Affiliation:
1. Universidade do Estado do Rio de Janeiro, Brasil
2. Instituto Chico Mendes de Conservação da Biodiversidade, Brasil
Abstract
Abstract Tijuca National Park (Parque Nacional da Tijuca - PNT), in the Carioca Hills, Rio de Janeiro, faces often landslides. This threatens the environment and the infrastructure, such as Estrada do Redentor, which connects the Paineiras Visitor Center (CVP) to the Floresta Visitor Center Sector. Due to the lithological-structure characteristics and the status of urban protection area, many methodologies are not suitable for risk mapping and management. Therefore, a methodological adjustment was developed to identify landslide-prone areas by quantifying, understanding, and spatializing events and conditioning factors. Using GIS tools, we collected data on geological structures and infrastructure to assess risk. As a result, a concentration of high-risk areas was identified near the CVP. Medium risk areas are centralized, while from the middle of the road to Alto da Boa Vista, the predominant areas range from low to medium risk. The most common factors are cracks in the road, loose blocks on the slopes, and cuts in the road. Therefore, on Redeemer Road, there is a combination of factors affecting safety, such as lithological-structure and geomorphological aspects, rainfall, slope and lack of maintenance of existing structures.
Subject
Urban Studies,Architecture,Geography, Planning and Development
Reference32 articles.
1. The system of continental rifts bordering the Santos Basin, Brazil;Almeida F. F. M. de;Anais Academia Brasileira de Ciências,1976
2. Precipitation extremes over La Plata Basin – Review and new results from observations and climate simulations;Cavalcanti I. F. A.;Journal of Hydrology,2015
3. Os Processos Erosivos nas Encostas do Maciço da Tijuca, RJ: Parte 1;Coelho Netto A. L.,1979
4. Impactos Ambientais das Chuvas de 1996 Sobre o Parque Nacional da Tijuca: diagnóstico e mapeamento da erosão nas encostas e estradas; riscos subsequentes e ações emergenciais.;Coelho Netto A. L.,1996
5. Carta de declividade de vertentes: confecção e utilização.;De Biasi M.;Geomorfologia,1970