NDLI: Approaches to confirmatory testing of a groundwater flow model for sparsely fractured crystalline rock, exemplified by data from the proposed high-level nuclear waste repository site at Forsmark, Sweden

Content Provider	Springer Nature Link
Author	Follin, Sven Hartley, Lee
Copyright Year	2013
Abstract	The Svensk Kärnbränslehantering AB (SKB) has proposed the Forsmark site as a future repository for spent high-level nuclear fuel, involving disposal at about 470 m depth in sparsely fractured crystalline bedrock. An essential part of the completed inter-disciplinary site investigation was to develop an integrated account of the site and its regional setting, including the current state of the geosphere and the biosphere as well as natural processes affecting long-term evolution. First, this report recollects the integrated understanding and some key hydraulic characteristics of the crystalline bedrock at Forsmark along with a description of the flow model set-up and the methodology used for paleoclimatic flow modeling. Second, the protocol used for site-scale groundwater flow and solute transport modeling is demonstrated. In order to conduct a quantitative assessment of groundwater flow paths at Forsmark, the standard guide for groundwater flow modeling was elaborated on, to support both discrete and porous media flow approaches. In total, four independent types of data were used to confirm that the final groundwater flow model for the crystalline bedrock was representative of site conditions.La Compagnie Suédoise de Gestion de Combustible et de Déchets Nucléaires (SKB) a proposé le site de Forsmark en vue de l’entreposage futur de combustible nucléaire haute activité usagé, consistant en un stockage situé à environ 470 m de profondeur, dans un massif cristallin faiblement fracturé. Une partie essentielle de l’investigation interdisciplinaire complète menée a été de développer une présentation intégrée du site et de son contexte régional, incluant l’état actuel de la géosphère et de la biosphère, ainsi que les phénomènes naturels affectant leur évolution à long terme. En premier lieu, l’article rappelle l’approche globale et les caractéristiques hydrauliques principales du massif cristallin de Forsmark, en même temps que la description de la structure du modèle d’écoulement et la méthodologie utilisée pour simuler celui-ci sous conditions paléoclimatiques. En second lieu est exposé le protocole utilisé pour la modélisation de l’écoulement souterrain à l’échelle du site et du transfert de solutés. En vue de conduire l’évaluation quantitative des cheminements souterrains à Forsmark, un guide méthodologique de la modélisation souterraine a été élaboré, pour servir de base à ces approches aussi bien en milieu discontinu qu’en milieu poreux. Au total, quatre types indépendants de données ont été utilisés pour confirmer que le dernier modèle souterrain en date du massif cristallin est représentatif des conditions du site.El Swedish Nuclear Fuel and Waste Management Co. (SKB) ha propuesto el sitio de Forsmark como un futuro repositorio del combustible nuclear usado de alta radiactividad, involucrando su disposición a una profundidad de alrededor de 470 m en el basamento de roca cristalina dispersamente fracturado. Una parte esencial de la investigación interdisciplinaria completada en el sitio fue desarrollar un informe integrado del sitio y su configuración regional, incluyendo el estado actual de la geósfera y de la biósfera así como los procesos naturales que afectan la evolución a largo plazo. En primer lugar, este trabajo recoge el conocimiento integrado y algunas características hidráulicas claves del basamento cristalino en Forsmark conjuntamente con una descripción de la configuración de un modelo flujo y la metodología usada para modelado de flujo paleoclimático. Segundo, se demuestra el protocolo usado para el modelado de flujo subterráneo y de transporte de soluto en la escala del sitio. Con el objeto de llevar a cabo una evaluación cuantitativa de las trayectorias de flujo en Forsmark, se elaboró la guía standard para modelado de flujo subterráneo, para apoyar tanto los flujos discretos como los del medio poroso. En total, se utilizan cuatro tipos independientes de datos para confirmar que el modelo final de flujo de agua subterránea para el basamento cristalino era representativo para las condiciones del sitio.A Swedish Nuclear Fuel and Waste Management Co. (SKB) propôs o sítio de Forsmark como um futuro repositório de combustível nuclear usado de alto nível, estando o armazenamento a cerca de 470 m de profundidade em rocha cristalina escassamente fraturada. Uma parte essencial do concluído estudo interdisciplinar do sítio era o desenvolvimento de uma avaliação integrada do local e do seu enquadramento regional, incluindo o estado atual da geosfera e da biosfera, assim como dos processos naturais que afetam a sua evolução a largo prazo. Este artigo recorda, primeiro, o entendimento integrado e algumas características hidráulicas chave da formação rochosa de base em Forsmark, acompanhada de uma descrição da montagem de um modelo de fluxo e da metodologia utilizada para a modelação de fluxo paleoclimática. Seguidamente, explicita o protocolo utilizado na modelação de fluxo de água subterrânea e de transporte de solutos à escala do sítio. No sentido de se conduzir uma avaliação quantitativa dos percursos de fluxo em Forsmark, foi elaborado a esse propósito um guia normalizado para a modelação de fluxo de água subterrânea para apoiar ambas as abordagens de fluxo, em meios porosos e em meios discretos. No total, foram usados quatro tipos independentes de dados para confirmar que o modelo de fluxo de água subterrânea para a rocha cristalina era representativo das condições do local.
Starting Page	333
Ending Page	349
Page Count	17
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	22
Issue Number	2
e-ISSN	14350157
Language	Portuguese
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-12-11
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Crystalline rock Modeling protocol Nuclear waste Sweden Forsmark Hydrogeology Hydrology/Water Resources Geology Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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A methodology to constrain the parameters of a hydrogeological discrete fracture network model for sparsely fractured crystalline rock, exemplified by data from the proposed high-level nuclear waste repository site at Forsmark, Sweden

Overview of hydrogeological site-descriptive modeling conducted for the proposed high-level nuclear waste repository site at Forsmark, Sweden

A transmissivity model for deformation zones in fractured crystalline rock and its possible correlation to in situ stress at the proposed high-level nuclear waste repository site at Forsmark, Sweden

Effects on groundwater flow of abandoned engineered structures for the safety assessment of the proposed high-level nuclear waste repository site at Forsmark, Sweden

Groundwater flow modeling of periods with periglacial and glacial climate conditions for the safety assessment of the proposed high-level nuclear waste repository site at Forsmark, Sweden

Multi-scale groundwater flow modeling during temperate climate conditions for the safety assessment of the proposed high-level nuclear waste repository site at Forsmark, Sweden

Overview of hydrogeological safety assessment modeling conducted for the proposed high-level nuclear waste repository site at Forsmark, Sweden

Modeling of groundwater flow at depth in crystalline rock beneath a moving ice-sheet margin, exemplified by the Fennoscandian Shield, Sweden

Relation between mass balance aperture and hydraulic properties from field experiments in fractured rock in Sweden

Approaches to confirmatory testing of a groundwater flow model for sparsely fractured crystalline rock, exemplified by data from the proposed high-level nuclear waste repository site at Forsmark, Sweden

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A methodology to constrain the parameters of a hydrogeological discrete fracture network model for sparsely fractured crystalline rock, exemplified by data from the proposed high-level nuclear waste repository site at Forsmark, Sweden

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Approaches to confirmatory testing of a groundwater flow model for sparsely fractured crystalline rock, exemplified by data from the proposed high-level nuclear waste repository site at Forsmark, Sweden