Perfil geológico-geotécnico do subsolo ao longo do traçado do metrô de Goiânia / Geological-geotechnical profile of the subsoil along the Goiânia suway alignment

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

The building of the Goiânia subway is one of the items in the Proposal for Life Quality Improvement and Social Inclusion of the population of the Metropolitan Region of Goiânia (MRG), involving the municipal administrations of Goiânia and Aparecida de Goiânia. The proposal, which is part of the rearrangement of the MRG public transport system and follows the Goiânia and Aparecida de Goiânia urban master plans, foresees the implantation of a north-south transportation corridor including subway lines with surface and underground stretches. The final product of this dissertation is the geological-geotechnical profile of the subsoil in the Goiânia subway future axis, resulting from the study of the field and laboratory geological-geotechnical investigations performed along the line during the basic design stage. A bibliographical review brought to light the building methods used in subterranean excavations most indicated for the underground stretches, according to the drilling data and subsoil characteristics in those sections. Eight water level meters along the corridor were monitored for seasonal variations throughout two consecutive cycles to produce this dissertation. The results were compared with their respective rainfall data. This analysis then helped define the excavation work to be done when building the underground stretches. With a view to modeling the soil penetration strength data (NSPT), the Target-6.4 version computer program, normally used in mining activities, but never before applied to geotechnical work, was used. Results obtained from monitoring the behavior of the water table as well as from the analysis of the geological-geotechnical conditions of the subsoil helped determine the choice of building procedures best indicated for specification in the executive design stage of the various stretches of the Goiânia subway.

ASSUNTO(S)

metrô de goiânia investigações geotécnicas perfil geológico geotécnico escavações subterrâneas engenharia civil

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