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Author : American Society of Civil Engineers
Publisher :
ISBN 13 :
Total Pages : 163 pages
Book Rating : 4.:/5 (72 download)
Download or read book Dynamic Stability of Tailings Dams written by American Society of Civil Engineers and published by . This book was released on 1982 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Donald Anderson
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (636 download)
Download or read book Dynamic Stability of Tailings Dams written by Donald Anderson and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James George Athanasakes
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (169 download)
Download or read book Dynamic Stability Analysis of a Tailings Impoundment Dam written by James George Athanasakes and published by . This book was released on 1987 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ishii, Noriaki
Publisher : IGI Global
ISBN 13 : 1522530800
Total Pages : 677 pages
Book Rating : 4.5/5 (225 download)
Download or read book Dynamic Stability of Hydraulic Gates and Engineering for Flood Prevention written by Ishii, Noriaki and published by IGI Global. This book was released on 2017-08-11 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic gates are utilized in multiple capacities in modern society. As such, the failure of these gates can have disastrous consequences, and it is imperative to develop new methods to avoid these occurrences. Dynamic Stability of Hydraulic Gates and Engineering for Flood Prevention is a critical reference source containing scholarly research on engineering techniques and mechanisms to decrease the failure rate of hydraulic gates. Including a range of perspectives on topics such as fluid dynamics, vibration mechanisms, and flow stability, this book is ideally designed for researchers, academics, engineers, graduate students, and practitioners interested in the study of hydraulic gate structure.
Author : Sajjad Salam
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (119 download)
Download or read book Cyclic Behavior of Fine Coal Refuse and Seismic Stability of Coal Tailings Dams written by Sajjad Salam and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal has been one of the main sources of energy in the world. The coal waste that is produced through coal extraction and processing is typically stored in form of slurry in tailings impoundments. The static and dynamic stability of these impoundments are of great importance, as their failure can result in significant spill, loss of human lives, and damages to the environment and infrastructure. The main objectives of this research were to (1) characterize the static and dynamic geotechnical properties of fine coal refuse (FCR), (2) investigate the cyclic behavior and liquefaction resistance of FCR and influencing factors such as strain history and aging, and (3) numerically assess the seismic stability of coal tailings dams incorporating the heterogeneity on FCR deposit in the field. To characterize the static and dynamic geotechnical properties of in situ FCR samples, representative FCR samples were taken from two coal slurry impoundments in the Appalachian coalfields in the USA. Standard penetration tests (SPT) were conducted in the field. Index properties, hydraulic conductivity, and classification of FCR were determined. Staged triaxial tests under consolidated undrained (CU) state and consolidated drained (CD) state were conducted to assess short-term and long-term shear behavior of FCR, respectively. Torsional resonant column tests were performed to determine shear stiffness properties of FCR. Cyclic direct simple shear (DSS) tests followed by static shearing were adopted to evaluate the cyclic and post-cyclic behavior of FCR under various cyclic stress ratios (CSR). To overcome the shortcomings of element testing methods, large-scale shake table testing was conducted. Furthermore, the effects of strain history and short-period aging on cyclic response and liquefaction resistance of FCR were investigated. The FCR specimen was slurry-deposited in a membrane-lined laminar shear box (LxWxH: 2.29 m x 2.13 m x 1.4 m). The FCR specimen was subjected to three shaking events. Instruments including piezometers and linear variable differential transformers (LVDTs) were used to measure the FCR's dynamic response during shaking. A piezocone penetrometer (CPTu) was used to measure soil resistance and estimate cyclic behavior of the FCR specimen before and after each shaking test for time intervals up to 97 days. The cyclic behavior, liquefaction resistance, aging rate, and strength gain within the FCR were studied and compared with those of clean sands. Dynamic loadings such as earthquakes and blasting are among the main threats to the stability of tailings dams. Seismic stability analyses of tailings dams are further challenged by the uncertainty and variability of tailings properties. The influence of input motion characteristics and spatial variability in coal tailings (CT) properties on the seismic stability of a typical upstream-construction CT dam was investigated. First, the applicability of two advanced constitutive plasticity models, PM4Sand and PM4Silt, in simulating the cyclic behavior of CT was evaluated and a suitable model was selected. The undrained shear strength of CT was modeled as a spatially correlated Gaussian random field. Six input motions representing a variety of peak ground accelerations (PGA), equivalent number of cycles (ENC), and frequency content were selected for the dynamic analyses. The seismic stability of the CT dam with uniform properties (i.e. uniform models) was compared to the stochastic models. The uncertainty in seismic response of the studied dam caused by spatial variability in geotechnical properties was investigated. The necessity of post-seismic stability analysis in CT dams was discussed. The influencing factors on the seismic stability of CT dams were also characterized.
Author : David Wilson
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (41 download)
Download or read book Design and Construction of Tailings Dams written by David Wilson and published by . This book was released on 1981 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : N.P. López-Acosta
Publisher : IOS Press
ISBN 13 : 1643680331
Total Pages : 458 pages
Book Rating : 4.6/5 (436 download)
Download or read book From Research to Applied Geotechnics written by N.P. López-Acosta and published by IOS Press. This book was released on 2019-11-26 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first Pan-American Conference on Soil Mechanics and Geotechnical Engineering (PCSMGE) was held in Mexico in 1959. Every 4 years since then, PCSMGE has brought together the geotechnical engineering community from all over the world to discuss the problems, solutions and future challenges facing this engineering sector. Sixty years after the first conference, the 2019 edition returns to Mexico. The XVI PCSMGE 2019 conference was held in Cancun, Mexico, from 17 – 20 November 2019. This book presents the plenary lectures from the conference, delivered by distinguished geotechnical engineers of international renown. Experience and youth combine in this special publication, which includes the 9th Arthur Casagrande lecture, the plenary lecture of the ISSMGE President, 3 Bright Spark lectures, and the manuscripts of the 13 invited lecturers of practically all the technical sessions at the XVI PCSMGE 2019. Topics cover both research and applied geotechnics, including recent developments in geotechnical engineering. Representing a valuable reference for engineering practitioners and graduate students, and helping to identify new issues and shape future directions for research, the book will be of interest to all those working in the field, involved in soil mechanics and geotechnical engineering.
Author :
Publisher : Allied Publishers
ISBN 13 : 9788177645002
Total Pages : 348 pages
Book Rating : 4.6/5 (45 download)
Download or read book Proceedings Geomechanics and Ground Control written by and published by Allied Publishers. This book was released on with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B. H. Conlin
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (11 download)
Download or read book Background Information on Stability of Tailings Dams and Related Structures written by B. H. Conlin and published by . This book was released on 1979 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Energy and the Environment
Publisher :
ISBN 13 :
Total Pages : 742 pages
Book Rating : 4.F/5 ( download)
Download or read book Uranium Mill Tailings Control written by United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Energy and the Environment and published by . This book was released on 1978 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bahram Khamenehpour
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (29 download)
Download or read book Seismic Stability Problems in Earth Dam Design written by Bahram Khamenehpour and published by . This book was released on 1983 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zbigniew Zembaty
Publisher : Springer
ISBN 13 : 3319142461
Total Pages : 347 pages
Book Rating : 4.3/5 (191 download)
Download or read book Seismic Behaviour and Design of Irregular and Complex Civil Structures II written by Zbigniew Zembaty and published by Springer. This book was released on 2015-11-04 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Irregular engineering structures are subjected to complicated additional loads which are often beyond conventional design models developed for traditional, simplified plane models. This book covers detailed research and recent progress in seismic engineering dealing with seismic behaviour of irregular and set-back engineering structures. Experimental results as well as special topics of modern design are discussed in detail. In addition, recent progress in seismology, wave propagation and seismic engineering, which provides novel, modern modelling of complex seismic loads, is reported. Particular emphasis is placed on the newly developed rotational, seismic ground-motion effects. This book is a continuation of an earlier monograph which appeared in the same Springer series in 2013 (http://www.springer.com/gp/book/9789400753761).
Author : Delwyn G. Fredlund
Publisher : John Wiley & Sons
ISBN 13 : 1118280504
Total Pages : 946 pages
Book Rating : 4.1/5 (182 download)
Download or read book Unsaturated Soil Mechanics in Engineering Practice written by Delwyn G. Fredlund and published by John Wiley & Sons. This book was released on 2012-07-30 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive guide to unsaturated soil— from the world's experts on the subject This book builds upon and substantially updates Fredlund and Rahardjo's publication, Soil Mechanics for Unsaturated Soils, the current standard in the field of unsaturated soils. It provides readers with more thorough coverage of the state of the art of unsaturated soil behavior and better reflects the manner in which practical unsaturated soil engineering problems are solved. Retaining the fundamental physics of unsaturated soil behavior presented in the earlier book, this new publication places greater emphasis on the importance of the "soil-water characteristic curve" in solving practical engineering problems, as well as the quantification of thermal and moisture boundary conditions based on the use of weather data. Topics covered include: Theory to Practice of Unsaturated Soil Mechanics Nature and Phase Properties of Unsaturated Soil State Variables for Unsaturated Soils Measurement and Estimation of State Variables Soil-Water Characteristic Curves for Unsaturated Soils Ground Surface Moisture Flux Boundary Conditions Theory of Water Flow through Unsaturated Soils Solving Saturated/Unsaturated Water Flow Problems Air Flow through Unsaturated Soils Heat Flow Analysis for Unsaturated Soils Shear Strength of Unsaturated Soils Shear Strength Applications in Plastic and Limit Equilibrium Stress-Deformation Analysis for Unsaturated Soils Solving Stress-Deformation Problems with Unsaturated Soils Compressibility and Pore Pressure Parameters Consolidation and Swelling Processes in Unsaturated Soils Unsaturated Soil Mechanics in Engineering Practice is essential reading for geotechnical engineers, civil engineers, and undergraduate- and graduate-level civil engineering students with a focus on soil mechanics.
Author : Muhammad Auchar Zardari
Publisher :
ISBN 13 : 9789174392456
Total Pages : 16 pages
Book Rating : 4.3/5 (924 download)
Download or read book Stability of Tailings Dams written by Muhammad Auchar Zardari and published by . This book was released on 2011 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upstream tailings dams may experience slope stability problems when the rate of raising is too fast. Tailings consolidate slowly due to low hydraulic conductivity. The excess pore pressures can build up due to accelerated rate of raising. The cumulative increase in excess pore pressures due to successive raisings can endanger slope stability of a tailings dam. The stability of a tailings dam is closely related to the consolidation process. The consolidation process and associated stability of an upstream tailings dam during staged construction was modelled with the finite element program PLAXIS. The analysis indicated that the stability of the dam reduced during raising due to increase of excess pore pressures. The safety of the dam was improved by adding rockfill banks on the downstream side. The volume of the rockfill banks was minimized with an optimization technique. This technique involves (i) construction of a rockfill bank on the downstream side when the factor of safety is less than a permissible limit, (ii) utilization of a minimum volume of the rockfill that is necessary to stabilize the slope. This technique can be practicable when the rate of raising is moderate, and partial consolidation occurs between consecutive raisings. Numerical analysis was also performed on a curved embankment of an upstream tailings dam in order to investigate the possible risk of hydraulic fracturing and internal erosion in a corner of the dam. The analysis showed that low compressive stresses occurred above the phreatic level, near the zones of filter and rockfill banks. These zones contain coarse material, and are, therefore, not susceptible to hydraulic fracturing and internal erosion. An increase in the radius of the corner is suggested in order to prevent large reductions in compressive stresses that may occur due to future raisings. Presently the curved dam section is stable. However, an additional rockfill bank on the downstream side will be required for future raisings. Static liquefaction is considered as a common cause of disastrous flow failures of tailings dams. These flow failures can be predicted with numerical modelling using suitable constitutive models. In this context, some constitutive models capable of simulating static liquefaction behaviour of loose saturated sands are reviewed. It is generally concluded that the finite element method can be a helpful tool for modelling stability of tailings dams.
Author : R.C.Y. Lo
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (113 download)
Download or read book Dynamic Analysis of Sandfill Tailings Dams written by R.C.Y. Lo and published by . This book was released on 1977 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : United Nations Publications
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.F/5 ( download)
Download or read book Tailings Dams written by and published by United Nations Publications. This book was released on 2001 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tailings are the residue of the milling process for extracting metals for ore. They are mostly commonly dumped in surface impoundments (tailing dams), the embankments of which are usually earthfilled dams. In spite of a number of guidelines to their design and construction there are still major failings each year. This book gathers together 221 case records of incidents in attempt to investigate the causes of failure. The main causes were found to be lack of control of water balance, lack of control of construction, lack of understanding of the feature that control safe operation
Author : Haijun Qiu
Publisher : Frontiers Media SA
ISBN 13 : 2832514774
Total Pages : 167 pages
Book Rating : 4.8/5 (325 download)
Download or read book Monitoring, early warning and mitigation of natural and engineered slopes written by Haijun Qiu and published by Frontiers Media SA. This book was released on 2023-02-15 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt:
