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  • 1
    Online Resource
    Online Resource
    GeomInt—Discontinuities in Geosystems From Lab to Field Scale (2023)
    Cham :Springer Nature Switzerland :
    Details
    Keywords: Environmental management. ; Geotechnical engineering. ; Refuse and refuse disposal. ; Environmental Management. ; Geotechnical Engineering and Applied Earth Sciences. ; Waste Management/Waste Technology.
    Description / Table of Contents: 1. Introduction to GeomInt -- 2. Hydro-mechanical effects in Opalinus clay -- 3. Pressure-driven percolation in Salt Rock -- 4. Stress redistribution -- 5. Virtual reality and computation. .
    Abstract: This is an open access book. In view of growing conflicts over strategic georesources, the use of the geological subsurface in the sense of a regional resource is becoming increasingly important. In this context, georeservoirs are playing an important role for the energy transition not only as a source of energy but also as a storage facility and deep geological disposal for energy waste. The success of the energy transition also depends to a large extent on the efficient and safe use of underground resources. This book complements the previous basic book (GeomInt—Integrity of Host Rocks) with a series of application examples in different rock formations, clay, salt, and crystalline. The methodology developed in GeomInt is used, among others, in the Mont Terri underground research laboratory (Opalinus Clay), in the large borehole test in Springen (salt rock) and in the “Reiche Zeche” teaching and research mine (crystalline rock). In addition, new methodological developments are also taken up in experiments and models and embedded in workflows for geotechnical system analyses. The present book summarizes the results of the collaborative project “GeomInt2: Geomechanical integrity of host and barrier rocks - experiment, modeling and analysis of discontinuities” within the program: Geo Research for Sustainability (GEO: N) of the Federal Ministry of Education and Research (BMBF).
    Type of Medium: Online Resource
    Pages: X, 98 p. 68 illus., 62 illus. in color. , online resource.
    Edition: 1st ed. 2023.
    ISBN: 9783031264931
    Series Statement: SpringerBriefs in Earth System Sciences,
    URL: https://doi.org/10.1007/978-3-031-26493-1
    DOI: 10.1007/978-3-031-26493-1
    DDC: 333.7
    Language: English
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    E-BOOKS (AWI ONLY)
  • 2
    Online Resource
    Online Resource
    GeomInt–Mechanical Integrity of Host Rocks (2021)
    Cham :Springer International Publishing :
    Details
    Keywords: Geotechnical engineering. ; Engineering geology. ; Geology. ; Geotechnical Engineering and Applied Earth Sciences. ; Geoengineering. ; Geology.
    Description / Table of Contents: 1. Introduction to GeomInt -- 2. Experimental Platform -- 3. Numerical Platform -- 4.Model-Experiment-Exercises (MEX) -- 5. Data Management -- 6. Synthesis and Outlook -- 7. Code Descriptions.
    Abstract: This open access book summarizes the results of the collaborative project “GeomInt: Geomechanical integrity of host and barrier rocks - experiment, modeling and analysis of discontinuities” within the Program: Geo Research for Sustainability (GEO: N) of the Federal Ministry of Education and Research (BMBF). The use of geosystems as a source of resources, a storage space, for installing underground municipal or traffic infrastructure has become much more intensive and diverse in recent years. Increasing utilization of the geological environment requires careful analyses of the rock–fluid systems as well as assessments of the feasibility, efficiency and environmental impacts of the technologies under consideration. The establishment of safe, economic and ecological operation of underground geosystems requires a comprehensive understanding of the physical, (geo)chemical and microbiological processes on all relevant time and length scales. This understanding can only be deepened on the basis of intensive laboratory and in-situ experiments in conjunction with reliable studies on the modeling and simulation (numerical experiments) of the corresponding multi-physical/chemical processes. The present work provides a unique handbook for experimentalists, modelers, analysts and even decision makers concerning the characterization of various types of host rocks (salt, clay, crystalline formations) for various geotechnical applications.
    Type of Medium: Online Resource
    Pages: XVI, 277 p. 216 illus., 176 illus. in color. , online resource.
    Edition: 1st ed. 2021.
    ISBN: 9783030619091
    Series Statement: Terrestrial Environmental Sciences,
    URL: https://doi.org/10.1007/978-3-030-61909-1
    DOI: 10.1007/978-3-030-61909-1
    DDC: 624.151
    Language: English
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    E-BOOKS (AWI ONLY)
  • 3
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    GeomInt: geomechanical integrity of host and barrier rocks–experiments, models and analysis of discontinuities (2021)
    Springer Berlin Heidelberg
    Details
    Publication Date: 2023-09-14
    Description: The present paper gives an overview of the GeomInt project “Geomechanical integrity of host and barrier rocks—experiment, modelling and analysis of discontinuities” which has been conducted from 2017–2020 within the framework of the “Geo:N Geosciences for Sustainability” program. The research concept of the collaborative project is briefly introduced followed by a summary of the most important outcomes. The research concept puts geological discontinuities into the centre of investigations—as these belong to the most interesting and critical elements for any subsurface utilisation. Thus, while research questions are specific, they bear relevance to a wide range of applications. The specific research is thus integrated into a generic concept in order to make the results more generally applicable and transferable. The generic part includes a variety of conceptual approaches and their numerical realisations for describing the evolution of discontinuities in the most important types of barrier rocks. An explicit validation concept for the generic framework was developed and realised by specific “model-experiment-exercises” (MEX) which combined experiments and models in a systematic way from the very beginning. 16 MEX have been developed which cover a wide range of fundamental fracturing mechanisms, i.e. swelling/shrinkage, fluid percolation, and stress redistribution processes. The progress in model development is also demonstrated by field-scale applications, e.g. in the analysis and design of experiments in underground research laboratories in Opalinus Clay (URL Mont Terri, Switzerland) and salt rock (research mine Springen, Germany).
    Description: BMBF
    Description: Helmholtz-Zentrum für Umweltforschung GmbH - UFZ (4215)
    Keywords: ddc:550.724 ; GeomInt ; Fracture flow ; Fracture mechanics ; Barrier integrity ; Discontinuities ; Open source ; OpenGeoSys
    Language: English
    Type: doc-type:article
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    CITATION GEO-LEO
  • 4
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    3D structure-soil-structure interaction in an arbitrary layered half-space (2022)
    Elsevier
    Details
    Publication Date: 2024-01-08
    Description: The aim of the study is to evaluate the 3D dynamic response of a finite geological region containing two structures and rested on a semi-infinite elastic layered half-space with a dynamic source radiating transient waves. The hybrid modelling approach is applied. It is based on the decomposition of the whole domain under consideration into two sub-regions: a finite-sized near-field elastic isotropic zone with two containment structures and the open semi-infinite far-field layered region. The far-field zone is a semi-infinite elastic isotropic arbitrary layered medium where the near-field finite geological region is located on. The 3D hybrid computational tool is based on the boundary element method (BEM) for the far-field layered zone and the finite element method (FEM) for the finite near-field domain. The model for the semi-infinite layered zone is further extended by the incorporation of a new condensation algorithm which makes it possible to handle 3D wave propagation through arbitrary layered half-space. The condensation algorithm is developed to avoid high computational memory cost while retaining the compatibility with the hybrid FEM-hosted procedure which facilitates the useful solution for the practical three-dimensional engineering problems. The BEM model of the dynamically active far-field zone is inserted as a macro-finite element (MFE) in the FEM commercial program ABAQUS. The accuracy and convergence study of the hybrid numerical scheme is presented. Numerical simulations convincingly illustrate that the dynamic response of structure-soil-structure system depends on different key factors and their mutual interplay. These factors are arbitrary layering of the far-field geological zone, the characteristics of the dynamic source, the site effects phenomena, the structure-soil-structure dynamic interaction, the type and geometrical disposition of foundations and structures and the 3D features of the dynamic motion.
    Type: Article , PeerReviewed
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    PAPER (OCEANREP)
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