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  • Классическая футболка Patagonia No Dams Responsibili-Tee с оригинальным принтом выполнена из смеси переработанных материалов - 50% органического хлопка и 50% полиэстера. Такой подход дает возможность экономить ресурсы, уменьшает загрязнение окружающей среды. Добавление полиэстера делает материал более долговечным, он быстрее высыхает при намокании и лучше «дышит». Принт нанесен при помощи печати без ПВХ и фталатов. Усиленные плечевые швы надолго удерживают первоначальную форму, не позволяя футболке растягиваться во время использования и в то время, когда она весит на вешалке.

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  • The swelling of concrete is a major concern for the owners and operators of dams and hydraulic structures. Faced with irreversible movement of their dams or with observations of cracking processes, operators need to explain the phenomena observed in order to justify safety conditions and in some cases to plan remedial works. Over the last 20 years, active research has been carried out in the field, resulting in practical results in phenomena interpretation and dam modeling. At the same time, an increasing number of affected dams have undergone safety re-evaluations and in some cases remedial work. Several of them have been removed altogether. Although it remains difficult to establish a “state of the art” in this domain due to the rapidly changing context, regular international exchanges in the field appear fruitful and necessary. Following on from previous conferences in the field organized by Robin Charlwood, former President of the ICOLD Concrete Committee, the initiative was taken by EDF and Toulouse University-LMDC to organize a workshop to provide a new opportunity for sharing experience. The aim of this workshop is to assemble active researchers, leading engineers, and experts from the practicing community and administration interested directly or indirectly in concrete swelling effects in dams and hydraulic structures. All types of chemical expansion phenomena, including those due to alkali aggregate reactions and those due to ettringite formation, are addressed. These proceedings include 24 papers written by experts renowned in their field, illustrating the need to progress with interdisciplinary approaches.
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  • Erosion is the most common cause of failures at earth-dams, dikes and levees, whether through overtopping and overflowing, or internal erosion and piping. This book is dedicated to the phenomenon of internal erosion and piping. It is not intended to be exhaustive on the subject, but brings together some of the latest international research and advances. Emphasis is placed on physical processes, how they can be studied in the laboratory, and how test results can be applied to levees and dams. The results from several research projects in Australia, France, the Netherlands and the United States are covered by the authors. Our aim has been to share our most recent findings with students, researchers and practitioners. Understanding the failure of an earth-dam or a levee by erosion in a unified framework, whether internal erosion or surface erosion, requires continuous research in this field. We hope that the reader will gain knowledge from this book that leads to further progress in the challenging field of the safety of levees and dams. Contents 1. State of The Art on the Likelihood of Internal Erosion of Dams and Levees by Means of Testing, Robin Fell and Jean-Jacques Fry. 2. Contact Erosion, Pierre Philippe, Rémi Beguin and Yves-Henri Faure. 3. Backward Erosion Piping, Vera Van Beek, Adam Bezuijen and Hans Sellmeijer. 4. Concentrated Leak Erosion, Stéphane Bonelli, Robin Fell and Nadia Benahmed. 5. Relationship between the Erosion Properties of Soils and Other Parameters, Robin Fell, Gregory Hanson, Gontran Herrier, Didier Marot and Tony Wahl. About the Authors Stéphane Bonelli is a Research Professor at Irstea (French Environmental Sciences and Technologies Research Institute) in Aix-en-Provence, France. He has over 20 years of teaching and research experience, and has been a member of the ICOLD (International Commission on Large Dams) European Working Group on Internal Erosion since 2005. He has participated in 19 large dam reviews in France (visual inspection, monitoring data analysis and numerical modeling). His current activities include research, teaching and consultancy, focusing on soil erosion and the processes of levee breach.
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  • Previously published as After the Flood.Former RAF Tornado Navigator and Gulf War veteran John Nichol sets out on a personal journey to discover what happened to 617 Squadron after the flood.The role RAF 617 Squadron in the destruction of the dams at the heart of the industrial Ruhr has been celebrated in book, magazine and film for more than seventy years.On the 17th May 1943, 133 airmen set out in 19 Lancasters to destroy the Möhne, Eder and Sorpe dams. 56 of them did not return. Despite these catastrophic losses, the raid became an enormous propaganda triumph. The survivors were feted as heroes and became celebrities of their time.They had been brought together for one specific task – so what happened next? Of the 77 men who made it home from that raid, 32 would lose their lives later in the war and only 45 survived to see the victory for which they fought.Few are aware of the extent of the Dambuster squadron’s operations after the Dams Raid. They became the ‘go to’ squadron for specialist precision attacks, dropping the largest bombs ever built on battleships, railway bridges, secret weapon establishments, rockets sites and U-boat construction pens. They were involved in attempts on the lives of enemy leaders, both Hitler and Mussolini, created a ‘false fleet’ on D-day which fooled the Germans, and knocked out a German super gun which would have rained 600 shells an hour on London.In ‘After The Flood’, John Nichol retraces the path of 617 Squadron’s most dangerous sorties as their reputation called them into action again and again.
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  • Presents a systematic and comprehensive study of hydraulic fracturing, original in its concentration of core soil problems There have been a number of well-studied cases in which dams have failed or been damaged by concentrated leaks for no apparent cause. In some of these experiences, investigators concluded that differential settlement cracks were the probable causes, even though no cracks were seen on the surface. In these examples, it was not determined whether the crack was open before the reservoir filled or whether it might have opened afterward. In several unsolved problems on the safety of the earth-rock fill dam, the problem of hydraulic fracture in the soil core of the earth-rock fill dam is one that is widely paid attention by designers and researchers. Hydraulic fracturing is generally considered as a key cause which may induce the leakage of the dam during first filling. In this extensive book, a new numerical simulate method is suggested. The method is based on the conventional two-dimensional finite element technique, and the theoretical formulations to calculate energy release rate using virtual crack extension method. The influence factors on convergence of calculated J integral are investigated. The accuracy of the calculated J integral is verified by analysing the three typical problems in Fracture Mechanics, in which propagation of crack may follow mode I, mode II and mixed mode I-II respectively. Using the new numerical method, the factors affecting the occurrence of hydraulic fracturing in the earth-rock fill dam are investigated. The investigating results indicate that increasing any of the Young’s modulus, the Poisson’s ratio and the density of the core soil is helpful to reduce the likelihood of the occurrence of hydraulic fracturing. The likelihood of the occurrence of hydraulic fracturing increases with increasing the water level or the crack depth. The lower part of the dam core is the zone in which the phenomenon of hydraulic fracturing may be induced easily. As an example to analyse the ability of earth-rock fill dam to resist hydraulic fracturing, the Nuozhadu Dam located in Western China is analysed. Presents a systematic and comprehensive study of hydraulic fracturing, original in its concentration of core soil problems Focuses on the problem of hydraulic fracturing in earth-rock fill dams from three aspects; conditions and mechanisms of hydraulic fracturing, criterion of hydraulic fracturing, and numerical method on hydraulic fracturing Examines advanced laboratory soil testing, application of numerical methods and field testing/monitoring, all needed for a better understanding of hydraulic fracturing in earth/rock fill dams Provides an essential reference in an area of scarce research in this field, and the need in high earth dam construction in developing countries is pressing Ideal for researchers in Hydraulic and Geotechnical Engineering Fields; Students on Masters or PhD courses; as well as Designers and Constructors in Hydraulic and Geotechnical Engineering Fields.
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  • This book provides answers to the following problems: how to identify the most probable critical failures; how to describe and use data-concerning materials that are either heterogeneous, time-variant, or space-variant; how to quantify the reliability and lifetime of a system; how to use feedback information to actualize reliability results; and how to optimize an inspection politic or a maintenance strategy. Numerous authors from public research centers and firms propose a synthesis of methods, both new and well-known, and offer numerous examples concerning dams, geotechnical study, and structures from nuclear and civil engineering.
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  • The industrial revolution in the Soviet Union meant immeasurably more than the mere construction of a network of factories. In many ways, it determined the fate of the country and each of its citizens. The popularity of heroic workers was rivaled only by that of movie stars. Masses of people left their homes to build new gigantic factories. Millions labored in mines and built dams. Naturally, Soviet art could not ignore the theme of industry. Poets composed odes to construction sites, literature gained the new genre of the industrial novel, and words like Stakhanovite (a worker who produces fantastically large yields), socialist com­petition and truant took firm places in the language. Artists made panoramas of workshops, foundries and factories, and painted portraits of shock workers. Newspapers and magazines constantly printed reports of masters of photographs of the sites where Socialism was being built. Temporal distance now allows us to speak of industrial realism - a unique phenomenon in Soviet painting and photography and the subject of this book.
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  • Avoid common pitfalls in large-scale projects using these smart strategies Over half of large-scale engineering and construction projects—off-shore oil platforms, chemical plants, metals processing, dams, and similar projects—have miserably poor results. These include billions of dollars in overruns, long delays in design and construction, and poor operability once finally completed. Industrial Megaprojects gives you a clear, nontechnical understanding of why these major projects get into trouble, and how your company can prevent hazardous and costly errors when undertaking such large technical and management challenges. Clearly explains the underlying causes of over-budget, delayed, and unsafe megaprojects Examines effects of poor project management, destructive team behaviors, weak accountability systems, short-term focus, and lack of investment in technical expertise Author is the CEO of the leading consulting firm for evaluating billion-dollar projects Companies worldwide are rethinking their large-scale projects. Industrial Megaprojects is your essential guide for this rethink, offering the tools and principles that are the true foundation of safe, cost-effective, successful megaprojects.
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  • This book aims to deliver significant scientific progress on the problem of the erosion of geomaterials, focusing on the mechanical/physical aspect. The chapters oscillate between a phenomenological outlook that is well grounded in experiments, and an approach that can offer a modeling framework. The basic mechanisms of internal and surface erosion are tackled one-by-one: filtration, suffusion, contact erosion, concentrated leak erosion, sediment and wind transport, bedload transport. These erosion mechanisms comprise both hydraulic structures (dams, dikes) and natural environments (wind, river, coastal). In this book, physicists and mechanicians share with the reader their most recent findings in their field work and study, while at the same time maintaining an accessible format. This compendium provides a well-documented information resource, and above all, a tool for approaching the issue of erosion of geomaterials in an up-to-date fashion for students, researchers and practitioners alike.
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  • While numerous books have been written on earthquakes, earthquake resistance design, and seismic analysis and design of structures, none have been tailored for advanced students and practitioners, and those who would like to have most of the important aspects of seismic analysis in one place. With this book, readers will gain proficiencies in the following: fundamentals of seismology that all structural engineers must know; various forms of seismic inputs; different types of seismic analysis like, time and frequency domain analyses, spectral analysis of structures for random ground motion, response spectrum method of analysis; equivalent lateral load analysis as given in earthquake codes; inelastic response analysis and the concept of ductility; ground response analysis and seismic soil structure interaction; seismic reliability analysis of structures; and control of seismic response of structures. Provides comprehensive coverage, from seismology to seismic control Contains useful empirical equations often required in the seismic analysis of structures Outlines explicit steps for seismic analysis of MDOF systems with multi support excitations Works through solved problems to illustrate different concepts Makes use of MATLAB, SAP2000 and ABAQUAS in solving example problems of the book Provides numerous exercise problems to aid understanding of the subject As one of the first books to present such a comprehensive treatment of the topic, Seismic Analysis of Structures is ideal for postgraduates and researchers in Earthquake Engineering, Structural Dynamics, and Geotechnical Earthquake Engineering. Developed for classroom use, the book can also be used for advanced undergraduate students planning for a career or further study in the subject area. The book will also better equip structural engineering consultants and practicing engineers in the use of standard software for seismic analysis of buildings, bridges, dams, and towers. Lecture materials for instructors available at www.wiley.com/go/dattaseismic
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  • This book presents a comprehensive overview of the first longitudinal study of the downstream response of a major river to the establishment of a large hydropower facility and dams. Peace River, a northward flowing boreal river in northwestern Canada was dammed in 1967 and the book describes the morphological response of the 1200 km downstream channel and the response of riparian vegetation to the change in flow regime over the first forty years of regulated flows. Beginning with a description of the effect of regulation on the flow and sediment regimes of the river, the book proceeds to study changes in downstream channel geometry on the main stem, on the lowermost course of tributaries, and on the hydraulic geometry, the overall morphology of the channel, and riparian vegetation succession. The river is subject to annual freeze-up and break-up, so a chapter is devoted to the ice regime of the river. A chapter compares the effects of two extraordinary post-regulation flood events. The penultimate chapter presents a prediction of the ultimate equilibrium form of the regulated river based on rational regime theory. An online database of all the main observations will provide invaluable material for advanced students of river hydraulics and geomorphology. This book carefully brings together a range of studies that have been previously inaccessible providing a rare and comprehensive analysis of the effects of a big dam on a river, a river that itself represents an example of the kind of system that is likely to receive considerable attention in the future from dam engineers and environmentalists. • An invaluable reference to river scientists, hydroelectric power developers, engineers and environmentalists • Focus on a northward flowing boreal river, a type that holds most of the remaining hydroelectric power potential in the Northern Hemisphere • Exceptional separation of water and sediment sources, permitting study of the isolated effect of manipulating one of the two major governing conditions of river processes and form • Unique example of water regulation and both natural and engineered flood flows • Detailed study of both morphological changes of the channel and of the riparian vegetation • Online data supplement including major data tables and numerous maps. Details of the main observations and provides material for problem study by advanced students of river hydraulics and geomorphology are provided
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  • An eye-opening and vital account of the future of our earth and our civilisation if current rates of global warming persist, by the highly acclaimed author of ‘High Tide’.Picture yourself a few decades from now, in a world in which average temperatures are three degrees higher than they are now. On the edge of Greenland, rivers ten times the size of the Amazon are gushing off the ice sheet into the north Atlantic. Displaced victims of North Africas drought establish a new colony on Greenlands southern tip, one of the few inhabitable areas not already crowded with environmental refugees. Vast pumping systems keep the water out of most of Holland, but the residents of Bangladesh and the Nile Delta enjoy no such protection. Meanwhile, in New York, a Category 5-plus superstorm pushes through the narrows between Staten Island and Brooklyn, devastating waterside areas from Long Island to Manhattan. Pakistan, crippled by drought brought on by disappearing Himalayan glaciers, sees 27 million farmers flee to refugee camps in neighbouring India. Its desperate government prepares a last-ditch attempt to increase the flow of the Indus river by bombing half-constructed Indian dams in Kashmir. The Pakistani president authorises the use of nuclear weapons in the case of an Indian military counter-strike. But the biggest story of all comes from South America, where a conflagration of truly epic proportions has begun to consume the Amazon…Alien as it all sounds, Mark Lynass incredible new book is not science-fiction; nor is it sensationalist. The six degrees of the title refer to the terrifying possibility that average temperatures will rise by up to six degrees within the next hundred years. This is the first time we have had a reliable picture of how the collapse of our civilisation will unfold unless urgent action is taken.Most vitally, Lynass book serves to highlight the fact that the world of 2100 doesnt have to be one of horror and chaos. With a little foresight, some intelligent strategic planning, and a reasonable dose of good luck, we can at least halt the catastrophic trend into which we have fallen. But the time to act is now.
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