Identification of landslide susceptible areas in Tegucigalpa, Honduras. Limitation of the infinite slope model
DOI:
https://doi.org/10.55407/geogaceta102383Keywords:
landslide, PISA-m, infinite slope, colluviums, TegucigalpaAbstract
This study is focused on an area of 260 km2 in the municipality of Tegucigalpa, the capital of Honduras, which is the municipality with the highest number of historical landslides nationwide (39% of the records). The objective of this publication is to validate the applicability of the infinite slope model to identify the most susceptible areas to landslides within the soils present in the study area. For this validation, modeling with the PISA-m program was carried out on 5 active landslides, which available geotechnical properties data, and a sensitivity analysis of the infinite slope formula was performed. It is concluded that the infinity slope model presents an acceptable accuracy to identify the landslides areas of the that present the greatest slopes, but requires expert judgment adjustments to include the sections of the landslides located in terrains with slopes less than 10º.
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