A5036428462- Geophysical and Geoelectrical Methods
- Seismic Waves and Analysis
- Geophysical Methods and Applications
- Tailings Management and Properties
- Geophysics and Gravity Measurements
- Geochemistry and Geologic Mapping
- Dam Engineering and Safety
- Geological and Geophysical Studies
- Geological and Tectonic Studies in Latin America
- Reservoir Engineering and Simulation Methods
- Grouting, Rheology, and Soil Mechanics
- Geological Modeling and Analysis
- Drilling and Well Engineering
- Rock Mechanics and Modeling
- Geotechnical Engineering and Underground Structures
Universidade Federal do Rio de Janeiro
2021-2024
ABSTRACT. Airborne geophysical surveys are widely used in geological prospecting of hydrocarbon reservoirs. The efficiency and acquisition speed these methods covering large areas accredit them as a key tool for any exploration project where there sparse technical data available to support the exploratory decisions. Among airborne methods, potential namely, gravity magnetics most spread oil & gas projects this nature. Such generation regional knowledge also detailed approaches,...
ABSTRACT. The geophysical imaging of sub-basalt targets is still the main objective current exploratory efforts at Paran´a Basin, Brazil. Serra Geral Formation represents a singular challenge in world’s geology that consists performing investigation under thick basalt layer. Through forward modeling standard reference models, supported by idea to simulate gravity response basin virtual environment,...Keywords: 3D simulation, complex synthetic model, targets. RESUMO. O imageamento de...
In many exploration projects, drill cores are not always recovered due to the high costs involved in drilling, recovering and storage. some cases, benefits of core recovery outweigh limitations, while others it may be more advantageous use alternative methods obtain relevant information about drilled hole. This study presents a vertical succession rocks from Rio Negro Magmatic Arc that normally seen because rare areas with outcrops difficult access. The aim this is correlate petrophysical...
The geotechnical monitoring of tailings dams combined with a suitable application geophysical electrical methods can improve their structure evaluation, allowing several correlations between direct analyses and the resistivity anomaly pattern. Considering this synergy, twenty-three sections (ERT) were acquired along beach, abutments, central part dam, totalizing 10,776 m dataset. After interpretation each ERT section, comparing ranges water level meters measurements, three zones defined:...
Mining induced seismicity can expose tailings dams to ground motions with potential trigger a failure, if the structure reaches certain level of vibrations that could exceed seismic coefficient design criteria from pseudostatic analysis. Despite cited risk, mainly for are closer open pits, few in Brazil monitored by microseismic systems, and there no references literature about continuous monitoring both pit (source) dam, which represents motivation this paper. A system was commissioned...
In this paper we present the results of integration various High Resolution Airborne Magnetic (HRAM) surveys that have been conducted by FUGRO-Lasa-Geomag in Santos Basin since 1998. These greatly differ from old airborne and marine magnetic data were acquired past. The high spatial resolution accuracy measurements amplitude positioning anomalies characterize data. We a variety maps obtained through use Fourier filtering techniques discuss their value to magneto-structural imaging...
ABSTRACT. Ground motions caused by routine blasting activities represent a concern for mining companies, that face the challenge of producing without causing critical damage to tailings dams, mine pit slopes and waste piles. Few dams in Brazil are monitored microseismic systems, there no references literature about monitoring open dam. In order analyze ground motion data induced blats their relationship with dam stability, it was installed seismic system, records events continuously an array...
To support decarbonization initiatives, the mining sector is required to expand its production capacity, consequently leading utilization of dams for storing resulting tailings. These facilities, which are frequently built utilizing resources derived from process, undergo successive expansions in order deal with increasing volumes. As a consequence operational requirements imposed on these dams, they face heightened vulnerabilities that may result collapses, as evidenced by recent accidents...
To support decarbonization initiatives, the mining sector is required to expand its production capacity, consequently leading utilization of dams for storing resulting tailings. These facilities, which are frequently built utilizing resources derived from process, undergo successive expansions in order deal with increasing volumes. As a consequence operational requirements imposed on these dams, they face heightened vulnerabilities that may result collapses, as evidenced by recent accidents...