Author(s): Carlos Enrique Millan Arancibia, Eduardo Abraham Chavarri Velarde

Linked Author(s): Carlos Enrique Millán Arancibia

Keywords: Debris flow; Huayco; RAMMS; PeruSAT; Risk analysis;

Abstract: This paper aims to model the debris flow of great magnitude that was presented on January 16, 2017, for the risk analysis in Los Cóndores catchment, Chaclacayo district, Lima - Peru. The modeling process is performed using the Debris Flow module of the RAMMS model (Rapid Mass Movement Simulation) that allows modeling the debris flows for risk analysis. The main input of the model is the Digital Elevation Model, which was generated from the imagery of the PeruSAT-1 satellite. Calibration of the model was carried out from a filming of a section of the flow taken on the same day of the event. From this modeling, it is possible to reproduce the simulation of five risk scenarios for Los Cóndores catchment that depend on probable maximum rainfall of 24 hours for different return periods. According to the results obtained, the RAMMS model is an appropriate method for debris flow modeling for risk analysis, through which risk scenarios are generated by debris flow for risk management.

DOI: https://doi.org/10.3850/38WC092019-0903

Year: 2019