Rock Slope Stability
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Indicator kriging applied to RMR geomechanical modelling in a Pb-Zn deposit case study
Abstract The opening of a mining enterprise requires knowledge of the geomechanical characteristics of the mineral deposit, which will be worked according to the use of parameters of stability and/or resistance of the material, as well as the discontinuities present in the rock. In this study, the Rock Mass Rating methodology was used to propose a geomechani
REM, Int. Eng. J.. Publicado em: 2021-06
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2. Assessment of the effects of vegetational cover on the long-term stabilityof a waste rock dump
Abstract Waste rock dump reclamation includes re-grading the banks to flatten the overall slope followed by re-vegetation. These measures are required to reduce surface erosion, provide physical stability, and meet future use goals. In some cases, the presence of trees can cause localized shear zones in a waste rock dump by the load of the tree mass and the
REM, Int. Eng. J.. Publicado em: 16/09/2019
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3. Landslides Zonation Hazard: relation between geological structures and landslides occurrence in hilly tropical regions of Brazil
ABSTRACT This paper presents a new approach of landslides zonation hazard studies, based on an integrated study of structural data along with geomorphological and external factors, in a hilly regions of Brazil, covered by a tropical humid rain-forest, called Serra do Mar. The Serra do Mar consists of a hilly region along the east coast of Brazil, with high s
An. Acad. Bras. Ciênc.. Publicado em: 31/08/2017
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4. ANÁLISE TENSÃO DEFORMAÇÃO E POR EQUILÍBRIO LIMITE DO MECANISMO DE TOMBAMENTO FLEXURAL
The search for maximizing mineral exploitation, associated to the safety measures needed in order to make this activity viable, force us to seek new forms of analysis to achieve these guidelines in an optimum way. The purpose of this work is to contribute to a better explanation of the breakdown of phyllite slopes by flexural toppling in the region of the Qu
Publicado em: 2008
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5. PROBABILISTIC ANALYSIS OF SLOPE STABILITY CONSIDERING SPATIAL VARIABILITY OF SOIL / ANÁLISES PROBABILÍSTICAS DA ESTABILIDADE DE TALUDES CONSIDERANDO A VARIABILIDADE ESPACIAL DO SOLO
Freqüentemente as análises de estabilidade de taludes são feitas por métodos determinísticos, nos quais é obtido um Fator de Segurança (FS). Estes métodos não quantificam as incertezas existentes nas variáveis de entrada (parâmetros de resistência) na análise. Tampouco mostram detalhes sobre qual variável afeta mais o resultado. Os métodos pro
Publicado em: 2008
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6. APLICATIONS OF PROBABILITY AND STATISTICS IN GEOTECHNICAL ANALYSES / APLICAÇÕES DE PROBABILIDADE E ESTATÍSTICA EM ANÁLISES GEOTÉCNICAS
In geotechnical analyses, forecasts of safety factors or deformations are developed on the basis of deterministics methods, that admit as fixed and known the parameters of the soil or the rock. However, such forecasts are affected by uncertainties proceeding from the reproduction impossibility of the field conditions in laboratory, of the disturbance of the
Publicado em: 2008
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7. ANÁLISE NUMÉRICA DO COMPORTAMENTO DE UM OLEODUTO SUJEITO A MOVIMENTOS DE ENCOSTA / NUMERICAL ANALISYS OF THE BEHAVIOR OF A PIPELINE SUBJECT TO MASS MOVEMENT
Movimentos de terra em encostas frequentemente causam grandes prejuízos econômicos, ambientais, sociais e, com freqüência, perda de vidas humanas. O mecanismo que desencadeia o processo de movimentação geralmente ocorre em períodos de chuvas intensas, principalmente nas encostas com pouca cobertura vegetal ou naquelas que sofreram mudanças recentes n
Publicado em: 2008
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8. MODELAGEM GEOMECÂNICA TRIDIMENSIONAL DE MACIÇOS ROCHOSOS PARA ANÁLISE BIDIMENSIONAL DA ESTABILIDADE DOS TALUDES DE ESCAVAÇÃO DA CASA DE FORÇA DO AHE-SIMPLÍCIO / 3D ROCK MASS GEOMECHANICAL MODELING TO EXCAVATED SLOPE BI-DIMENSIONAL STABILITY ANALYSIS AT AHE-SIMPLÍCIO POWER HOUSE
Na engenharia geotécnica, o conhecimento das propriedades geomecânicas de subsuperfície é fundamental aos cálculos de estabilidade. Na prática cotidiana, a estimativa dessa distribuição é realizada pelo geólogo/geotécnico responsável, que traça seções geológico- geotécnicas em função de sua experiência e da observação dos dados das inve
Publicado em: 2008
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9. Analise de estabilidade do maciço rochoso da Mineração Casa de Pedra, Congonhas, Minas Gerais / Slope stability analysis of the Mineração Casa de Pedra, Congonhas, MG, Brasil rock mass
This work presents the study of the rock mass stability at the Mineração Casa de Pedra , Minas Gerais, using kinematic analisys and maps in 1:4000 scale. The geological structures, the friction angle and cohesion of the rock mass were evaluated through a geological geotecnical mapping technique. Data collected from each bench of the mine were relateded wit
Publicado em: 2007
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10. Análise de estabilidade de taludes em solos de alteração de rochas metamórficas do Quadrilátero Ferrífero / Slope stability analysis in soils of alteration of metamorfic rocks of Quadrilátero Ferrífero
The present work has the aim of improve the knowledge on the mechanical behavior of several materials occurring in the slopes of the Pico mine, in Quadrilátero Ferrífero area, Minas Gerais State. Triaxiais tests and direct shear tests of undisturbed samples collected in situ were performed in order to obtain strength parameters under several loading condit
Publicado em: 2006
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11. THERMODYNAMIC NONEXTENSIVITY, DISCRETE SCALE INVARIANCE AND ELASTOPLASTICITY: A STUDY OF A SELF-ORGANIZED CRITICAL GEOMECHANICAL NUMERICAL MODEL / NÃO-EXTENSIVIDADE TERMODINÂMICA, INVARIÂNCIA DISCRETA DE ESCALA E ELASTO-PLASTICIDADE: ESTUDO NUMÉRICO DE UM MODELO GEOMECÂNICO AUTO-ORGANIZADO CRITICAMENTE
This thesis aims at applying new concepts from solid state physics and statistical mechanics - chaos theory and fractal geometry - to the study of nonlinear dynamic systems. More precisely, it deals with a two-dimensional continuum elastoplastic Mohr-Coulomb model, commonly used to simulate pressure-sensitive materials (e.g., soils, rocks and concrete) subje
Publicado em: 2003
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12. ANALYSIS OF THE DISPLACEMENT FIELD IN THE STABILITY OF HIGH-RISE MINING SLOPES / ANÁLISIS DEL CAMPO DE DESLOCAMIENTOS PARA ESTABILIDAD DE TALUD DE GRANDE ALTURA EN MINERACIÓN / ANÁLISE DO CAMPO DE DESLOCAMENTOS PARA ESTABILIDADE DE TALUDES DE GRANDE ALTURA EM MINERAÇÃO
The evaluation of the stability of the Robert Pit Mine (Canada) is made through the field of displacements of superficial and ground marks and possible rupture mechanisms obtained from the results of tension-deformation analysis by using the program computational FLAC (V. 3.30). Two constitutive models, the elastic perfectly plastic model and elastic-plastic
Publicado em: 1999