Anders Mikalski_ 3D 超高分辨率地震.pdf

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1、Senior GeophysicistCOWI A/S13.March 20243D Ultra High Resolution Seismics in a confined lake environment,Mjsa,Norway13D Ultra High Resolution Seismicsin a confined lake environment,Mjsa,Norway13.March 20243D Ultra High Resolution Seismics in a confined lake environment,Mjsa,Norway2AgendaAim of the i

2、nvestigationSite challengesDesigning the platformSurvey operationsFinal 3D model13.March 20243D Ultra High Resolution Seismics in a confined lake environment,Mjsa,Norway3Aim of the investigationHigh resolution 3D geological modelSeismic velocity modelBoulder pickingCover the areas where geotechnical

3、 drilling was limitedChosen method:3D Ultra High Resolution Seismics13.March 20243D Ultra High Resolution Seismics in a confined lake environment,Mjsa,Norway4Site challengesShallow water/no waterLow tunnelsSmall harboursThe solutionSmall vessel with modular extension platform for land transport13.Ma

4、rch 20243D Ultra High Resolution Seismics in a confined lake environment,Mjsa,Norway5Designing the platformClose collaboration with sub-contractorsFocus on stability,safety and comfortThe resultLight-weight shallow draft modular platformFully stability tested to maritime standards 13.March 20243D Ul

5、tra High Resolution Seismics in a confined lake environment,Mjsa,Norway6Survey operationsHigh quality dataNo incidentsGood management of limited deck space13.March 20243D Ultra High Resolution Seismics in a confined lake environment,Mjsa,Norway7Final 3D modelCubed seismic datamodel flexible profilesBoulder picking down to a size of 0.6mHighly detailed 3D model for geotechnical engineersSenior Geophysicist,Anders Lykke Mikalski,M.sc.COWI A/S 13.March 20243D Ultra High Resolution Seismics in a confined lake environment,Mjsa,Norway8Acknowledgements/Thank You/Questions