GEOTECHNICAL CHARACTERIZATION AND RISK ANALYSIS OF URBAN SLOPE INSTABILITY IN THE CITY OF ARACAJU - BRAZIL

This paper presents a risk analysis of mass movements in 16 slopes in the city of Aracaju, capital of the state of Sergipe, Brazil, using a qualitative method. Geotechnical characterization of soils from of slopes selected for analysis of stability was carried using the OptumG2® software developed b...

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Main Authors: Belaniza Gaspar Santos Neta, Osvaldo de Freitas Neto, Erinaldo Hilario Cavalcante
Format: Article
Language:English
Published: Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte 2020-07-01
Series:Holos
Subjects:
Online Access:http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/10067
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spelling doaj-2f894d0c2c2d4b69812e8d4bced19a022021-06-16T19:00:22ZengInstituto Federal de Educação, Ciência e Tecnologia do Rio Grande do NorteHolos1807-16002020-07-014012710.15628/holos.2020.100672519GEOTECHNICAL CHARACTERIZATION AND RISK ANALYSIS OF URBAN SLOPE INSTABILITY IN THE CITY OF ARACAJU - BRAZILBelaniza Gaspar Santos Neta0Osvaldo de Freitas Neto1Erinaldo Hilario Cavalcante2Universidade de BrasíliaUniversidade Federal do Rio Grande do NorteUniversidade Federal de SergipeThis paper presents a risk analysis of mass movements in 16 slopes in the city of Aracaju, capital of the state of Sergipe, Brazil, using a qualitative method. Geotechnical characterization of soils from of slopes selected for analysis of stability was carried using the OptumG2® software developed by Optum Computational Engineering using the Strength Reduction Method (SRM) to obtain the safety factor. The aim of this study is to conduct a systematic analysis, associating subjective landslide risk studies with rational studies on slope stability analysis. It was found that 50% of the slopes analyzed exhibited a high or very high degree of risk, justifying the landslide risk management policies in the city.  Moreover, stability analyses produced coherent results in terms of slope stability, whereby slopes with high and very high risk were classified as unstable, while the slope deemed to be stable presents medium risk of mass movements.http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/10067risk analysissoil characterizationstability analysis
collection DOAJ
language English
format Article
sources DOAJ
author Belaniza Gaspar Santos Neta
Osvaldo de Freitas Neto
Erinaldo Hilario Cavalcante
spellingShingle Belaniza Gaspar Santos Neta
Osvaldo de Freitas Neto
Erinaldo Hilario Cavalcante
GEOTECHNICAL CHARACTERIZATION AND RISK ANALYSIS OF URBAN SLOPE INSTABILITY IN THE CITY OF ARACAJU - BRAZIL
Holos
risk analysis
soil characterization
stability analysis
author_facet Belaniza Gaspar Santos Neta
Osvaldo de Freitas Neto
Erinaldo Hilario Cavalcante
author_sort Belaniza Gaspar Santos Neta
title GEOTECHNICAL CHARACTERIZATION AND RISK ANALYSIS OF URBAN SLOPE INSTABILITY IN THE CITY OF ARACAJU - BRAZIL
title_short GEOTECHNICAL CHARACTERIZATION AND RISK ANALYSIS OF URBAN SLOPE INSTABILITY IN THE CITY OF ARACAJU - BRAZIL
title_full GEOTECHNICAL CHARACTERIZATION AND RISK ANALYSIS OF URBAN SLOPE INSTABILITY IN THE CITY OF ARACAJU - BRAZIL
title_fullStr GEOTECHNICAL CHARACTERIZATION AND RISK ANALYSIS OF URBAN SLOPE INSTABILITY IN THE CITY OF ARACAJU - BRAZIL
title_full_unstemmed GEOTECHNICAL CHARACTERIZATION AND RISK ANALYSIS OF URBAN SLOPE INSTABILITY IN THE CITY OF ARACAJU - BRAZIL
title_sort geotechnical characterization and risk analysis of urban slope instability in the city of aracaju - brazil
publisher Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte
series Holos
issn 1807-1600
publishDate 2020-07-01
description This paper presents a risk analysis of mass movements in 16 slopes in the city of Aracaju, capital of the state of Sergipe, Brazil, using a qualitative method. Geotechnical characterization of soils from of slopes selected for analysis of stability was carried using the OptumG2® software developed by Optum Computational Engineering using the Strength Reduction Method (SRM) to obtain the safety factor. The aim of this study is to conduct a systematic analysis, associating subjective landslide risk studies with rational studies on slope stability analysis. It was found that 50% of the slopes analyzed exhibited a high or very high degree of risk, justifying the landslide risk management policies in the city.  Moreover, stability analyses produced coherent results in terms of slope stability, whereby slopes with high and very high risk were classified as unstable, while the slope deemed to be stable presents medium risk of mass movements.
topic risk analysis
soil characterization
stability analysis
url http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/10067
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AT osvaldodefreitasneto geotechnicalcharacterizationandriskanalysisofurbanslopeinstabilityinthecityofaracajubrazil
AT erinaldohilariocavalcante geotechnicalcharacterizationandriskanalysisofurbanslopeinstabilityinthecityofaracajubrazil
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