Download or read book Sealing of Boreholes and Underground Excavations in Rock written by K. Fuenkajorn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sealing of boreholes and underground excavations has not received much engineering attention until fairly recently. The growing awareness of and sensitivity to environmental concerns of the technical community as well as of the public at large has resulted in an increasing recognition of the fact that these geological penetrations may have an environmental impact. The issue of possible contamination resulting from migration along boreholes, adits, shafts or tunnels unquestionably has been raised most forcefully with in the context of nuclear waste disposal. Several nuclear waste disposal programs, notably the Civilian and the Defence programs of the US De partment of Energy, the US Nuclear Regulatory Commission and the Canadian and Swedish radioactive waste disposal programs have conducted major research efforts aimed at developing adequate seal designs for penet rations in host rock formations for high-level nuclear waste repositories. While a considerable data base has been gathered over the last two decades or so with regard to the performance of seals, most of the information is presented in research reports and widely scattered papers in journals and proceedings of conferences. Hence, the materials are not readily accessible to potential users such as designers, contractors or regulators who are not familiar with nuclear waste disposal programs.
Download or read book Sealing of Boreholes and Underground Excavations in Rock written by K. Fuenkajorn and published by Springer. This book was released on 2011-10-17 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sealing of boreholes and underground excavations has not received much engineering attention until fairly recently. The growing awareness of and sensitivity to environmental concerns of the technical community as well as of the public at large has resulted in an increasing recognition of the fact that these geological penetrations may have an environmental impact. The issue of possible contamination resulting from migration along boreholes, adits, shafts or tunnels unquestionably has been raised most forcefully with in the context of nuclear waste disposal. Several nuclear waste disposal programs, notably the Civilian and the Defence programs of the US De partment of Energy, the US Nuclear Regulatory Commission and the Canadian and Swedish radioactive waste disposal programs have conducted major research efforts aimed at developing adequate seal designs for penet rations in host rock formations for high-level nuclear waste repositories. While a considerable data base has been gathered over the last two decades or so with regard to the performance of seals, most of the information is presented in research reports and widely scattered papers in journals and proceedings of conferences. Hence, the materials are not readily accessible to potential users such as designers, contractors or regulators who are not familiar with nuclear waste disposal programs.
Download or read book Rock Mechanics Tools and Techniques written by Michel Aubertin and published by Taylor & Francis US. This book was released on 1996 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underground Excavations in Rock written by Evert Hoek and published by Spon E & F N (UK). This book was released on 1980 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Support of Underground Excavations in Hard Rock written by E. Hoek and published by CRC Press. This book was released on 2000-01-01 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The safe and economical construction of tunnels, mines, and other subterranean works depends on the correct choice of support systems to ensure that the excavations are stable. These support systems should be matched to the characterstics of the rock mass and the excavation techniques adopted. Establishing the support requirements, designing support systems and installing these correctly are essential elements in safe underground construction. This is a comprehensive and practical work which also gives access to user-friendly computer programmes which enable the investigation and design of support techniques. Details on how to obtain this software are also included in the book.
Download or read book Tailings Mine Waste written by and published by . This book was released on 1997 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface and Underground Excavations 2nd Edition written by Ratan Raj Tatiya and published by CRC Press. This book was released on 2013-05-13 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface and Underground Excavations – Methods, Techniques and Equipment (2nd edition) covers the latest technologies and developments in the excavation arena at any locale: surface or underground. In the first few chapters, unit operations are discussed and subsequently, excavation techniques are described for various operations: tunnelling, drifting, raising, sinking, stoping, quarrying, surface mining, liquidation and mass blasting as well as construction of large subsurface excavations such as caverns and underground chambers. The design, planning and development of excavations are treated in a separate chapter. Especially featured are methodologies to select stoping methods through incremental analysis. Furthermore, this edition encompasses comprehensive sections on mining at ‘ultra depths’, mining difficult deposits using non-conventional technologies, mineral inventory evaluation (ore – reserves estimation) and mine closure. Concerns over Occupational Health and Safety (OHS), environment and loss prevention, and sustainable development are also addressed in advocating a solution to succeed within a scenario of global competition and recession. This expanded second edition has been wholly revised, brought fully up-to-date and includes (wherever feasible) the latest trends and best practices, case studies, global surveys and toolkits as well as questions at the end of each chapter. This volume will now be even more appealing to students in earth sciences, geology, and in civil, mining and construction engineering, to practicing engineers and professionals in these disciplines as well as to all with a general or professional interest in surface and underground excavations.
Download or read book Surface and Underground Excavations written by Ratan Raj Tatiya and published by CRC Press. This book was released on 2013-05-13 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface and Underground Excavations – Methods, Techniques and Equipment (2nd edition) covers the latest technologies and developments in the excavation arena at any locale: surface or underground. In the first few chapters, unit operations are discussed and subsequently, excavation techniques are described for various operations: tunnelling, drifting, raising, sinking, stoping, quarrying, surface mining, liquidation and mass blasting as well as construction of large subsurface excavations such as caverns and underground chambers. The design, planning and development of excavations are treated in a separate chapter. Especially featured are methodologies to select stoping methods through incremental analysis. Furthermore, this edition encompasses comprehensive sections on mining at ‘ultra depths’, mining difficult deposits using non-conventional technologies, mineral inventory evaluation (ore – reserves estimation) and mine closure. Concerns over Occupational Health and Safety (OHS), environment and loss prevention, and sustainable development are also addressed in advocating a solution to succeed within a scenario of global competition and recession. This expanded second edition has been wholly revised, brought fully up-to-date and includes (wherever feasible) the latest trends and best practices, case studies, global surveys and toolkits as well as questions at the end of each chapter. This volume will now be even more appealing to students in earth sciences, geology, and in civil, mining and construction engineering, to practicing engineers and professionals in these disciplines as well as to all with a general or professional interest in surface and underground excavations.
Download or read book Sealing of Boreholes in Crystalline Rocks written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 1996 International Conference on Deep Geological Disposal of Radioactive Waste written by and published by . This book was released on 1996 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Waste Program S 839 to authorize the Secretary of Energy to enter into incentive agreements written by United States. Congress. Senate. Committee on Energy and Natural Resources and published by . This book was released on 1987 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Waste Program June 29 1987 written by United States. Congress. Senate. Committee on Energy and Natural Resources and published by . This book was released on 1987 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Waste Program written by United States. Congress. Senate. Committee on Energy and Natural Resources and published by . This book was released on 1987 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Measurements in Geomechanics written by F. Myrvoll and published by CRC Press. This book was released on 2003-01-01 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: A broad cross-section of papers from the 6th Internation Symposium FMGM in Oslo September 2003 detailing the latest developments in geomechanical field measurement technology and methods. Taking in a wide range of real-world applications from tunnels to off-shore structures, these papers look at both theoretical and practical aspects of the subject and assess performances in the field, providing a wealth of knowledge for professionals and researchers interested in field measurements, soil and granular mechanics, engineering, geology or construction.
Download or read book Geotechnical Instrumentation for Monitoring Field Performance written by John Dunnicliff and published by John Wiley & Sons. This book was released on 1993-10-06 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book on the subject written by a practitioner forpractitioners. Geotechnical Instrumentation for Monitoring FieldPerformance Geotechnical Instrumentation for Monitoring FieldPerformance goes far beyond a mere summary of the technicalliterature and manufacturers’ brochures: it guides readersthrough the entire geotechnical instrumentation process, showingthem when to monitor safety and performance, and how to do it well.This comprehensive guide: * Describes the critical steps of planning monitoring programsusing geotechnical instrumentation, including what benefits can beachieved and how construction specifications should bewritten * Describes and evaluates monitoring methods and recommendsinstruments for monitoring groundwater pressure, deformations,total stress in soil, stress change in rock, temperature, and loadand strain in structural members * Offers detailed practical guidelines on instrument calibrations,installation and maintenance, and on the collection, processing,and interpretation of instrumentation data * Describes the role of geotechnical instrumentation during theconstruction and operation phases of civil engineering projects,including braced excavations, embankments on soft ground,embankment dams, excavated and natural slopes, undergroundexcavations, driving piles, and drilled shafts * Provides guidelines throughout the book on the best practices
Download or read book Cutoff Modelling for Excavation Sealing in Underground Nuclear Waste Repositories written by Pushpendra Sharma and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: When placement rooms in a deep geological repository are constructed, different excavation damage zones (EDZs) with connected fractures (inner excavation damage zone - EDZi) close to the excavation surface and disconnected fractures (outer excavation damage zone - EDZo) further away form. A cutoff is an excavation constructed perpendicular to the placement room axis that creates a cross-sectional enlargement of the excavation, which when filled with a sealing material such as bentonite, seals the EDZi to minimize radionuclides transport through this zone. This research developed a framework to help determine the dimension and shape of an optimum cutoff, examining a wide range of geological scenarios using continuum numerical modelling. In the first stage, dimensions of different EDZs induced due to the excavation of the placement room were determined. In the second stage, based on the dimensions of EDZi from the first stage, rectangular, triangular, and trapezoidal cutoffs with different dimensions under different geological settings were constructed. In the third stage, the effect of different variants such as shape and orientation of placement room, rock mass properties and anisotropy, and heat from the nuclear fuel on the extent of EDZi around the optimum cutoff was studied. The depth of EDZs was predicted based on the sign and magnitude of volumetric strain inside the plastic zone from the numerical model. The extent of EDZs increases with an increase in the ratio of maximum stress around the excavation to the strength of the rock mass. The trapezoidal shaped cutoff, with a minimum thickness to depth (aspect) ratio (0.2), was found to be the optimum in this study based on its ability to induce a minimum increase in the EDZi after the construction of the cutoff. The radial extent of EDZi for the optimum cutoff is smaller for the granite followed by limestone and mudstone. The radial extent of EDZi for the optimum cutoff is lower for the limestone and mudstone with the absence of bedding planes compared to when bedding planes are present. Furthermore, for the given stress situation in this study, the radial extent of EDZi for the optimum cutoff for the horizontal placement room and vertical room (shaft) is found approximately equal. The radial extent of EDZi for the optimum cutoff for a circular placement room is smaller than the rectangular placement room. Finally, a maximum temperature of 64 oC at the cutoff increases from the mechanical only model the radial extent of EDZi and EDZo by 72 cm and 61 cm, respectively. This study helps in understanding excavation damage zones and designing cutoff for underground excavations, especially in underground nuclear waste repositories.
Download or read book Rules and Regulations written by U.S. Nuclear Regulatory Commission and published by . This book was released on 1987 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
