Download or read book Clay Lumps Under Simulated Hydraulic Transport Conditions written by D. Leshchinsky and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory experiments with compacted kaolinite-bentonite mixtures indicate that degradation of hydraulically transported clay lumps in a dredge pipeline can be predicted and controlled to some extent. The size reduction of these lumps depends not only on the length of the pipeline but also on the density of the clay being dredged, the plasticity index (PI) of the clay, and the velocity of the dragging slurry in the pipe. A series of graphs shows percent reduction in clay lumps as a function of PI and velocity at three levels of relative compacted density.
Download or read book Hydraulically Transported Clay Balls written by Stephen D. Richter and published by . This book was released on 1994 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dredging Research Program Hydraulically Transported Clay Balls written by and published by . This book was released on 1994 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Behavior of dredged clay lumps varies widely depending upon their geotechnical characteristics. Predicting the behavior of clay lumps in important in estimating the difficulties associated with the transporting phase of dredged materials. Existing engineering soil descriptors are not oriented towards dredging operations and therefore cannot be used for accurate behavior predictions. Usage of these predictors in practice often leads to disputes between the parties involved in the dredging project. This work presents the empirical relationship between basic clay properties and the degradation rate of clay balls being hydraulically transported. Various clay consistencies were simulated in the laboratory using different proportions of kaolinite and bentonite in mixture. These clays were then statically compacted to different degrees of density relative to their maximum standard Proctor dry density. To simulate the hydraulic transport effects, samples were subjected to two types of tests. In the first one, clay samples were clamped and lowered underwater and were spun for different times and velocities. The remaining intact portions of the samples were then dried and weighed to determine the effect of relative movement of water against the clay. In the second test, clay samples were placed in a drum, partially submerged in water.
Download or read book Tunnels and Underground Cities Engineering and Innovation Meet Archaeology Architecture and Art written by Daniele Peila and published by CRC Press. This book was released on 2020-06-30 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art. Volume 6: Innovation in underground engineering, materials and equipment - Part 2 contains the contributions presented in the eponymous Technical Session during the World Tunnel Congress 2019 (Naples, Italy, 3-9 May 2019). The use of underground space is continuing to grow, due to global urbanization, public demand for efficient transportation, and energy saving, production and distribution. The growing need for space at ground level, along with its continuous value increase and the challenges of energy saving and achieving sustainable development objectives, demand greater and better use of the underground space to ensure that it supports sustainable, resilient and more liveable cities. The contributions cover a wide range of topics, from artificial intelligence techniques for geomechanical forecasting, via fiber reinforced concrete segmental lining, to advanced 4-channel scan systems for tunnel inspection. The book is a valuable reference text for tunnelling specialists, owners, engineers, archaeologists, architects, artists and others involved in underground planning, design and building around the world, and for academics who are interested in underground constructions and geotechnics.
Download or read book Effects of Short Polymeric Fibers on Crack Development in Clays written by Stacy Shulley-Ziegler and published by . This book was released on 1997 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Degradation of Clay Under Hydraulic Transport Conditions written by Stephen D. Richter and published by . This book was released on 1991 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grand Ethiopian Renaissance Dam Versus Aswan High Dam written by Abdelazim M. Negm and published by Springer. This book was released on 2018-10-22 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique volume discusses various aspects of the Grand Ethiopian Renaissance Dam (GERD) and the Aswan High Dam (AHD) including their positive and negative impacts. It presents up-to-date research findings by Egyptian scientists and researchers covering several interesting hot topics under the following main themes: · Major impacts of GERD compared with the AHD · Environmental impacts of the AHD · Modeling scenarios investigating the impacts of GERD on the AHD and downstream · Environmental and social impacts of GERD on Egypt · Status and assessment of the sediment of the AHD reservoir and modeling the impacts of GERD on Lake Nubia sediment accumulation · Proposed scenarios for maximizing the benefits of the AHD reservoir · International aspects of GERD and the AHD The volume also offers a set of conclusions and recommendations to optimize the cooperation between Egypt, Sudan, and Ethiopia. It appeals to postgraduate students, researchers, scientists, professionals and policy planners.
Download or read book Slurry Systems Handbook Second Edition written by Baha Abulnaga and published by McGraw Hill Professional. This book was released on 2021-03-05 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete guide to slurries and slurry systems―fully updated for the latest advances This thoroughly revised guide contains start-to-finish coverage of slurry systems—from fundamentals and fluid mechanics to pump design and materials selection. Written by a recognized expert in the field, Slurry Systems Handbook, Second Edition clearly explains the components, dynamics, and design of slurry systems for many applications, including mineral processing, nuclear waste processing, extra heavy oil upgrade, mineral concentrate transport, tailings systems and metal melting. You will get real-world examples, solved problems, and current codes as well as guidelines for conducting feasibility studies and hands-on operating procedures. Coverage includes: General concepts of slurry flows Multi-species and stratified heterogeneous flows Non-Newtonian slurry flows Open channel and cascade slurry flows Slurry Hammer and Transients in closed and open channels Centrifugal and positive displacement slurry pumps Long distance slurry pipelines by commodity such as coal, copper, phosphate or gold Oil sand extraction Slurry reactors, hydrocracking and heat transfer Hydrocarbon and hydrate-based slurry pipelines Semi-solid metals casting Tailings systems, paste backfilling Slurry flows for nuclear waste processing De-silting hydroelectric reservoirs
Download or read book Dredging Research written by and published by . This book was released on 1989 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book North American Tunnelling Vol 1 Only written by Levent Ozdemir and published by CRC Press. This book was released on 1996-05 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydraulic Performance of Compacted Clay Liners CCLS Under Simulated Landfill Conditions written by Abdulghader Abdulrahman and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oil Sands Preprints Bitumen production Bitumen conversion and processing written by and published by . This book was released on 1993 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Groundwater Modeling written by Mary P. Anderson and published by Academic Press. This book was released on 2015-08-13 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition is extensively revised throughout with expanded discussion of modeling fundamentals and coverage of advances in model calibration and uncertainty analysis that are revolutionizing the science of groundwater modeling. The text is intended for undergraduate and graduate level courses in applied groundwater modeling and as a comprehensive reference for environmental consultants and scientists/engineers in industry and governmental agencies. - Explains how to formulate a conceptual model of a groundwater system and translate it into a numerical model - Demonstrates how modeling concepts, including boundary conditions, are implemented in two groundwater flow codes-- MODFLOW (for finite differences) and FEFLOW (for finite elements) - Discusses particle tracking methods and codes for flowpath analysis and advective transport of contaminants - Summarizes parameter estimation and uncertainty analysis approaches using the code PEST to illustrate how concepts are implemented - Discusses modeling ethics and preparation of the modeling report - Includes Boxes that amplify and supplement topics covered in the text - Each chapter presents lists of common modeling errors and problem sets that illustrate concepts
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1987 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on Tidal Hydraulics written by and published by . This book was released on 1996 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on Tidal Hydraulics written by United States. Army. Corps of Engineers. Committee on Tidal Hydraulics and published by . This book was released on 1996 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Slurry Transport Using Centrifugal Pumps written by K. C. Wilson and published by Springer Science & Business Media. This book was released on 2008-03-28 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1,1 Applications of Slurry Transport Vast tonnages are pumped every year in the form of solid-liquid mixtures, known as slurries. The application which involves the largest quantities is the dredging industry, continually maintaining navigation in harbours and rivers, altering coastlines and winning material for landfill and construction purposes. As a single dredge may be required to maintain a throughput of 7000 tonnes of slurry per hour or more, very large centrifugal pumps are used. Figures 1-1 and 1-2 show, respectively, an exterior view of this type of pump, and a view of a large dredge-pump impeller (Addie & Helmley, 1989). The manufacture of fertiliser is another process involving massive slur- transport operations. Li Florida, phosphate matrix is recovered by huge draglines in open-pit mining operations. It is then slurried, and pumped to the wash plants through pipelines with a typical length of about 10 kilometres. Each year some 34 million tonnes of matrix are transported in this manner. This industry employs centrifugal pumps that are generally smaller than those used in large dredges, but impeller diameters up to 1. 4 m are common, and drive capacity is often in excess of 1000 kW. The transport distance is typically longer than for dredging applications, and Chapter 1 Figure LI. Testing a dredge pump at the GIW Hydraulic Laboratory Figure 1. 2. Impeller for large dredge pump 1. Introduction 3 hence a series of pumping stations is often used. Figure 1-3 shows a boost- pump installation in a phosphate pipeline.
