Geomatics Applications in Natural Hazard Management: Mass Movements on Route 115 CH, Paso Pehuenche, Maule Region

Authors

  • César Becerra Ministerio de Obras Públicas, Dirección de Planeamiento
  • Jacqueline De Rurange Universidad Católica del Maule, Facultad de Ciencias de La Ingeniería
  • Mario Guiachetti Ministerio de Obras Públicas, Dirección de Vialidad

Keywords:

Mass Movements, Geomatics, Natural Hazard Management

Abstract

Studies were conducted based on the application of geomatic technologies for the evaluation and management of natural hazards related to mass movements on mountain routes, specifically on Route 115 CH, Paso Pehuenche, Maule Region. The first study developed a qualitative-quantitative model to determine the level of susceptibility for a section of Route 115 CH. This model was applied based on terrain analysis and the use of geomatics. Fieldwork, digital elevation models (DEM), satellite images, and aerial photographs were analyzed. The results indicate high susceptibility to landslides, debris flows, and rockfalls due to geomorphological conditions, highly weathered rocks, steep slopes, low vegetation cover, and anthropogenic topography, which are optimal factors for the generation of these geodynamic processes.The second study is a multi-temporal analysis of mass movements of the rotational landslide type, located at km 135 of Route 115 CH, to determine the evolution and monitoring of this geodynamic process. It was based on the comparison of Digital Elevation Models (DEMs) processed from LIDAR (Light Detection and Ranging) flights and UAVs (Unmanned Aerial Vehicles), as well as the use of geomatics and fieldwork. The results indicate surface movements of landslides greater than one meter over a period of 20 months, due to optimal conditions for the generation of these movements such as highly saturated soils, steep slopes, and anthropogenic topography. Geomatics applications provide prevention tools, constituting an instrument for environmental and territorial management analysis for mountain routes.

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Published

2024-12-23 — Updated on 2025-07-30

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How to Cite

Becerra, C., De Rurange, J., & Guiachetti, M. (2025). Geomatics Applications in Natural Hazard Management: Mass Movements on Route 115 CH, Paso Pehuenche, Maule Region. Journal of Construction and Civil Engineering, 12(3), 1–10. Retrieved from https://rioc.ufro.cl/index.php/rioc/article/view/3367 (Original work published December 23, 2024)

Issue

Vol. 12 No. 3 (2024): RIOC

Section

Articles

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Copyright (c) 2024 César Becerra, Mario Guiachetti, Jacqueline De Rurange

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