Engineering-Research-Activity2015｜SHINSHU UNIV.

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NakayaLabNakayaLabstudiesthevisualizationofgroundwaterflowusingchemicaltracers.Forexample,sulfurhexafluoride(SF6)andchlorofluorocarbons(CFCs)gases,whicharefoundinatmospherebyanthropogenicproduction,inwaterarepotentialdatingtracersofyounggroundwater(~50yr).18Oand2Hinwaterarealsopotentialtracerstodetecttheorigins,thesourceareas,andthepathsofgroundwaterflowofspringandwellwaters.Fromtheageandtheflowpathofgroundwater,wecanunderstandsubsurfaceenvironmentinwatercycle.Bymeasuringchemicaltracersingroundwater,wecanclarifywhenandwherethegroundwaterwasrechargedaswellasitsflowpathandresidencetimefromtherechargezonetoasamplingpoint.Suchhydrologicaldatacanbeusedtopreservetheenvironmentofwatersourceareaandtosetuptherulesforsustainablewateruse.SolvingwaterproblemsinAsiathroughourresearchesisimportantforthefutureearth.Shinji Nakaya, Prof. Major : HydrologyRecently, have develop-eddating system of gro-undwater.Field Research : Bang-ladesh, China, Nagano, Okinawa, Miyagi, Osaka, Hyogo etc.Groundwater sampling in Ryukyu-limestone area, Okinawa Island.Collaboration with Univ. of Ryukyu.Dating & Visualization of Ground Water－using chemical tracers－Arsenic polluted groundwater & soil core sampling in a village along old Brahmaputra river, Sonargagon, Bangladesh. (Collab-work)Thegraduatesfromourlabareinvolvedinthemanagementofsurfacewaterandgroundwaterasresearchers,governors,andconsultantsinlocalandinternationalsocieties.Onegraduatewhowasinvestigatinggroundwaterpollutionisemployedinalawyer’soffice.CivilEngineeringAfter GraduationIn the FutureUmezaki LabMylaboratoryhasbeenpromotingfundamentalstudiesrelatedtostrengthanddeformationcharacteristicsofsoil.Toestablishmeasuresforwaterqualityinenclosedwaterareas,weareconductingindoorexperiments,fieldinvestigations,andverificationexperiments.Developmentofdecontaminationtechnologyofgroundcontaminatedbyradioactivematerialsarealsoconducted.Theseprojectsarecarriedoutinconjunctionwithmanyprivatefirmsintheformofjointresearch.Diversestudiesareconductedforelucidationoffundamentalsoilmechanics,aswellassurveysandimprovementofgroundenvironment.Inadditiontodisasterpreventionandenvironmentalpreservation,researchresultinginconstructionofalunarbase,planetaryexploration,andconstructionofunderseatownarepromoted.Inthelaboratory,studentsareworkingonexperimentsrelatedtothesetasks.TakeoUmezakiProfessor2014Professor1995AssociateProfessor,ShinshuUniv.1993ResearchAssociate,ShinshuUniv.1987ResearchAssociate,KyushuUniv.Reconstruction after Great Eastern Japan Earthquake using a cavity structure is proposed.From soilmechanics to ground environmentsDisaster prevention and environmental conservationSampling of bottom sediments in enclosed water areas (Suwa Lake), surveys of strength of lake bottom ground and density log.Graduatesareworkingingovernmentagenciesandlocalgovernmentengagedincityplanninganddisasterpreventionmeasures,atconstructioncompaniesandenvironmentalresearchfirmsengagedinimprovementofsocialcapital,andatresearchinstitutionsanduniversitiesaftergraduateschool.CivilEngineeringAfter GraduationIn the Future30

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