NDLI: Integration of hydrological and ecological modelling for the assessment of a nuclear waste repository

Content Provider	Springer Nature Link
Author	Berglund, Sten Kautsky, Ulrik Lindborg, Tobias Selroos, Jan Olof
Copyright Year	2008
Abstract	The Swedish Nuclear Fuel and Waste Management Co. (SKB) is currently investigating two sites in Sweden as potential locations for underground disposal of spent nuclear fuel. The site investigations cover geology, chemistry, hydrology and ecology, among several other disciplines. Strong emphasis is put on the characterisation of properties and processes affecting the water-born transport and retention of radionuclides along potential flow paths from repository depth (ca. 500 m below ground) to ground surface, and the dispersal and accumulation of the radionuclides in the surface system. The modelling performed to support the site descriptions and the safety assessments utilises a wide range of hydrological modelling tools. These include tools primarily developed for modelling groundwater flow in fractured rock, and modelling tools that handle surface and subsurface flows, water uptake in vegetation and the interactions with the atmosphere. The couplings between the hydrogeology, the near surface hydrology and the surface ecosystems are especially important in this integrated modelling. This paper highlights some ecohydrological aspects of this coupled modelling and provides example results from site descriptive and safety assessment modelling.La Compagnie Suédoise de Gestion du Combustible Nucléaire et des Déchets (SKB) examine actuellement deux sites en Suède comme emplacements possibles pour l’enfouissement de combustible nucléaire consumé. Les études de terrain concernent la géologie, la chimie,l’hydrologie et l’écologie, parmi plusieurs autres disciplines. Une attention particulière est apportée à la caractérisation des propriétés et des processus affectant le transport par l’eau et la rétention de radionucléides le long de lignes de potentiel d’écoulement, de la profondeur du confinement (c. 500 m sous la surface) vers la surface du terrain, et la dispersion et l’accumulation des radionucléides dans le système de surface. La modélisation effectuée pour conforter les descriptions du site et les évaluations de sûreté utilisent une large palette d’outils de modélisation hydrologique. Ceux-ci comprennent des outils développés essentiellement pour modéliser l’écoulement de l’eau souterraine dans les roches fracturées, et des outils de modélisation qui traitent des écoulements de surface et de sub-surface, l’aspiration d’eau par la végétation et les interactions avec l’atmosphère. Les liaisons entre l’hydrogéologie, l’hydrologie de sub-surface et les écosystèmes superficiels sont particulièrement importantes dans cette modélisation intégrée. Cette présentation souligne quelques aspects écohydrologiques de cette modélisation couplée et fournit des résultats représentatifs de la modélisation de l’évaluation et de la sûreté d’un site.La Swedish Nuclear Fuel and Waste Management Co. (SKB) está actualmente investigando dos sitios en Suecia como posibles lugares de disposición subterránea del combustible nuclear utilizado. Las investigaciones en los sitios incluyen a la geología, química, hidrología y ecología, entre otras varias disciplinas. Se hace un fuerte énfasis en la caracterización de las propiedades y procesos que afectan el transporte por el agua- y la retención de los radionucleidos a través de las posibles trayectorias de flujo desde la profundidad del repositorio (c. 500 metros debajo de la tierra) hasta la superficie del terreno, y la dispersión y la acumulación de los radionucleidos en el sistema superficial. El modelado desarrollado describe y evalúa la seguridad del sitio utilizando una amplia gama herramientas de modelos hidrológicos. Estos incluyen herramientas que principalmente modelan el de flujo subterráneo en rocas fracturadas, y herramientas de modelación que manejan los flujos superficiales y subterráneos, la captación de agua en la vegetación y las interacciones con la atmósfera. El acoplamiento entre la hidrogeología, la hidrología próxima a la superficie y los ecosistemas superficiales son especialmente importantes en este modelo integrado. Este trabajo resalta algunos aspectos ecohidrológicos de esta modelación acoplada y proporciona resultados de ejemplos a partir del modelado de la evaluación de la descripción y seguridad del sitio.目前, 瑞典核燃料和废物管理公司 (SKB) 正在调查两个预选的废弃核废料地下处置库场址。场址调查涉及地质学、化学、水文学和生态学, 及若干其它学科。关注的重点在于影响放射性核素沿着从处置库 (地下500 m) 到地表的可能渗流路径的水介迁移和吸附, 及其在地表系统中的扩散和累积。为了支持场地描述和安全评价所进行的模拟应用了多种水文模拟手段。其中包括起初用来模拟裂隙岩体中地下水流动的工具和用于处理地表水和地下水流动、植被水分吸收及与大气的相互作用作用的模拟工具。水文地质、近地表水文学和地表生态系统的耦合在模拟中尤为重要。本文强调了耦合模拟中的一些生态水文学问题, 并列举了来自场地描述和安全评价的模拟结果实例。.A empresa sueca Swedish Nuclear Fuel and Waste Management Co (SKB) está presentemente a investigar dois locais na Suécia como localização potencial para o armazenamento subterrâneo de combustível nuclear usado. As investigações dos locais incluem estudos de geologia, química, hidrologia e ecologia, entre outras disciplinas. É dada forte ênfase à caracterização das propriedades e aos processos que afectam o transporte pela água e a retenção de radionuclídeos ao longo de potenciais linhas de fluxo desde a profundidade do repositório (ca. 500 m abaixo da superfície) até à superfície e à dispersão e acumulação dos radionuclídeos no sistema superficial. A modelação que foi realizada para apoiar a descrição do sítio e as avaliações de segurança utiliza uma grande variedade de ferramentas de modelação hidrológica. Estas incluem ferramentas inicialmente desenvolvidas para modelar o fluxo de água subterrânea em rochas fracturadas e ferramentas de modelação que tratam fluxos superficiais e subterrâneos, a toma de água pela vegetação e as interacções com a atmosfera. As relações entre a hidrogeologia, a hidrologia sub-superficial e os ecossistemas superficiais são especialmente importantes nesta modelação integrada. Este artigo realça alguns aspectos ecohidrológicos desta modelação relacional e fornece resultados exemplificativos da modelação da descrição do local e da avaliação de segurança.
Starting Page	95
Ending Page	113
Page Count	19
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	17
Issue Number	1
e-ISSN	14350157
Language	Portuguese
Publisher	Springer-Verlag
Publisher Date	2008-11-28
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Groundwater flow Ecohydrology Radionuclide transport Safety assessment Sweden Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Geology Hydrogeology
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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