Download or read book Recherche et d veloppement dans le domaine des barrages written by and published by . This book was released on 1995 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MODELISATION DES MASSIFS ROCHEUX FISSURES PAR LA METHODE DES ELEMENTS DISTINCTS written by ABDELOUAHED.. TAHIRI and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS CETTE RECHERCHE, NOUS AVONS DEVELOPPE UN CODE DE CALCUL (BRIG3D) POUR LA MODELISATION DES COMPORTEMENTS MECANIQUES DES MASSIFS ROCHEUX FISSURES EN TROIS DIMENSIONS. CE CODE DE CALCUL EST BASE SUR LA METHODE DES ELEMENTS DISTINCTS, IL MODELISE LES MILIEUX ROCHEUX FISSURES PAR UN ASSEMBLAGE DE BLOCS SUPPOSES RIGIDES PAR RAPPORTS A LEUR CONTACTS. IL PERMET DE CALCULER LE DEPLACEMENT DE L'ENSEMBLE DES BLOCS, QUI INTER-AGISSENT ENTRE EUX, A TRAVERS LEURS CONTACTS MUTUELS, SOUS L'EFFET DES SOLLICITATIONS EXTERIEURES. CES CONTACTS ONT DES COMPORTEMENTS MECANIQUES NON LINEAIRES. CECI NOUS A PERMIS D'ETUDIER LA DISTRIBUTION DES CONTRAINTES DANS LES MILIEUX FISSURES ET L'INFLUENCE DE LA FISSURATION SUR LA STABILITE DES TALUS ET DES GALERIES SOUTERRAINES ET LE COMPORTEMENT DES ANCRAGES

Download or read book MODELISATION DES MASSIFS ROCHEUX FRACTURES PAR LA METHODE DES ELEMENTS DISTINCTS written by MOUNTAKA.. SOULEY and published by . This book was released on 1993 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE COMPORTEMENT MECANIQUE DES MASSIFS ROCHEUX FRACTURES EST ENORMEMENT ET QUELQUEFOIS DRAMATIQUEMENT, AFFECTE PAR LE COMPORTEMENT DES DISCONTINUITES PRESENTES DANS LES MASSIFS. L'INFLUENCE DES DISCONTINUITES SUR LE COMPORTEMENT MECANIQUE DES MASSES ROCHEUSES A ETE DEMONTREE PAR DE NOMBREUSES ETUDES EXPERIMENTALES ET NUMERIQUES. LES JOINTS SONT A L'ORIGINE DES RUPTURES OU INSTABILITES OBSERVEES DANS LES STRUCTURES DU GENIE CIVIL ET LEUR COMPORTEMENT DEPEND DE NOMBREUX FACTEURS. PAR CONSEQUENT, LES MODELES DE COMPORTEMENT DES DISCONTINUITES ET LES PARAMETRES ASSOCIES JOUENT UN ROLE ESSENTIEL DANS LES APPLICATIONS DES TECHNIQUES NUMERIQUES. UN PROGRAMME PERMETTANT DE DETERMINER LES PARAMETRES DES LOIS CONSTITUTIVES DES DISCONTINUITES AINSI QUE LES CRITERES DE RUPTURE EN CISAILLEMENT, A PARTIR DES DONNEES D'ESSAIS EN LABORATOIRE, A ETE MIS AU POINT. SAEB ET AMADEI ONT DEVELOPPE UN MODELE ANALYTIQUE, INCREMENTAL ET NON LINEAIRE DE COMPORTEMENT DES JOINTS ROCHEUX. BASE SUR LA FORMULATION DES AUTEURS, NOUS AVONS GENERALISE LE COMPORTEMENT DES JOINTS ROCHEUX A DES SOLLICITATIONS CYCLIQUES DANS LA DIRECTION NORMALE ET AVEC CHANGEMENT DE DIRECTION DE SOLLICITATIONS DANS LA DIRECTION TANGENTE AU JOINT. LES DEUX MODELES ONT ETE IMPLANTES DANS LE CODE DE CALCUL DES ELEMENTS DISTINCTS UDEC. UNE VERIFICATION DES MODELES AINSI QU'UNE ETUDE PARAMETRIQUE ONT ETE REALISEES SUR DES GEOMETRIES SIMPLES (Y COMPRIS LES DEUX LOIS LINEAIRES DE UDEC). TROIS EXEMPLES D'APPLICATION A L'ETUDE DE L'INFLUENCE DES LOIS SUR LA STABILITE DES OUVRAGES ONT ETE TRAITES. LES DEUX PREMIERS ETUDIENT L'INFLUENCE DES LOIS DE COMPORTEMENT SUR LA STABILITE D'OUVRAGES A PLUSIEURS PROFONDEURS AINSI QUE L'INFLUENCE DE LA RIGIDITE DU MILIEU ENTOURANT LES FRACTURES. UNE COMPARAISON ENTRE LES RESULTATS DE LA MODELISATION (SELON LES LOIS CONSTITUTIVES ET CERTAINS PARAMETRES QU'ELLES FONT INTERVENIR DANS LEUR MISE EN UVRE) ET LES MESURES IN SITU CONSTITUENT LE TROISIEME EXEMPLE

Download or read book Geological Abstracts written by and published by . This book was released on 1987 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines for Open Pit Slope Design written by John Read and published by CSIRO PUBLISHING. This book was released on 2009-11-09 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guidelines for Open Pit Slope Design is a comprehensive account of the open pit slope design process. Created as an outcome of the Large Open Pit (LOP) project, an international research and technology transfer project on rock slope stability in open pit mines, this book provides an up-to-date compendium of knowledge of the slope design processes that should be followed and the tools that are available to aid slope design practitioners. This book links innovative mining geomechanics research into the strength of closely jointed rock masses with the most recent advances in numerical modelling, creating more effective ways for predicting rock slope stability and reliability in open pit mines. It sets out the key elements of slope design, the required levels of effort and the acceptance criteria that are needed to satisfy best practice with respect to pit slope investigation, design, implementation and performance monitoring. Guidelines for Open Pit Slope Design comprises 14 chapters that directly follow the life of mine sequence from project commencement through to closure. It includes: information on gathering all of the field data that is required to create a 3D model of the geotechnical conditions at a mine site; how data is collated and used to design the walls of the open pit; how the design is implemented; up-to-date procedures for wall control and performance assessment, including limits blasting, scaling, slope support and slope monitoring; and how formal risk management procedures can be applied to each stage of the process. This book will assist in meeting stakeholder requirements for pit slopes that are stable, in regards to safety, ore recovery and financial return, for the required life of the mine.

Download or read book Rock Mechanics written by Barry H.G. Brady and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition has been completely revised to reflect the notable innovations in mining engineering and the remarkable developments in the science of rock mechanics and the practice of rock angineering taht have taken place over the last two decades. Although "Rock Mechanics for Underground Mining" addresses many of the rock mechanics issues that arise in underground mining engineering, it is not a text exclusively for mining applications. Based on extensive professional research and teaching experience, this book will provide an authoratative and comprehensive text for final year undergraduates and commencing postgraduate stydents. For profesional practitioners, not only will it be of interests to mining and geological engineers, but also to civil engineers, structural mining geologists and geophysicists as a standard work for professional reference purposes.

Download or read book Ground Water in Hard Rocks written by Ingemar Larsson and published by . This book was released on 1984 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current manuals and technical books on ground water hydrology contain relatively little specific information on ground water in hard rocks areas, that is mainly igneous and metamorphic rocks of the Precambrian shield areas. This work is intented to fill this gap and to inform of the possibilities of finding and developing water resources in hard rocks areas

Download or read book Rock Engineering written by Bjørn Nilsen and published by . This book was released on 1993 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field Geology of High Grade Gneiss Terrains written by Cees W. Passchier and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although there are numerous publications on the geology of high-grade gneiss terrains, few descriptions exist of how to map and carry out structural analysis in these terrains. Textbooks on structural geology concentrate on technIques appli cable to low-grade terrains. Geologists who have no experience of mapping high-grade gneisses are often at a loss as to how to apply techniques to high grade rocks that were developed for low to medium grade metamorphic terrains. Any study of deep crustal processes and their development through time should begin with examination of the primary data source - outcrops of high grade metamorphic terrains. We feel that the urge to apply advanced techniques of fabric analysis, petrology, geochemistry, isotope geochemistry and age deter mination to these rocks often results in brief sampling trips in which there is little, if any analysis of the structural and metamorphic history revealed by outcrop patterns. Many studies of the metamorphic petrology and geochemistry of high-grade gneiss terrains make ineffective use of available field data, often because the authors are unaware of structural complexities and of the ways to recognise and use them. This is unfortunate, because much data can be collected in the field at minimal cost that cannot easily, if at all, be obtained from material in the laboratory. The primary igneous or sedimentary nature of a rock, the relative age of intrusive veins, and the sequence of deformation that they under went, can usually best be determined by straightforward observation in the field.

Download or read book Mineral and Thermal Groundwater Resources written by M. Albu and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Is it not generally believed that our town is a healthy place . . . a place highly com mended on this score both for the sick andfor the healthy? . . And then these Baths - the so-called 'artery' of the town, or the 'nerve centre' . . . Do you know what they are in reality, these great and splendid and glorious Baths that have cost so much money? . . A most serious danger to health! All that filth up in Melledal, where there's such an awful stench - it's all seeping into the pipes that lead to the pump-room! Henrik Ibsen, An Enemy of the People, 1882 Henrik Ibsen gave the 'truth about mineral water' more than 100 years ago in An Enemy of the People. His examples came not from the decadent bathing spas of Bohemia or Victorian Britain, but from the very edge of polite society, subarctic Norway! His masterpiece illustrates the central role that groundwaters and, in particular, mineral waters have played in the history of humanity: their economic importance for towns, their magnetism for pilgrims searching for cures, the political intrigues, the arguments over purported beneficent or maleficent health effects and, finally, their contami nation by anthropogenic activity, in Ibsen's case by wastes from a tannery. This book addresses the occurrence, properties and uses of mineral and thermal groundwaters. The use of these resources for heating, personal hygiene, curative and recreational purposes is deeply integrated in the history of civilization.

Download or read book Source to Sink Fluxes in Undisturbed Cold Environments written by Achim A. Beylich and published by Cambridge University Press. This book was released on 2016-07-07 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amplified climate change and ecological sensitivity of polar and cold climate environments are key global environment issues. Understanding how projected climate change will alter surface environments in these regions is only possible when present day source-to-sink fluxes can be quantified. The book provides the first global synthesis and integrated analysis of environmental drivers and quantitative rates of solute and sedimentary fluxes in cold environments, and the likely impact of projected climate change. The focus on largely undisturbed cold environments allows ongoing climate change effects to be detected and, moreover, distinguished from anthropogenic impacts. A novel approach for co-ordinated and integrative process geomorphic research is introduced to enable better comparison between studies. This highly topical and multidisciplinary book, which includes case studies covering Arctic, Antarctic, and alpine environments, will be of interest to graduate students and researchers in the fields of geomorphology, sedimentology and global environmental change.

Download or read book Rock Quality Seismic Velocity Attenuation and Anisotropy written by Nick Barton and published by CRC Press. This book was released on 2006-11-03 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic measurements take many forms, and appear to have a universal role in the Earth Sciences. They are the means for most easily and economically interpreting what lies beneath the visible surface. There are huge economic rewards and losses to be made when interpreting the shallow crust or subsurface more, or less accurately, as the case may be.

Download or read book Landslide Science and Practice written by Claudio Margottini and published by Springer Science & Business Media. This book was released on 2013-08-13 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains peer-reviewed papers from the Second World Landslide Forum, organised by the International Consortium on Landslides (ICL), that took place in September 2011. The entire material from the conference has been split into seven volumes, this one is the seventh: 1. Landslide Inventory and Susceptibility and Hazard Zoning, 2. Early Warning, Instrumentation and Monitoring, 3. Spatial Analysis and Modelling, 4. Global Environmental Change, 5. Complex Environment, 6. Risk Assessment, Management and Mitigation, 7. Social and Economic Impact and Policies.

Download or read book Snow and Ice Related Hazards Risks and Disasters written by and published by Academic Press. This book was released on 2014-10-27 with total page 787 pages. Available in PDF, EPUB and Kindle. Book excerpt: Snow and Ice-Related Hazards, Risks, and Disasters provides you with the latest scientific developments in glacier surges and melting, ice shelf collapses, paleo-climate reconstruction, sea level rise, climate change implications, causality, impacts, preparedness, and mitigation. It takes a geo-scientific approach to the topic while also covering current thinking about directly related social scientific issues that can adversely affect ecosystems and global economies. Puts the contributions from expert oceanographers, geologists, geophysicists, environmental scientists, and climatologists selected by a world-renowned editorial board in your hands Presents the latest research on causality, glacial surges, ice-shelf collapses, sea level rise, climate change implications, and more Numerous tables, maps, diagrams, illustrations and photographs of hazardous processes will be included Features new insights into the implications of climate change on increased melting, collapsing, flooding, methane emissions, and sea level rise

Download or read book Current Research 1994 written by Shasta A. Merlini and published by . This book was released on 1994 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Landslides Theory Practice and Modelling written by S.P. Pradhan and published by Springer. This book was released on 2018-06-28 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, with contributions from international landslide experts, presents in-depth knowledge of theories, practices, and modern numerical techniques for landslide analysis. Landslides are a reoccurring problem across the world and need to be properly studied for their mitigation and control. Due to increased natural and anthropogenic activities, chances of landslide occurrence and associated hazards have increased. The book focuses on landslide dynamics, mechanisms and processes along with hazard mitigation using geo-engineering, structural, geophysical and numerical tools. The book contains a wealth of the latest information on all aspects of theory, practices and modelling tools and techniques involved in prediction, prevention, monitoring, mitigation and risk analysis of landslide hazards. This book will bring the reader up to date on the latest trends in landslide studies and will help planners, engineers, scientists and researchers working on landslide engineering.

Download or read book Natural and Artificial Rockslide Dams written by Stephen G. Evans and published by Springer Science & Business Media. This book was released on 2011-08-28 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last one hundred years, a number of catastrophic events associated with rockslide dam formation and failure have occurred in the mountain regions of the world. This book presents a global view of the formation, characteristics and behaviour of natural and artificial rockslide dams. Chapters include a comprehensive state-of-the-art review of our global understanding natural and artificial rockslide dams, overviews of approaches to rockslide dam risk mitigation, regional studies of rockslide dams in India, Nepal, China, Pakistan, New Zealand, and Argentina. Rockslide dams associated with large-scale instability of volcanoes are also examined. Detailed case histories of well-known historic and prehistoric rockslide dams provide examples of investigations of rockslide dam behaviour, stability, and characteristics. The formation and behaviour of rockslide-dammed lakes ("Quake Lakes") formed during the 2008 Wenchuan Earthquake, China are also comprehensively summarised. The formation, sedimentology and stability of rockslide dams is examined in several analytical papers. An analysis of break-out floods from volcanogenic lakes and hydrological methods of estimating break-out flood magnitude and behavior are reviewed. The use of remote sensing data in rockslide-dammed lake characterisation is explored and a new approach to the classification of rockslide dams is introduced. Finally, a unique section of the book summarises Russian and Kyrgyz experience with blast-fill dam construction in two papers by leading authorities on the technology. The volume contains 24 papers by 50 authors from 16 countries including most of the recognised world authorities on the subject.