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Groundwater in Fractured Rocks

Groundwater in Fractured Rocks
IAH Selected Paper Series

by John M. Sharp

  • Publisher : CRC Press
  • Release : 2007-07-05
  • Pages : 666
  • ISBN : 0203945654
  • Language : En, Es, Fr & De
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The hydrogeologic environment of fractured rocks represents vital natural systems, examples of which occur on every continent. This book discusses key issues, methodologies and techniques in the hydrogeology of fractured rocks, summarizing recent progress and anticipating the outcome of future investigations. Forty-four revised and updated papers w

The Mirror Lake Fractured-rock Research Site

The Mirror Lake Fractured-rock Research Site
A Multidisciplinary Research Effort in Characterizing Ground-water Flow and Chemical Transport in Fractured Rock

by Allen M. Shapiro,Paul A. Hsieh,Thomas C. Winter,Geological Survey (U.S.)

  • Publisher : Unknown Publisher
  • Release : 1995
  • Pages : 1
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Methods of Characterizing Fluid Movement and Chemical Transport in Fractured Rock

Methods of Characterizing Fluid Movement and Chemical Transport in Fractured Rock
A Book

by Paul A. Hsieh,F. L. Paillet,C. Wayne Martin,Allen M. Shapiro,Christopher Cramer Barton,F. P. Haeni,Carole D. Johnson,Thomas C. Winter,David L. Wright

  • Publisher : Unknown Publisher
  • Release : 1993
  • Pages : 60
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Dynamic Fluids and Transport in Fractured Rock

Dynamic Fluids and Transport in Fractured Rock
A Book

by Boris Faybishenko,Paul A. Witherspoon,John Gale

  • Publisher : American Geophysical Union
  • Release : 2005-01-14
  • Pages : 207
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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A comprehensive review and analysis of recent field, laboratory, and modeling investigations of flow and transport through fractured rock worldwide. Topics include recent advances in modeling, unsaturated flow and transport processes, field and laboratory experiments, microbilogicial processes coupled process and geothermal resources, NAPL transport in fracutured rock, geochemistry and chemical transport and more.

Flow and Transport in Fractured Porous Media

Flow and Transport in Fractured Porous Media
A Book

by Peter Dietrich,Rainer Helmig,Heinz Hötzl,Martin Sauter,Jürgen Köngeter,Georg Teutsch

  • Publisher : Springer Science & Business Media
  • Release : 2005-03-02
  • Pages : 447
  • ISBN : 9783540232704
  • Language : En, Es, Fr & De
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This book addresses the characterization of flow and transport in porous fractured media from experimental and modeling perspectives. The volume explores porous media problems, from the origin of the present natural porous structures, to their characterization, and various flow and transport phenomena that exist within the porous media. Examples are miscible displacements in porous media and fractured rock and the physical and chemical interactions within porous fractured aquifers. The book is a comprehensive presentation of investigations performed and analysed on different scales, supporting the understanding and application of experimental studies and numerical simulations.

Transport Mechanisms of Uranium and Thorium in Fractured Rock Aquifers

Transport Mechanisms of Uranium and Thorium in Fractured Rock Aquifers
A Book

by Yazeed Van Wyk

  • Publisher : Unknown Publisher
  • Release : 2013
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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The Karoo has been receiving considerable attention since the early 1970's when uranium mining was at its peak, with numerous research studies being instigated to look at all aspects of uranium mining. It has recently been observed that there seems to be resurgence in uranium exploration in and around the town of Beaufort West. A study on the transport mechanisms of uranium and thorium in fractured-rock aquifers, initiated in the hope of understanding the actual processes controlling radionuclide mobilisation, is reported here. Hydrochemical investigations of the various boreholes were sampled for water quality in June, 2009. The hydrochemical description is typical of shallow fresh groundwater, changing composition to a more sulphate hydrochemical facies along the flow path. While the geochemistry of groundwater in the study area seems to have minimal effects on uranium concentrations, the low levels of uranium in boreholes sampled suggest the importance of hydrological and lithological variability on the measured concentrations. Nevertheless, the uranium concentration is within the recommended levels as specified in the US-EPA, WHO and SA water quality guidelines and thus poses no immediate threat to the general public. Analysis of pumping and tracer tests, reveals that the fractured-rock aquifer can be highly transmissive and that transport can take place via multiple flow paths having different hydraulic properties. Tracer diffusing into stagnant water zones within fracture asperities and the rock matrix are seen as an important retardation mechanism, that has implications for remediation should the aquifer be contaminated by radionuclides. In terms of conceptualising flow at a local scale, aperture sizes ranging from (563-828? m) along with high flow velocities (1.90E-03m/s), points to the importance of bedding-plane fractures as conduits of groundwater flow. The groundwater flow has been influenced by dolerite dykes creating compartments isolated from each other, suggesting a highly complex aquifer system. Based on the conceptual model, it is shown that these structures can create unique, site specific flow conditions. The integration of all available data into the conceptual model provides an effective research tool that can be built upon as a basis for further research.

Groundwater Flow and Quality Modelling

Groundwater Flow and Quality Modelling
A Book

by E. Custodio,A. Gurgui,J.P. Lobo Ferreira

  • Publisher : Springer Science & Business Media
  • Release : 2012-12-06
  • Pages : 843
  • ISBN : 9400928890
  • Language : En, Es, Fr & De
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Proceedings of the NATO Advanced Research Workshop on Advances in Analytical and Numerical Groundwater Flow and Quality Modelling, Lisbon, Portugal, June 2-6, 1987

A Review of Code for Modelling Groundwater Flow and Solute Transport in Fractured Rocks

A Review of Code for Modelling Groundwater Flow and Solute Transport in Fractured Rocks
A Book

by Great Britain. Radioactive Waste (Professional) Division

  • Publisher : Unknown Publisher
  • Release : 1989
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Characterization, Modeling, Monitoring, and Remediation of Fractured Rock

Characterization, Modeling, Monitoring, and Remediation of Fractured Rock
A Book

by National Academies of Sciences, Engineering, and Medicine,Division on Earth and Life Studies,Board on Earth Sciences and Resources,Committee on Geological and Geotechnical Engineering,Committee on Subsurface Characterization, Modeling, Monitoring, and Remediation of Fractured Rock

  • Publisher : National Academies Press
  • Release : 2020-12-29
  • Pages : 176
  • ISBN : 0309373751
  • Language : En, Es, Fr & De
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Fractured rock is the host or foundation for innumerable engineered structures related to energy, water, waste, and transportation. Characterizing, modeling, and monitoring fractured rock sites is critical to the functioning of those infrastructure, as well as to optimizing resource recovery and contaminant management. Characterization, Modeling, Monitoring, and Remediation of Fractured Rock examines the state of practice and state of art in the characterization of fractured rock and the chemical and biological processes related to subsurface contaminant fate and transport. This report examines new developments, knowledge, and approaches to engineering at fractured rock sites since the publication of the 1996 National Research Council report Rock Fractures and Fluid Flow: Contemporary Understanding and Fluid Flow. Fundamental understanding of the physical nature of fractured rock has changed little since 1996, but many new characterization tools have been developed, and there is now greater appreciation for the importance of chemical and biological processes that can occur in the fractured rock environment. The findings of Characterization, Modeling, Monitoring, and Remediation of Fractured Rock can be applied to all types of engineered infrastructure, but especially to engineered repositories for buried or stored waste and to fractured rock sites that have been contaminated as a result of past disposal or other practices. The recommendations of this report are intended to help the practitioner, researcher, and decision maker take a more interdisciplinary approach to engineering in the fractured rock environment. This report describes how existing tools-some only recently developed-can be used to increase the accuracy and reliability of engineering design and management given the interacting forces of nature. With an interdisciplinary approach, it is possible to conceptualize and model the fractured rock environment with acceptable levels of uncertainty and reliability, and to design systems that maximize remediation and long-term performance. Better scientific understanding could inform regulations, policies, and implementation guidelines related to infrastructure development and operations. The recommendations for research and applications to enhance practice of this book make it a valuable resource for students and practitioners in this field.

Conceptual Models of Flow and Transport in the Fractured Vadose Zone

Conceptual Models of Flow and Transport in the Fractured Vadose Zone
A Book

by National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Board on Earth Sciences and Resources,U.S. National Committee for Rock Mechanics,Panel on Conceptual Models of Flow and Transport in the Fractured Vadose Zone

  • Publisher : National Academies Press
  • Release : 2001-06-21
  • Pages : 392
  • ISBN : 0309073022
  • Language : En, Es, Fr & De
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Fluid flow and solute transport within the vadose zone, the unsaturated zone between the land surface and the water table, can be the cause of expanded plumes arising from localized contaminant sources. An understanding of vadose zone processes is, therefore, an essential prerequisite for cost-effective contaminant remediation efforts. In addition, because such features are potential avenues for rapid transport of chemicals from contamination sources to the water table, the presence of fractures and other channel-like openings in the vadose zone poses a particularly significant problem, Conceptual Models of Flow and Transport in the Fractured Vadose Zone is based on the work of a panel established under the auspices of the U.S. National Committee for Rock Mechanics. It emphasizes the importance of conceptual models and goes on to review the conceptual model development, testing, and refinement processes. The book examines fluid flow and transport mechanisms, noting the difficulty of modeling solute transport, and identifies geochemical and environmental tracer data as important components of the modeling process. Finally, the book recommends several areas for continued research.

Groundwater in Fractured Bedrock Environments: Managing Catchment and Subsurface Resources

Groundwater in Fractured Bedrock Environments: Managing Catchment and Subsurface Resources
A Book

by U. Ofterdinger,A. M. MacDonald,J.-C. Comte,M. E. Young

  • Publisher : Geological Society of London
  • Release : 2019-07-19
  • Pages : 250
  • ISBN : 1786204010
  • Language : En, Es, Fr & De
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Fractured bedrock aquifers have traditionally been regarded as low-productivity aquifers, with only limited relevance to regional groundwater resources. It is now being increasingly recognised that these complex bedrock aquifers can play an important role in catchment management and subsurface energy systems. At shallow to intermediate depth, fractured bedrock aquifers help to sustain surface water baseflows and groundwater dependent ecosystems, provide local groundwater supplies and impact on contaminant transfers on a catchment scale. At greater depths, understanding the properties and groundwater flow regimes of these complex aquifers can be crucial for the successful installation of subsurface energy and storage systems, such as deep geothermal or Aquifer Thermal Energy Storage systems and natural gas or CO2 storage facilities as well as the exploration of natural resources such as conventional/unconventional oil and gas. In many scenarios, a robust understanding of fractured bedrock aquifers is required to assess the nature and extent of connectivity between such engineered subsurface systems at depth and overlying receptors in the shallow subsurface.

Fluid Dynamics in Complex Fractured-Porous Systems

Fluid Dynamics in Complex Fractured-Porous Systems
A Book

by Boris Faybishenko,Sally M. Benson,John E. Gale

  • Publisher : John Wiley & Sons
  • Release : 2015-06-15
  • Pages : 264
  • ISBN : 1118877225
  • Language : En, Es, Fr & De
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Despite of many years of studies, predicting fluid flow, heat, and chemical transport in fractured-porous media remains a challenge for scientists and engineers worldwide. This monograph is the third in a series on the dynamics of fluids and transport in fractured rock published by the American Geophysical Union (Geophysical Monograph Series, Vol. 162, 2005; and Geophysical Monograph, No. 122, 2000). This monograph is dedicated to the late Dr. Paul Witherspoon for his seminal influence on the development of ideas and methodologies and the birth of contemporary fractured rock hydrogeology, including such fundamental and applied problems as environmental remediation; exploitation of oil, gas, and geothermal resources; disposal of spent nuclear fuel; and geotechnical engineering. This monograph addresses fundamental and applied scientific questions and is intended to assist scientists and practitioners bridge gaps in the current scientific knowledge in the areas of theoretical fluids dynamics, field measurements, and experiments for different practical applications. Readers of this book will include researchers, engineers, and professionals within academia, Federal agencies, and industry, as well as graduate/undergraduate students involved in theoretical, experimental, and numerical modeling studies of fluid dynamics and reactive chemical transport in the unsaturated and saturated zones, including studies pertaining to petroleum and geothermal reservoirs, environmental management and remediation, mining, gas storage, and radioactive waste isolation in underground repositories. Volume highlights include discussions of the following: Fundamentals of using a complex systems approach to describe flow and transport in fractured-porous media. Methods of Field Measurements and Experiments Collective behavior and emergent properties of complex fractured rock systems Connection to the surrounding environment Multi-disciplinary research for different applications

Water-resources Investigations Report

Water-resources Investigations Report
1983-1994

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1994
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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U.S. Geological Survey Toxic Substances Hydrology Program

U.S. Geological Survey Toxic Substances Hydrology Program
Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993

by David W. Morganwalp,David A. Aronson

  • Publisher : Unknown Publisher
  • Release : 1993
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Subsurface Hydrology

Subsurface Hydrology
Data Integration for Properties and Processes

by David W. Hyndman,Frederick D. Day-Lewis,Kamini Singha

  • Publisher : John Wiley & Sons
  • Release : 2013-04-30
  • Pages : 253
  • ISBN : 1118671805
  • Language : En, Es, Fr & De
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Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 171. Groundwater is a critical resource and the PrinciPal source of drinking water for over 1.5 billion people. In 2001, the National Research Council cited as a "grand challenge" our need to understand the processes that control water movement in the subsurface. This volume faces that challenge in terms of data integration between complex, multi-scale hydrologie processes, and their links to other physical, chemical, and biological processes at multiple scales. Subsurface Hydrology: Data Integration for Properties and Processes presents the current state of the science in four aspects: Approaches to hydrologie data integration Data integration for characterization of hydrologie properties Data integration for understanding hydrologie processes Meta-analysis of current interpretations Scientists and researchers in the field, the laboratory, and the classroom will find this work an important resource in advancing our understanding of subsurface water movement.

Multiphase Fluid Flow and Subsequent Geochemical Transport Invariably Saturated Fractured Rocks

Multiphase Fluid Flow and Subsequent Geochemical Transport Invariably Saturated Fractured Rocks
1. Approaches

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2000
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Reactive fluid flow and geochemical transport in unsaturated fractured rocks has received increasing attention for studies of contaminant transport, groundwater quality, waste disposal, acid mine drainage remediation, mineral deposits, sedimentary diagenesis, and fluid-rock interactions in hydrothermal systems. This paper presents methods for modeling geochemical systems that emphasize: (1) involvement of the gas phase in addition to liquid and solid phases in fluid flow, mass transport and chemical reactions, (2) treatment of physically and chemically heterogeneous and fractured rocks, (3) the effect of heat on fluid flow and reaction properties and processes, and (4) the kinetics of fluid-rock interaction. The physical and chemical process model is embodied in a system of partial differential equations for flow and transport, coupled to algebraic equations and ordinary differential equations for chemical interactions. For numerical solution, the continuum equations are discretized in space and time. Space discretization is based on a flexible integral finite difference approach that can use irregular gridding to model geologic structure; time is discretized fully implicitly as a first-order finite difference. Heterogeneous and fractured media are treated with a general multiple interacting continua method that includes double-porosity, dual-permeability, and multi-region models as special cases. A sequential iteration approach is used to treat the coupling between fluid flow and mass transport on the one hand, chemical reactions on the other. Applications of the methods developed here to variably saturated geochemical systems are presented in a companion paper (part 2, this issue).

Report - Water Resources Center, University of California

Report - Water Resources Center, University of California
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1981
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Site Characterisation of LNAPL-contaminated Fractured-rock Aquifer

Site Characterisation of LNAPL-contaminated Fractured-rock Aquifer
A Book

by Modreck Gomo

  • Publisher : Unknown Publisher
  • Release : 2009
  • Pages : 175
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Applied Hydrogeology of Fractured Rocks

Applied Hydrogeology of Fractured Rocks
A Book

by B.B.S. Singhal †,R.P. Gupta

  • Publisher : Springer Science & Business Media
  • Release : 2013-11-11
  • Pages : 400
  • ISBN : 940159208X
  • Language : En, Es, Fr & De
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Hydrology is a topical and growing subject, as the earth's water resources become scarcer and more vulnerable. Although more than half the surface area of continents is covered with hard fractured rocks, there has until now been no single book available dealing specifically with fractured rock hydrogeology. This book deals comprehensively with the fundamental principles for understanding these rocks, as well as with exploration techniques and assessment. It also provides in-depth discussion of structural mapping, remote sensing, geophysical exploration, GIS, field hydraulic testing, groundwater quality and contamination, geothermal reservoirs, and resources assessment and management. Hydrogeological aspects of various lithology groups, including crystalline rocks, volcanic rocks, carbonate rocks and clastic formations, are dealt with separately, using and discussing examples from all over the world. Applied Hydrogeology of Fractured Rocks will be an invaluable reference source for postgraduate students, researchers, exploration scientists, and engineers engaged in the field of groundwater development in fractured rock areas.

The role of fractures in regional groundwater flow

The role of fractures in regional groundwater flow
field evidence and model results from the basin-and-range of Texas and New Mexico

by James Roger Mayer

  • Publisher : Unknown Publisher
  • Release : 1995
  • Pages : 436
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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