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Flood Disaster Risk Simulation in Urban Areas in Chaclacayo district, Peru
Castillo Osorio, Ever Enrique,Yoo, Hwan Hee 대한공간정보학회 2018 대한공간정보학회지 Vol.26 No.2
Many urban areas are vulnerable to hazards produced by natural disasters specially floods that are currently increasing. For this reason, prevention efforts must focus on reducing disaster risks when they happen. These actions are applied to land areas; therefore the geographic data are valuable to improve them, because they give the spatial location of the elements in the terrain. Likewise, the hydrological simulation models provide a perspective of the possible vulnerable areas impacted by floods. In order to achieve the improvement of flood disaster risk prevention activities, we propose a methodology for the hydrological simulation of flood scenarios using HecRAS tool. In this methodology we define the geometrical conditions of the cartographic data, use Gumbel`s distribution method for the processing of hydrological data, and develop the hydrological simulation process applying geomorphological and fluid mechanics parameters. The results of the hydrological simulation and the cartographic data are stored in a flexible geodatabase designed by us, using standards and protocols based on open source, which allows their collection, processing and dissemination. We apply the proposed methodology to a case study and develop the hydrological modeling for three simulation scenarios, to calculate the flooding urban areas in Chaclacayo district located in Peru.
Multicriteria analysis for evacuaton route in case of disaster
Ever Enrique Castillo Osorio(에베르 엔리케 카스티요 오소리오),Hwanhee Yoo(유환희) 대한공간정보학회 2019 한국지형공간정보학회 학술대회 Vol.2019 No.5
Determining evacuation routes inside buildings is important for search and rescue activities of people who may be trapped when a disaster occurs. This work aims to develop a methodology that uses Building Information Modeling (BIM) geometry data and applies the multicriteria analysis for the prioritization of areas as part of the potential evacuation routes in the building. The information that results from the analysis is used as additional heuristic data in the execution of a variant of the A* pathifinding algorithm. The initial results allow comparing feasible evacuation routes in simulation scenarios and establishing the importance of the application of multicriteria analysis.
Analytic Hierarchy Process for Evacuation Routes Simulation Inside Buildings
Ever Enrique Castillo Osorio(에베르 엔리케 카스티요 오소리오),Hwanhee Yoo(유환희) 대한공간정보학회 2019 한국지형공간정보학회 학술대회 Vol.2019 No.11
In order to determine low vulnerability evacuation routes for the safe transit of people inside buildings, the environment conditions must be analyzed objectively. This paper proposes a method for the simulation of feasible evacuation routes applying the Analytic Hierarchy Process (AHP) to prioritize and establish weights to the factors that influence the conditions of vulnerability of the geometry elements taken from the Building Information Modeling (BIM). The results of AHP are included in a developed variant of the A* pathfinding algorithm to compare feasible evacuation routes under different simulation scenarios that vary according to the prioritization of criteria and the classification of people by physical conditions. This method may represent an important tool for decision-making in activities related to search, rescue and evacuation within buildings when a disaster happens.