Influence of parameters on the development of landslides in the Estrada de Ferro Vitória-Minas slopes

Denise De Fátima Santos Da Silva,Allan Erlikhman Medeiros Santos,Elaine Aparecida Santos Da Silva,Rosyelle Cristina Corteletti

doi:10.33448/rsd-v10i10.19300

Abstract

Landslides have been the object of extensive studies in the world, not only for their importance as active agents of modifications of relief forms, but also because can damages and losses to people and exposed structures, affecting various kinds of enterprises. This study had as objective the determination of influencing parameters on the development of landslides in the slopes aside of Estrada de Ferro Vitória-Minas (EFVM). EFVM is located in the southeastern region in Brazil and is an important railroad for the transportation of iron ore to the steel mills and for exportation, as well as for passenger transportation. The database used herein was collected from field work in EFVM, together with image processing and data in laboratory tests. The parameters selected to be evaluated were Atterberg limits, cohesion, friction angle, permeability and classification of soil in the slopes. Estimates were done on the volumes and areas of landslides that have already occurred in the slopes. Among the studied parameters, the results obtained for the Atteberg limits and soil cohesion were the most relevantly correlated with the field results, which is in accordance with other studies from literature. It is concluded that Atterberg limits are directly related to soil ruptures, and soil cohesion contributes to soil stabilization in slopes.

Highlights

Natural disasters associated with mass movements on slopes occur in a wide range of frequencies in various parts of the world
The present research allowed the investigation of the influencing variables on the development of landslide scars in the Estrada de Ferro Vitória-Minas in Brazil, through the application of multivariate statistical principal component analysis
It was possible to observe that the total cohesion values contribute negatively to the development of the scars

Summary

Introduction

Natural disasters associated with mass movements on slopes occur in a wide range of frequencies in various parts of the world In linear infrastructures such as railways, for example, studies about landslide characteristics assume relevance due to the essential nature of the project, which consists of a long trajectory crossing different regional landscapes with its distinct geological, geotechnical, topographies, and vegetation characteristics. In this context, several works were developed (Junior & Cabral, 2019; Pedrosa et al, 2020; Santos et al, 2020; Silva & Santos, 2020) in order to assist in decision making regarding the management and prioritization of works, in the railway network, and in highways, housing complexes and in mining areas. There are different scopes for the previous studies related to slope landslides, with different objectives, for example, relationship propositions either to predict landslide volumes on slopes (Silva et al, 2018; Guzzetti et al, 2009; Guo et al, 2014; Lee & Chi, 2011; Silva et al, 2021); classifications of landslide types (Varnes, 1978; IAEG, 1990), or identification of the events that trigger landslide development (Terzaghi, 1950)

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Conclusion