, road conditions, topography, and lithology. The Landslide Hazard Zonation (LHZ) map classified the area into six hazard categories: null (15%), very low (37%), low (32%), moderate (13%), high (1%), and very high (2%). This assessment is an essential tool for road construction management and provides important insights for planning and mitigating landslide disasters. The study offers valuable guidance for construction planners and decision-makers.
Keywords: Landslide Hazard Zonation (LHZ), GIS-based AHP, Road management, Timor-Leste