Transcription of www.geoinvest.it 04/10/2010 1
1 04/10/2010129100 Piacenza -Via della Conciliazione, 45/aTelefono +39-0523-593622 ( )Telefax + is a privately owned geophysical and geotechnical engineering company with a reputation for providing timely and reliable serves individuals and industry, public and private companies, governments, international development agencies and academic in 1980 to enhance and develop geophysical technology for the geotechnical engineering sector, the company has steadily expanded to offer services in a wide range of geophysical exploration a staff of experienced professionals (from geophysicists and geologists to geotechnical engineers) and a large inventory of state-of-the-art in-house software, Geoinvest is uniquely positioned to serve most of exploration needs, whatever they involves:04/10/20104 Geoelectrical Surveys High resolution Resistivity Imaging IP tomography Electromagnetic Surveys Ground Penetrating Radar Frequency and time domain EM High resolution MT and AMTG ravity and Magnetic Surveys Total field GradiometrySeismic and Microseismic Vp and Vs refraction and tomography High resolution Reflection Borehole seismic04/10/20105 Geoinvest services are applied in the following fields.
2 Archaeology Preliminary investigations in regional planning Location of buried archaeological remainsEngineering Geology and Geotechnical Tunneling Highways Railways Pipelines Slope stability Foundations Cavity detectionHydro geological Studies Aquifer geometry , water well positioningEnvironmental Geology and contaminated site Site characterization Leachate plumes, contaminant migration Landfill study, Leak detection on liner geomembrane Vibrations monitoringMining Geophysics Hydrocarbon and mineral exploration Geothermal exploration04/10/20106 SUBSURFACE GEOPHYSICAL INVESTIGATION FOR GEOENGINEERING GROUNDWATER AND ENVIRONMENTAL STUDIES04/10/20107 GEOPHYSICAL METHODST hegeophysicalmethodologiesusephysicalpro pertiesofthematerialstocaracterizetheirp resenceanddistributioninthesubsurfaceMea suringformthesurfaceinanon-invasivewayge ophysicsisabletosupplyinformationsaboutt hesubsurfacestructureThemaingeophysicalp arametersare: electricalresistivity/conductivity elasticity,density magneticsuscettivity radioactivity04/10/20108 GEOPHYSICAL METHODSTo explore the subsurface you always need a source of energy who defines the method.
3 PASSIVE METHODS(Natural source) Natural electric currents (telluric) Electrical Spontaneus Potential Gravity Magnetism Seismic wavesACTIVE METHODS(Artificial source) Electromagnetic waves Electrical resistivity Seismic waves04/10/20109 VERTICAL ELECTRIC SOUNDINGS RESISTIVITY PROFILING ELECTRICAL IMAGINGELECTRICAL RESISTIVITY METHODST hese method are used for hydrogeological and ground contamination surveys, site investigation (geological and mineral prospecting) and archaeological surveying 04/10/201010 VERTICAL ELECTRIC SOUNDING -VES Fourelectrodes Measure resistivity at icreasing depth04/10/201011 VERTICAL ELECTRIC SOUNDING -VESVES FIELD CURVERESISTIVITY CROSS SECTION04/10/201012 VERTICAL ELECTRIC SOUNDING -VESLa profondit d indagine dipende da: Contrasto di resistivit ; Potenza degli elettrostrati; Profondit degli elettrostrati; Variazioni laterali di tali parametri; Anisotropia.
4 HYDROGEOLOGICAL 3D MODEL04/10/201013 VERTICAL ELECTRIC SOUNDING -VESHYDROGEOLOGICAL 3D MODEL04/10/201014 RESISTIVITY IMAGINGA CONTINUOUS 2D RESISTIVITY CROSS SECTIONF ield arrayMeasurement scheme04/10/201015DC Resistivity imagingData acquisitionAGI Super Sting R1 IPSwiftSmart electrodesand cablesAutomaticresistivity& IP imagingData processingComplete in-fieldQCCrookedlinecorrection& preliminaryanalysisData interpretation2D, 3D inversion3D topographicmodelingCooperative interpretation04/10/201016 Hydrogeological surveyEvaluation of the subsurface layering04/10/201017 Hydrogeological surveyGravelGravelClaySandEvaluation of the subsurface layering04/10/201018 Hydrogeological surveyEvaluation of the subsurface layering04/10/201019 Hydrogeological surveyGravelGravelClaySandWater well planning04/10/201020 Watertable contamination surveyTime-lapse monitoring04/10/201021 Geoengineering studies04/10/201022 ELECTRIC TOMOGRAPHY TO BUILT THE GEOLOGICAL SECTION FOR A TUNNEL FEASIBILITY STUDY04/10/201023 GEOLOGICAL SECTIONS04/10/201024 ELECTRIC TOMOGRAPHY 2D SECTIONS ON A TUNNEL PROJECT04/10/201025 ELECTRIC TOMOGRAPHY DATA PROCESSING 3D VIEW04/10/201026 ELECTRIC TOMOGRAPHY DATA PROCESSING 3D VIEW04/10/201027 ELECTRIC TOMOGRAPHY ON BRIDGE PROJECTS04/10/201028
5 ELECTRICAL TOMOGRAPHY SURVEY ON A INDUSTRIAL SITE ENVIRONMENTAL ASSESMENT04/10/201029 ELECTRICAL TOMOGRAPHY SURVEY FOR ENVIRONMENTAL SITE ASSESMENT04/10/201030 GEOPHYSICAL SITE ASSESMENT 3D VISUALIZATION04/10/201031 River bottom resistivity section04/10/201032 River bottom resistivity section04/10/201033 WASTE LANDFILL ELECTRICAL IMAGINGTHE VISUALIZATION OF A WASTE LANDFILL BODY CAN BE PERFORMED USING ELECTRIC IMAGING04/10/201034 GEOMEMBRANE LINERS CHECKTHE EARLY DETECTION OF A LEAKEAGE IN A GEOMEMBRANE LINER CAN AVOID POLLUTION FROM A WASTE DISPOSAL OR WATER LOOSE IN AN ARTIFICIAL LAKE04/10/201035 THE LEAKEAGE IN THE LINER CAN BE DETECTED PERFORMING AN ELECTRIC SURVEY JUST BEFORE THE FILLING PHASE OF THE BASIN GEOMEMBRANE LEAKEAGE DETECTION04/10/201036 ELECTROMAGNETIC CONDUCTIVITY SURVEYTHE ELECRICAL CHARACTERIZATION OF THE GROUND CAN BE PERORMED USING EM METHODSTHE CONDUCTIVITY (the reciprocal of resistivity) IS MEASURED WITHOUT ELECTRODES BUT THROUGH EM INDUCTION Frequency domain EM04/10/201037 ELECTROMAGNETIC CONDUCTIVITY SURVEYA CONDUCTIVITY SURVEY CAN EASILY DEFINE THE PRESENCE OF HIDDEN MATERIALS IN THE SUBSURFACETHE METHOD HAS WIDE VARIETY OF APPLICATIONS IN HYDROGEOLOGICAL, ENVIRONMENTAL AND ARCHAEOLOGICAL SURVEYS04/10/201038 ELECTROMAGNETIC SURVEY FOR INDUSTRIAL ENVIRONMENTAL SITE ASSESMENT04/10/201039 ELECTROMAGNETIC AND ELECTRICAL TOMOGRAPHY FOR ENVIRONMENTAL SITE ASSESMENT04/10/201040 Ground Penetrating Radar (GPR)
6 GPR ANOMALIESGROUND PENETRATING RADAR USES EM WAVE TO INVESTIGATE THE SUBSURFACEPHYSICAL DISCONTINUITIES DUE TO CHANGE IN THE ELECTRICAL PROPERTIES CAN REFLECT THE RADAR SIGNAL AND BE DETECTED FROM THE SURFACETHE METOD HAS A WIDE VARIETY OF APPLICATION FROM SITE CHARACTERIZATION TO ARCHAEOLOGICAL SURVEY04/10/201041 Ground Probing Radar (GPR)3D DATA PROCESSINGINFRASTRUCTURE CHECK ENVIRONMENTALSURVEY04/10/201042 GPR ANOMALIES FROM ARCHAEOLOGICAL REMAINS04/10/201043 GPR SURVEY GRID ARCHAEOLOGICAL ANOMALIES OUTLINE04/10/201044 GPR SURVEY SCHEME04/10/201045 GPR ANOMALIES TIME SLICE 3D VIEW04/10/201046 GPR ANOMALY SHOWING THE PRESENCE OF A BURIED TOMB BELOW A CHURCH FLOOR04/10/201047 SEISMIC METHODS REFRACTION SEISMIC -REFLECTION SEISMIC TOMOGRAPHYRock density affect the seismic propagation velocity The study of the propagation of the seismic waves in the ground is useful for determining interfaces between the different physical unitsThe most common seismic methods are.
7 04/10/2010482D SEISMIC TOMOGRAPHY ON BRIDGE PROJECTSSEISMIC PROPERTIES OF THE MATERIALS CAN BE USED TO BUILT UP A GEOLOGIC MODEL WITHIN GEOENGINEERING PROJECTS04/10/201049 SUBSURFACE 3D SEISMIC SURVEY SENSORS LAYOUT AND RAYPATHS04/10/201050 SUBSURFACE 3D SEISMIC SURVEY VELOCITY MODEL04/10/201051 TUNNELLING PROJECT -SEISMIC TOMOGRAPHY04/10/201052 TUNNELLING PROJECT -SEISMIC TOMOGRAPHY04/10/201053 TUNNELLING PROJECT -SEISMIC TOMOGRAPHY04/10/2010543D SEISMIC SURVEY ON A BRIDGE PILE04/10/2010553D SEISMIC SURVEY ON A BRIDGE PILE04/10/201056 MAGNETIC SURVEY -ARCHAELOGICAL CHARACTERIZATION04/10/201057 MAGNETIC SURVEY04/10/201058 MAGNETIC SURVEY PROCESSING04/10/201059 MAGNETIC SURVEY DATA INTERPRETATION OUTLINE OF THE POSSIBLE ARCHAEOLOGICAL STRUCTURES 04/10/201060 GEOELECTRICAL SURVEY for ARCHAEOLOGY04/10/201061 SITE EXCAVATIONS04/10/201062 High Resolution Gravity04/10/201063 High Resolution Gravity04/10/201064 High Resolution MTData acquisitionMT, AMT, CSMT, Continuous tensor profiling surveys24-bit networked systemGPS-clock synchronized remote referenceFrequency range: 24 KHz to HzData processingRemote reference & robust in-field processingComplete in-field QC, data analysis & preliminary interpretationData interpretationDecomposition & analysis1D, 2D inversion3D modelingCooperative interpretation04/10/201065EM METHOD FOR HYDROCARBON INVESTIGATIONRESISTIVITY vs FREQUENCY04/10/201066 AMT / MT FIELD ARRAY04/10/201067 AMT / MT SURVEY OUTLINE04/10/201068 AMT / MT CONTINUOUS PROFILING04/10/201069 AMT / MT CONTINUOUS PROFILING 2D MODEL04/10/201070 AMT / MT SURVEY TOP OF THE RESISTOR UNIT (SALT DOME)04/10/201071 Wake up !
8 This is the endThank you
