Three-dimensional stability analysis of an urban slope located in João Monlevade, Brazil

Authors

  • Fernanda Cristina Pereira Universidade do Estado de Minas Gerais
  • Flavia Laís Dias Oliveira Universidade do Estado de Minas Gerais
  • Laís Emily de Assis Universidade Federal de Viçosa
  • Tatiana Barreto dos Santos Universidade Federal de Ouro Preto

DOI:

https://doi.org/10.33448/rsd-v8i11.1449

Keywords:

Slope stability; Three-dimensional analysis; Generalized limit equilibrium method; Urban slopes.

Abstract

Geotechnical stability analysis of slopes is an important tool for decision making in civil projects.  Use of three-dimensional software for analysis of soil slope stability has increased in recent years. Rocscience Inc. created Slide3 software in 2017. Slide3 is a software that allows geotechnical engineers to calculate the factor of safety of complex 3D slope stability geometries that 2D models cannot fully simulate. In this context, this paper presents a three-dimensional stability analysis of a slope located in an urban area at city of João Monlevade, Minas Gerais, Brazil. The slope was selected due to the instability history in rainfall periods. Topography of the area was provided by the city council. Young and mature residual soils were identified in the studied slope. Young residual soil was physically classified as clay without gravels and presents in natura values of cohesion and friction angle, equal to 32 KPa and 23.97º, respectively. Mature residual soil was physically classified as clayey silt without gravels and presents in natura values of cohesion and friction angle, equal to 19 KPa and 23.30º, respectively. The factor of safety of the soil slope was equal 0.977, considering the slope saturated. The factor of safety of the drained slope was equal to 1.415. Generalized limit equilibrium (GLE) method was used in this equilibrium-limit analysis.  The results stability analysis of the slope was coherent, once previous instability occurs in a period that was identified above average rainfall.

References

American Society for Testing and Materials (2004). Standard Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions, D3080. Pennsylvania.

Associação Brasileira de Normas Técnicas (1986). NBR 6457: Amostras de solo: Preparação para ensaios de compactação e ensaios de caracterização. Rio de Janeiro.

Associação Brasileira de Normas Técnicas (1984). NBR 6459: Determinação do Limite de Liquidez. Rio de Janeiro.

Associação Brasileira de Normas Técnicas (1984). NBR 6508: Grãos de solo que passam na peneira de 4,8 mm: Determinação da massa específica. Rio de Janeiro.

Associação Brasileira de Normas Técnicas (1984). NBR 7180: Determinação do Limite de Plasticidade. Rio de Janeiro.

Associação Brasileira de Normas Técnicas (1984). NBR 7181: Solo – Análise Granulométrica - Procedimento. Rio de Janeiro.

Associação Brasileira de Normas Técnicas (1986). NBR 9604: Abertura de poço e trincheira de inspeção em solo, com retirada de amostras deformadas e indeformadas – Procedimento. Rio de Janeiro.

Associação Brasileira de Normas Técnicas (2009). NBR 11682: Estabilidade de taludes. Rio de Janeiro.

Caputo, A. N.; Caputo, H. P. (2015). Mecânica dos Solos e Suas Aplicações. Rio de Janeiro: LTC.

Companhia de Pesquisa de Recursos Minerais (2012). Carta de suscetibilidade a movimentos gravitacionais de massa e inundação: município de João Monlevade - MG. Acess in 25 July 2019, in http://rigeo.cprm.gov.br/xmlui/handle/doc/14934.

Instituto Brasileiro de Geografia e Estatística (2010). Resultados do censo 2010. Access in 20 November 2018, in http://www.ibge.gov.br.

Massad, F. (2003). Obras de Terra: Curso básico de Geotecnia. São Paulo: Oficina de Textos.

Rocscience (2019). Slide3 software. Access in 20 January 2019, in: https://www.rocscience.com/software/slide3.

Downloads

Published

24/08/2019

How to Cite

PEREIRA, F. C.; OLIVEIRA, F. L. D.; ASSIS, L. E. de; SANTOS, T. B. dos. Three-dimensional stability analysis of an urban slope located in João Monlevade, Brazil. Research, Society and Development, [S. l.], v. 8, n. 11, p. e168111449, 2019. DOI: 10.33448/rsd-v8i11.1449. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/1449. Acesso em: 23 dec. 2024.

Issue

Vol. 8 No. 11

Section

Engineerings

License

Authors who publish with this journal agree to the following terms:

1) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

2) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

3) Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.