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dc.contributor.authorWeert FHA van
dc.contributor.authorHassanizadeh SM
dc.date.accessioned2012-12-12T12:57:44Z
dc.date.available2012-12-12T12:57:44Z
dc.date.issued1992-08-31
dc.identifier725206008
dc.identifier.urihttp://hdl.handle.net/10029/255994
dc.description.abstractAbstract niet beschikbaar
dc.description.abstractThe Gorleben salt dome is overlain by Tertiary and Quaternary sediments, which form a complex hydrogeological system of aquifers and aquitards. In general one can recognize a lower and an upper aquifer both consisting of sand and gravel, and an intermediate clay complex isolating the two aquifers. In this study, the "Weisses Moor" pumping test data are used to obtain information about the hydraulic properties of the Gorleben system. The interpretation of the Weisses Moor pumping test will be carried out in steps of increasing difficulty. This report contains the results of the first step of modelling. It is assumed that the variations in the salt concentration can be neglected and that the porous medium is homogeneous and isotropic. Under such circumstances, the drawdowns observed in the observation wells due to a pumping test can be described by the Theis solution. The AQ-AT code, developed at RIVM, is used to minimize the sum of squared differences between the observed and theoretical drawdown to obtain optimal values of storativity and transmissivity. It appears that there are significant differences between the optimal values calculated for various observation wells. Therefore, the assumptions of homogeneity, isotropy and/or constant salt concentration do not apply. These assumptions will be relaxed in the following modelling steps in order to obtain more satisfactory results.
dc.description.sponsorshipDGM/SVS
dc.format.extent34 p
dc.language.isoen
dc.relation.ispartofRIVM Rapport 725206008
dc.relation.urlhttp://www.rivm.nl/bibliotheek/rapporten/725206008.html
dc.subject13nl
dc.subjectgrondwaternl
dc.subjectstromingnl
dc.subjectzoutnl
dc.subjectwiskundig modelnl
dc.subjecttransportnl
dc.subject92-3nl
dc.subjectpompproefnl
dc.subjecttheis methodenl
dc.subjectpumping testnl
dc.subjecttheis method; geohydrologienl
dc.subjectgroundwateren
dc.subjectflowen
dc.subjectsalten
dc.subjectsalt domesen
dc.subjecttransport processesen
dc.subjectmodellingen
dc.subjectgeohydrologyen
dc.titleINTRAVAL Phase 2, test case. Saline Groundwater Movement in an Erosional Channel Crossing a Salt Domeen
dc.title.alternativeINTRAVAL fase 2, test case. Zout grondwater stroming door een "rinne" boven een zoutkoepelnl
dc.typeReport
dc.date.updated2012-12-12T12:57:44Z
html.description.abstractAbstract niet beschikbaar
html.description.abstractThe Gorleben salt dome is overlain by Tertiary and Quaternary sediments, which form a complex hydrogeological system of aquifers and aquitards. In general one can recognize a lower and an upper aquifer both consisting of sand and gravel, and an intermediate clay complex isolating the two aquifers. In this study, the "Weisses Moor" pumping test data are used to obtain information about the hydraulic properties of the Gorleben system. The interpretation of the Weisses Moor pumping test will be carried out in steps of increasing difficulty. This report contains the results of the first step of modelling. It is assumed that the variations in the salt concentration can be neglected and that the porous medium is homogeneous and isotropic. Under such circumstances, the drawdowns observed in the observation wells due to a pumping test can be described by the Theis solution. The AQ-AT code, developed at RIVM, is used to minimize the sum of squared differences between the observed and theoretical drawdown to obtain optimal values of storativity and transmissivity. It appears that there are significant differences between the optimal values calculated for various observation wells. Therefore, the assumptions of homogeneity, isotropy and/or constant salt concentration do not apply. These assumptions will be relaxed in the following modelling steps in order to obtain more satisfactory results.


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