Eduardo Antonio Gomes Marques

Universidade Federal de Viçosa (UFV) | UFV · Departamento de Engenharia Civil

Stacked tailings have become increasingly popular in recent years as a more environmentally friendly option for tailings disposal. However, the design and assessment of stacked tailings present unique challenges due to their unprecedented heights and the wide range of factors that affect their behavior, including particle types and sizes, environme...

This article presents the incorporation of information and communication technologies on the teaching-learning process of geotechnical engineering to improve the quality of education and provide practical knowledge to civil engineering students. The content of this paper is divided into three main modules, which are: Treatment of laboratory tests r...

The tensile strength of rocks is of great importance in many engineering and geophysical applications. Considered a key parameter in rock mechanics projects, its determination in the laboratory has been discussed for years by many researchers with two approaches: the direct tensile test, considered the ideal and most realistic, has its credibility...

Este livro foi idealizado, pensando em oferecer a estudantes de Geologia, Engenharia Civil, Engenharia de Minas e Engenharia Ambiental e técnicos conceitos básicos sobre a área de Geologia de Engenharia, envolvendo aspectos teóricos e práticos que os autores consideram fundamentais para uma compreensão inicial do tema e de suas aplicações práticas...

Groundwater numerical modeling with MODFLOW • Simulation of pumping scenarios • Application of MODPATH and ZONEBUDGET packages • Results analysis • Study area: Urucuia Aquifer System • Lack of use of support tools and technical criteria in groundwater granting analysis in Brazil • Better management of water resources with the possibility of predict...

Water scarcity is a problem in Brazil's northern semi-arid domain. Montes Claros is the most populated Minas Gerais city in this context, and its socioeconomic problems are related to water consumption and management. Aiming to help assess these problems, this study presents a new hydrogeological characterization. The 3D geological model was develo...

Water scarcity is a problem in Brazil’s northern semi-arid domain. Montes Claros is the most populated Minas Gerais city in this context, and its socio-economic problems are related to water consumption and management. Aiming to help assess these problems, this study presents a new hydrogeological characterization. The 3D geological model was devel...

Water scarcity is a problem in Brazil’s northern semi-arid domain. Montes Claros is the most populated Minas Gerais city in this context, and its socio-economic problems are related to water consumption and management. Aiming to help assess these problems, this study presents a new hydrogeological characterization. The 3D geological model was devel...

The massive annual tonnage of iron ore tailings, plus the more demanding environmental policies after the catastrophic collapses of Fundão Dam in 2015 and Feijão Dam I in 2019, have forced Brazilian mining companies to search for more sustainable and safer alternatives for tailings disposal. The Brazilian mining industry has been studying the dry s...

Os percursos históricos das políticas públicas de abastecimento de água no contexto rural sempre se mostraram incipientes. Enquanto as áreas urbanas convencionais foram contempladas com ações mais sólidas para atender a população, as periferias urbanas e as localidades rurais foram marginalizadas, com iniciativas desenvolvidas de forma fragmentária...

This work presents the results of the characterization of a sound to slightly weathered amphibolite, sampled at Baixada Santista, on the coast of the state of São Paulo, in the southeastern region of Brazil. Initially, petrographic analysis of material sheets were performed. Characterization tests were carried out to determine the physical indexes...

Laboratory tests are essential to provide knowledge on rock matrix properties, to predict field behaviour and to plan and execute improved engineering design. The paper presents the results of several laboratory tests performed on samples of a basic rock from N4 mine, located at Carajás Complex, on sound and cycled (artificially weathered) rock mat...

In regions of tropical climate weathering processes tend to be very active in engineering time in terms of range and effectives, producing alteration mantles that are often deep and well developed when compared to weathering profiles similar rocks developed on temperate climate. In the municipality of Cachoeiro de Itapemirim, Southeastern Brazil th...

Problems related to gravitational mass movements at the margins of watercourses are present in different parts of the world, but in the Amazon, whose hydrological regime has unique characteristics, and whose socioeconomic situation may be considered underdeveloped, such problems come into sharp focus. Rotational landslides and creeps on the ground...

In regions of tropical climate weathering processes tend to be very active in engineering time in terms of range and effectives, producing alteration mantles that are often deep and well developed when compared to weathering profiles similar rocks developed on temperate climate. In the municipality of Cachoeiro de Itapemirim, Southeastern Brazil th...

The disorderly growth of cities and excessive waterproofing are problems in urban centers, with the main consequence of flooding. In this context, hydrodynamic modeling can be an important tool for the determination of floodable areas, allowing the estimation of flood levels for different scenarios of recurrence times. The present work sought to ev...

Laboratory tests are essential to provide knowledge on rock matrix properties, to predict field behaviour and to plan and execute improved engineering design. The paper presents the results of several laboratory tests performed on samples of a basic rock from N4 mine, located at Carajás Complex, on sound and cycled (artificially weathered) rock mat...

This work presents the results of the characterization of a sound to slightly weathered amphibolite, sampled at Baixada Santista, on the coast of the state of São Paulo, in the southeastern region of Brazil. Initially, petrographic analysis of material sheets were performed. Characterization tests were carried out to determine the physical indexes...

Esse estudo teve como objetivo avaliar as condições de estabilidade de três áreas situadas em uma zona de expansão urbana no município de Rio Piracicaba – MG, quando ao movimento de massa. A região apresenta um histórico de instabilizações desta natureza, em especial de escorregamentos translacionais rasos, com superfície de ruptura planar. Para a...

In this work we analyse the effects of climate change on the recharge and the groundwater flow of the Urucuia Aquifer System in western Bahia State, Brazil (UAS‐BA) in the period 2041–2060. We assessed possible changes and impacts on groundwater recharge with four climate models from the sixth phase of the Coupled Model Intercomparison Project Phas...

The present study investigated the susceptibilities to mass movements of slopes in areas classified as having high potential for natural accidents in Viçosa-MG-Brazil. Several stability scenarios were analyzed based on the geological-geotechnical characteristics of the terrain, considering resistance parameters and geometry for a two-dimensional an...

This article aims to present a methodology for building geomechanical models using existing drillhole data and using a free programming language - the R program. The geomechanical models were developed using the Inverse Distance Weighting (IDW) interpolator and using the RQD variable and a simplified RMR classification, as a basis. Models were buil...

One of the critical features required for rock engineering is achieving a reliable estimate of rock masses properties. However, representing the geomechanical properties of rock mass remains a challenge in rock mechanics, and determining these parameters directly is time-consuming, expensive, and the reliability of the results of these tests is som...

O projeto “Sistema integrado de inteligência territorial para gestão dos recursos hídricos superficiais e subterrâneos e desenvolvimento sustentável da agricultura irrigada no Oeste da Bahia” foi desenvolvido no período de 2019 a 2021 sob responsabilidade técnica da Universidade Federal de Viçosa (UFV) e do Instituto de Geociências da UFRJ permitin...

Vertisols presenting kaolinite codominance or prevalence were already reported in several countries worldwide. However, the literature has few studies focused on investigating the influence of this clay mineral in soil geotechnical behavior. This study aimed to carry out the characterization of Vertisols in Bahia State, Brazil, to understand the in...

roundwater recharge rate estimation is crucial to sustainable development of aquifers in intensely pumped regions, such as the Urucuia Aquifer System (UAS). A sedimentary aquifer in Western Bahia, Brazil, that underlies one of the major agricultural areas of the country where there has been major growth of irrigated areas. This study seeks to evalu...

Este artigo apresenta os resultados de um estudo da morfologia de oito perfis de intemperismo desenvolvidos em alguns arenitos sob condições climáticas tropicais na região de Uberaba, no Estado de Minas Gerais, onde é possível observar características geológicas cuja análise contribuem para o ensino e aprendizado por meio de atividades práticas. Tr...

Sedimentation in bodies of water is a worldwide problem that impairs its navigability and utilization, and, in reservoirs, this process reduces their partial or total storage capacity. Using single-beam bathymetric survey techniques, this study evaluates the sedimentation process in a reservoir section at the Federal University of Viçosa (UFV), loc...

Groundwater consumption has become increasingly relevant for urban development. The city of Montes Claros (Minas Gerais, Brazil) is located in the border region of the Brazilian semi-arid polygon and has registered conflicts of water use for decades ago. The study area contains a complex karst system responsible for the heterogeneous permeability o...

The main objective of this study was to evaluate the influence of the degree of weathering on the strength properties and parameters of a kinzigite gneiss. Kinzigites are important to study do to their common occurrence in southeastern Brazil, as in the city of Rio de Janeiro, where many rock slope stability problems—such as rock falls, rockslides...

The main objective of this study was to evaluate the influence of the degree of weathering on the strength properties and parameters of a kinzigite gneiss. Kinzigites are important to study do to their common occurrence in southeastern Brazil, as in the city of Rio de Janeiro, where many rock slope stability problems-such as rock falls, rockslides...

Please cite this article as: Jaques, D.S., Marques, E.A.G., Marcellino, Lá.Corrê., Leão, Má.Fernandes., Coelho, V.d.S.C., Morphological and mineralogical characterization of weathering zones in tropical climates: A basis for understanding the weathering process on granitic rocks in southeastern Brazil, Abstract 13 14 Weathering zones of granitic ro...

A mineralogical, geological and geotechnical characterization of several rock types (phyllite, dolomite, breccia and marl) from an underground mine site aimed, among other things, to identify its mineral composition and to provide parameters to support the understanding of rock mass behavior. For this purpose, it was possible to perform laboratory...

The changes in the composition and structure of the rock matrix caused by weathering lead to great alterations in its mechanical and physical properties. When considering this, geologists and engineers should pay special attention to materials from transition zones, namely, between the soil and rock over the weathering profiles. This research aimed...

The changes in the composition and structure of the rock matrix caused by weathering lead to great alterations in its mechanical and physical properties. When considering this, geologists and engineers should pay special attention to materials from transition zones, namely, between the soil and rock over the weathering profiles. This research aimed...

Ultrasonic longitudinal wave velocity (Vp) and durability are characteristics largely determined in geotechnical evaluations. These properties are useful in the analysis of weathered rocks because they usually have good relationships with physical and mechanical properties of rocks. Additionally, the tests to obtain these parameters are easy to per...

Geomechanical classifications of rock masses are of great interest and importance for the design of civil and mining works, as slopes, open pits, and underground excavations stability are directly related to the mechanical properties of the rock mass classes. Some of the most common geomechanical rock mass classifications currently used are the RMR...

Two of the major classification systems currently used to predict the behavior of rock masses are the RMR (Rock Mass Rating) and the GSI (Geological Strength Index).The RMR was developed with the aim of recommending conceptual engineering solutions, while the purpose of the GSI is to estimate the strength and deformability parameters of rock masses...

The objective of this study is to create a geological-geotechnical risk map of mass movement for an urban perimeter of Rio Piracicaba city, state of Minas Gerais, MG, Brazil, by applying the methodology proposed by the Brazilian Ministry of Cities. Four neighborhoods were evaluated through works conducted in the field and with the aid of a GIS fed...

Soil nailing has proved to be an efficient and cost-effective stabilization technique, consisting in installing passive reinforcement in the soil that provides the material with tensile and shear strengths. The fundamental parameter in analyzing the mechanical behavior of this type of structure is the frictional resistance of the soil-nail interfac...

Weathering profiles in tropical regions usually present great heterogeneity and anisotropy of geological materials. High structural complexity and great bedrock irregularity are added when these profiles are composed of metamorphic rocks. Therefore, geological-geotechnical research initiatives in these regions imply indirect methods associated with...

Weathering comprises an important mechanism controlling the mechanical behavior of Brazilian rocks in civil and mining engineering works. The intense physical and chemical weathering caused by tropical climate imposes severe changes on strength and deformability behavior of rocks and creates a complex weathering profile which must be appropriately...

The geomechanical properties of rock masses must be identified to assess their quality and employability; however, the methodologies may differ depending on the lithotype and analytical purposes. The present study aimed to estimate the not-well-known physical-mechanical properties of three types of carbonate rocks (calcarenite, calcilutite, and mar...

Geotechnical characterization tests are important to understand the mechanical behavior of rocks, but tests can be expensive and difficult, especially lhe ones related to sample preparation. This work presents the tests results for an intrusive basic rock from Tamanduá Mine, Minas Gerais state, Brazil, in order to allow its geomechanical characteri...

Gneiss can be easily found in severa! urban areas of the Zona da Mata region, in the state ofMinas Gerais, southeastern Brazil. Among the various types of gneiss rocks, the gran­ite-gneiss of Andrelândia Group, Juiz de Fora Complex occurs in much ofthis region and is strongly affected by weathering due to the typically tropical climate. The streng...

This study presents attempts to correlate geomechanical properties in order to estimate uniaxial compression strength through simpler tests, such as point load test, Schmidt hammer hardness and velocity of sound waves for some rocks found in a mine in southern Minas Gerais state, Brazil.

Characterization of Fracture Toughness and Propagation on Intrusive Basic Rocks from Tamanduá Mine, Minas Gerais State, Brazil

It is a well-known fact that weathering leads to chemical and physical changes in rocks that significantly affect their properties and geomechanical behavior. Weathering also promotes alterations of the spatial distributions of rocks at the rock mass scale. So, weathering action on rocks generates different geomechanical materials.

Neste Atlas, procurou-se registrar de forma os principais resultados relacionados à demanda e disponibilidade de recursos hídricos subterrâneos e superficiais nas bacias dos rios Grande, Corrente e Carinhanha. A primeira seção apresenta a evolução da cober- tura e uso do solo na região, incluindo a evolução das áreas de agricultura de sequeiro, de...

A elevada anisotropia, atribuída à foliação, e a alta alterabilidade de filitos aliada a um clima tropical úmido, caracterizado pela ação predominante do intemperismo químico, leva à degradação de suas propriedades geotécnicas, como por exemplo, a diminuição da resistência mecânica. Na região do Quadrilátero Ferrífero, importante província mineral...

Os deslizamentos de encostas em áreas urbanas são recorrentes no Brasil, sendo, muitas vezes, responsáveis por vítimas fatais. Por si só, são fenômenos naturais que podem ocorrer em qualquer local de alta declividade. Além disso, é certo dizer que em uma escala de tempo geológica (milhares de anos) todas as encostas sofrerão um deslizamento. Tem-se...

É histórica a problemática causada pelo excesso de chuvas no município de Viçosa, Minas Gerais, Brasil. Em particular, a rua João Franklin Fontes, no bairro de Fátima, apresenta constantes problemas de recalque e deslizamentos de terra nas propriedades da margem esquerda do Córrego da Conceição. Em 2011, o Ministério Público ordenou a desapropriaçã...

O propósito do artigo é apresentar a proposta de elaboração do Plano Municipal de Redução de Riscos (PMRR) a movimentos de massa e inundações no município de Além Paraíba-MG, Brasil. Este instrumento está enquadrado tecnicamente nas Políticas Públicas de Gestão de Riscos e Respostas a Desastres do Governo Federal brasileiro, principalmente no que r...

O entendimento do comportamento de um maciço rochoso requer o conhecimento de seus parâmetros geomecânicos que são obtidos in situ ou através de ensaios laboratoriais. Todavia, a informação adquirida é pontual, a partir de testemunhos de sondagem ou mapeamento de campo. Entender e representar a variabilidade espacial desses parâmetros, através de m...

Sistemas de classificação geomecânica permitem avaliar de forma eficaz o comportamento de um maciço rochoso. Parte desse comportamento deve-se às características intrínsecas da rocha intacta, já que usualmente esta apresenta uma alta coesão interna em relação à rocha alterada. O presente trabalho tem por objetivo apresentar os resultados de alguns...

Ensaios de caracterização geotécnica são importantes para entender o comportamento mecânico das rochas, porém podem ser caros e de difícil realização, em especial a preparação de amostras. Esse trabalho apresenta os resultados de ensaios geotécnicos realizados em uma rocha básica intrusiva da mina do Tamanduá, localizada em Minas Gerais (Brasil), d...

Uma das principais classificações geomecânicas utilizadas actualmente para maciços rochosos é o índice RMR (Rock Mass Rating) desenvolvido por Bieniawski (1974), que fornece uma avaliação geral da qualidade do maciço. Essa avaliação é realizada por meio de uma pontuação dos parâmetros relevantes, que possibilitam estimar, para cinco classes, o temp...

Maciços rochosos são essencialmente compostos por um conjunto de blocos de rochas justapostos e descontinuidades. Estes dois aspectos são primordiais no que diz respeito ao comportamento geomecânico do mesmo. Existem ferramentas interessantes para definir o comportamento e a qualidade do maciço rochoso tais como os sistemas de classificações geomec...

Lake bank filtration (LBF) is an alternative technique of water catchment. LBF has been used by several countries for more than 100 years as pre-treatment for water supply and hydrogeological characterization studies. LBF studies are still recent and essentially focus on water quality with little or no hydrogeological approach. The benefits obtaine...

The study deals with a weathering front in phyllite, coming from the region of Quadrilátero Ferrífero, Minas Gerais. Although abundant in the region, the alteration processes for these rocks are still not well studied. The aim is to contribute to the understanding of weathering, investigating a mineralogical, chemical and physical perspective. Samp...

This paper presents the results of a comprehensive study on the morphology of weathering profiles developed on metamorphic and sedimentary rocks under subtropical climate, focusing on its influence on geotechnical parameters of weathering materials. Several cut and natural slopes were selected for more detailed descriptions of their physical, miner...

This work had the objective to identify the suitability of the Almada River Watershed (ARW) front of the deployment areas for waste disposal from the recognition of physical environment and land use occupation characteristics. The methodology had initially its activities associated with the survey of environmental studies and consolidation of thema...

Study region: The study is based on field data of a shallow phreatic aquifer occurring at a small watershed in Viçosa, Minas Gerais, Brazil. Study focus: The present study aims to evaluate numerical hydrological models generated using different boundary conditions as field data did not allowed a proper definition of the most adequate boundary condi...

Low-grade metamorphic rocks are known for their low mechanical strength and high weatherability. In the Quadrilátero Ferrífero, an important mineral province located in southeastern Brazil, this set of features results in frequent issues with mining and road slope instability, mainly associated with phyllites. Despite the significant iron ore produ...

Inadequate discard of industrial solid waste is a risk to human health and to the environment. Aiming at softening environmental damage caused by deposition on soil of an ink residue, from washing of printers used in carton box packages, it is intended to incorporate this residue into soil-cement bricks. The residue has other use potentialities suc...

Inappropriate waste disposal is prevalent in 60% of Brazilian cities and, in most cases, selection of disposal sites does not follow legal guidelines. In the Zona da Mata region, Minas Gerais State, southeast Brazil, this process is more problematic since physical characteristics results in large Permanent Protection Areas (PPAs). For this, Minas G...

Fatores como aumento da demanda mundial por minério de ferro, decréscimo da qualidade do minério extraído e uma maior consideração sobre os impactos associados à disposição final de rejeitos têm motivado estudos que visam o reaproveitamento dos materiais contidos em barragens de rejeito da mineração de ferro. Neste cenário, o presente trabalho tem...

This manuscript presents the results of some Ménard Pressuremeter tests performed in gneiss residual soils from Southeast Brazil, developed under tropical conditions. These tests are useful to determine stress-strain behavior of soils and, so, can be used on Civil Engineering applications. Amid the parameters that can be determined throughout this...

Weathering profiles have been studied in several parts of the world in an attempt to better understand geotechnical and geomechanical behaviour of the different materials occurring along these profiles, specially transitional materials, formed by different portions of soil and weathered and sound rock. To this behaviour one can also add anisotropy...

Inappropriate solid waste disposal is found in 60% of Brazilian cities and, in most cases, site selection does not follow legal or regulatory restrictions. In the Zona da Mata region, southeast Brazil, this process is still more problematic because of the large permanent protection areas, which results in a low number of available areas for waste t...

A micro-mechanical model is developed to study the fracture propagation process in rocks. The model is represented by an array of bonded particles simulated by the Discrete Sphero-Polyhedra Element Model (DSEM), which was introduced by the authors previously. It allows the modelling of particles of general shape, with no internal porosity. The DSEM...

Current human settlements are characterized by disorganized urbanization and high population densities, which can impact the landscape and the environment. Soil transport leads to erosion and aggradation of water bodies and increases landslide susceptibility in regions with more uneven topographies. Landslides are the most common environmental acci...

The geomechanical classifications are useful tools for characterization of rock masses, especially during conceptual design. Among these classifications, the Geological Strength Index (GSI) methodology stands out for allowing the estimate of mechanical properties for the use of Hoek-Brown and Mohr-Coulomb criteria. The GSI was created by Hoek et al...

This paper presents the results of a study of the morphology of weathering profiles of some basalts and tuffs, located in Mapleton-Maleny Plateau, Queensland, Australia. Several cut slopes located in the region were analyzed in order to provide accurate knowledge of their morphological characteristics. From these, five outcrops were selected for a...

A premissa dessa pesquisa consiste na identificação dos principais fatores que influenciam na ocorrência de movimentos de massa em Rio Piracicaba (Minas Gerais, Brasil), através da identificação dos processos envolvidos, caracterização das propriedades geológico-geotécnicas dos materiais existentes e dos atributos físicos presentes na área em estud...

Este trabalho apresenta os resultados de uma caracterização física e geotécnica de algumas rochas encontradas na região Sul de Minas Gerais, Brasil, região conhecida como Província Pegmatítica de São João Del Rei, através de ensaios de índices físicos, resistência à compressão uniaxial e resistência à carga pontual (point load test ou PLT). Buscou-...

O crescimento populacional desordenado, principalmente nos grandes centros urbanos tornou o serviço de distribuição de água potável uma tarefa desafiadora para o poder público. As fontes de água estão cada vez mais poluídas, o que dificulta e encarece o tratamento da mesma. Diante desse panorama, a filtração em margem é uma técnica simplificada que...

This paper presents the results of a series of physical and mechanical tests carried out on metamorphic rocks of an open pit mine located on south of Iron Quadrangle, Southeast Brazil. The main purpose of these tests was to obtain correlations between uniaxial compressive strength (UCS) and point load strength specifically for some rock types occur...

RESUMO O objetivo desse trabalho foi avaliar a variabilidade espacial de atributos físicos do solo para áreas de Latossolo, Argissolo e Cambissolo ocupadas por pastagens. O conhecimento dessa variabilidade é importante, pois ela influencia a qualidade das pastagens e a recarga de água subterrânea. Foram coletadas 154 amostras georreferenciadas para...

Riverbank filtration (RBF) is a technique that has been successfully used in many countries, as a pre-treatment for water supply purposes, especially in regions under high demand. The technique comprises the construction of well(s) located at river/lake margins, and the water collected in the well is a mixture of surface water and groundwater. Hydr...

O objetivo desse trabalho foi avaliar a erodibilidade de um Cambissolo existente na sub-bacia do Córrego do Yung, localizada em Juiz de Fora, mesorregião da Zona da Mata Mineira. Analisou-se o comportamento dos horizontes pedológicos B e C, e, a partir de ensaios geotécnicos, de caracterização mineralógica e de caracterização física dos materiais,...

Esta pesquisa teve como objetivo a identificação de áreas vulneráveis à contaminação do aquífero freático da Bacia do Rio Almada e área costeira adjacente, Bahia - Brasil. Para tanto, foi realizada a caracterização da área de estudo, com base em dados primários e pré-existentes; bem como da taxa de infiltração e da característica física do solo. O...

This paper presents the results of a study of the morphology of weathering profiles of Bunya Phyllite, located in Western Brisbane, Australia. Several cut slopes located in the suburbs of St. Lucia, Taringa and Indooroopilly were analysed in order to provide accurate knowledge of their morphological characteristics. From these, six outcrops were se...

O mercúrio, elemento químico considerado não essencial a qualquer processo metabólico, é facilmente acumulado na maioria dos organismos. Ocorre naturalmente em formas orgânicas e inorgânicas, nos estados sólido, dissolvido e gasoso. Seu ciclo biogeoquímico envolve processos que ocorrem no solo, na água e na atmosfera. Em 2002, descobriu-se mercúrio...