Abstract In rapidly growing urban areas of developing countries, inappropriate urbanization practices near water bodies lead to significant environmental degradation, including deforestation, soil impermeabilization, and direct waste discharge into rivers streams. This not only compromises quality ecosystem health but also exacerbates flood risks for nearby communities. Dumpsites, common in these regions due inadequate management infrastructure, pose threats, groundwater contamination. Our...

The application of geoelectric methods, such as induced polarization (IP), the electrical resistivity and self-potential (SP), presents an important indirect study methodology in several areas geology, mining, geotechnics environmental geology. present deals with results method (SP) small earth dams cities Cordeirópolis Ipeúna, both state São Paulo. Studies Engineering Dams intensified at end century XX, due to alarming number dam disruptions. In Brazil, are still majority, around 90% total....

Failure events in dams can be associated with processes the dam body and foundation of structure. If they are properly identified early stages, corrective actions take place, leading to a reduction risk collapse and/or rupture dam. Most studies on carried out dam; however, problems structure also lead loss stability subsequent ruptures. This study presents an analysis advantages limitations use seismic refraction hydrogeological fractured aquifers under pressure from large loads,...

ABSTRACT. The application of non-destructive methods investigation in dams, such as refractive seismic method and Multichannel Analysis Surface Waves (MASW) are increasingly effective from the point choosing best dam site, well phases construction maintenance structure. objective research was to apply geophysical structure detect internal flow fluids, presence voids, find possible fracture zones variations level saturation massif, characteristics related permeability directly linked...

A case study on the application of parallel-seismic (PS) and induction-logging (IL) tests combined to evaluate depth a 25-cm diameter root-pile belonging foundations telecommunication tower located in Santana de Parnaíba, São Paulo, Brazil, is presented. The foundation element embedded friable altered meta-sandstone rock. relatively small pile presence rock as surrounding material tend limit interpretation PS test. Nevertheless, technique applied this showed satisfactory results. On other...

Este trabalho apresenta os resultados de uma investigação rasa onde foram comparados arranjos pólo-dipolo e dipolo-dipolo. O levantamento foi realizado em um único perfil com 40 metros extensão. No arranjo dipolo-dipolo, utilizou-se espaçamentos entre eletrodos igual a 2 m 1 m. Com pólo-dipolo, o espaçamento utilizado Os dados obtidos dipolo-dipolo combinados única seção posteriormente aos pólo-dipolo. A escolha dos níveis para cada efetuada forma atingir, priori , mesma profundidade...

A estratigrafia rasa da Ilha Comprida, localizada no litoral sul do Estado de São Paulo, foi analisada em detalhe através perfis radar solo penetrante (GPR), executados ao longo estrada que corta transversalmente a ilha sua porção extremo sudeste. O GPR constitui-se num método geofísico alta resolução, com vasta aplicação estudos áreas costeiras. Registros excelente qualidade obtidos neste estudo possibilitaram visualização características foram correlacionadas modelo evolutivo descrito para...

No presente artigo, são apresentados os resultados dos ensaios sísmicos de Multichannel Analysis of Surface Waves (MASW) realizados no subsolo do Edifício Copan, ícone arquitetônico e marco referencial da arquitetura paulistana. O objetivo ensaio foi avaliar a rigidez materiais em subsuperfície ao longo terreno embasamento edifício, tentando identificar locais onde estes apresentam maiores ou menores valores. Este método indireto não destrutivo, por fornecer uma alta razão sinal/ruído, é...

A ocorrência de escorregamentos em regiões serranas devido as chuvas vem motivando intensas discussões acerca da busca por mecanismos monitoramento dos processos hidrológicos escala detalhe. geofísica desponta como uma metodologia alternativa na superação deste desafio, dada a sua praticidade obtenção dados, capacidade resolução, relação custo/benefício, para além utilizarem métodos não invasivos. Assim, o objetivo pesquisa consiste explorar potencialidades do uso combinado método Sísmica...

Environmental contamination found in urban areas generally has a chemical composition that favors the generation of variety physical, and biological processes differ from natural soil parameters. Thus, understanding attenuation tropical environments is still challenge, as how biogeochemical can influence modify characteristics. The study aimed to apply methods are not commonly used investigations contaminated areas, order assess applicability non-invasive methodology for detailed...

Este trabalho apresenta os resultados de um levantamento 3D eletrorresistividade e avalia a potencialidade desta técnica aquisição dados em estudos geofísica rasa. Na dos foram utilizados 25 eletrodos dispostos uma malha quadrada 4m × 4m. O arranjo empregado foi o pólo-pólo com espaçamento entre igual 1m. Os obtidos comparados utilizando-se duas distintas sistemáticas campo, ambas confirmando capacidade da mapear as variações resistividade três dimensões. A experiência do campo confirmou...

Technical information about deep foundations of built structures may in some cases be unavailable or incomplete due to the lack construction documentation and electronic media which reports are stored. This problem is particularly relevant for telecommunication towers constructed two-to-three decades ago but still under operation subject new loading demands from expanding networks. Nondestructive evaluation with geophysical methods has been applied determine depth bottom foundations, a key...

Water table (WT) depth is an important parameter in engineering and environmental studies. This information can be easily obtained through drilling boreholes. Some geophysical methods also contribute to indirectly determine the WT depth. The that are effective achieving this goal GPR (ground penetrating radar) electrical resistivity (ER). Other methods, such as FDEM (frequency domain electromagnetic method), seismic refraction, reflection, employed measure article presents a discussion on...

This paper presents the results of a seismic test recent application in Brazil, called parallel seismic. is intended to determine maximum depth foundation element. Its has been tested on large diameter caisson and were very satisfactory.

Abstract The borehole magnetometry (BM) test was performed to evaluate the foundation reinforcement depth at a site where telecommunication tower is supported by single 2.3-m-diameter caisson of known as-built design. An optical televiewer probe containing three-axial fluxgate magnetometer lowered into vertical 2.35 m distant from center and profiles for total magnetic field flux density, its component were acquired used generate, subtracting International Geomagnetic Reference Field...

A case study on the application of seismic test recent use in Brazil, called Parallel Seismic (PS), to evaluate depth a 250-mm diameter root-pile belonging foundations telecommunication steel monopole located Arthur Alvim, São Paulo, is presented. The foundation element inserted sandy clay soil. estimated was obtained by analysis results from PS test. It evaluated as being equal 11 m, which later verified be agreement with pile's design drawings. When possibility drill boreholes at site...

The objective of this article is to discuss and assess the applicability geophysical methods by focusing on seismic in studies conducted shallow waters. Criteria help select most appropriate method solve geological or eotechnical issues must be established minimize problems, particularly environmental ones. focus waters was driven lack systematic data demand for geotechnical knowledge these areas, due concentration, sectors, main economic activities our current society like projects ports,...

Summary The use of non-destructive methods for investigations the physical stability conditions dams has become increasingly important, mainly comparing geophysical and geotechnical subsurface research. This association allows understanding evaluating processes that compromise dam, such as possible internal erosion (piping), example. recent disruption mining tailings in Brazil generated an alert. proved to be a research tool can worked with classical dam instrumentation, assisting...