Hydraulic Fracturing In Earth Rock Fill Dams
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Hydraulic Fracturing In Earth Rock Fill Dams
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Author : Jun-Jie Wang
language : en
Publisher: John Wiley & Sons
Release Date : 2014-04-11
Hydraulic Fracturing In Earth Rock Fill Dams written by Jun-Jie Wang and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-04-11 with Technology & Engineering categories.
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.
Hydraulic Fracturing In Zoned Earth And Rockfill Dams
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Author : E. S. Nobari
language : en
Publisher:
Release Date : 1973
Hydraulic Fracturing In Zoned Earth And Rockfill Dams written by E. S. Nobari and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Dam failures categories.
The investigation involves two parts: first, an experimental investigation to study the phenomenon of hydraulic fracturing under carefully controlled laboratory conditions; and second, an analytical investigation to determine the conditions under which the stresses in the cores of zoned dams may be reduced sufficiently by arching so that hydraulic fracturing can occur. Analyses were also performed to examine the effectiveness of various countermeasures which can reduce the arching and the likelihood of hydraulic fracturing.
Earth And Rockfill Dams
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Author : Christian Kutzner
language : en
Publisher: Routledge
Release Date : 2018-02-06
Earth And Rockfill Dams written by Christian Kutzner and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-06 with Technology & Engineering categories.
This text methodically demonstrates the basic rules for the design criteria of earthfill and rockfill dams. It expertly guides the reader from preliminary work through the design of various embankment dams and on to the construction and finally the control of safety in completed structures.
Hydraulic Fracture In Earth And Rockfill Dams
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Author : Kaniaru, Kiny
language : en
Publisher: London : Geotechnical Research Centre, University of Western Ontario
Release Date : 1989
Hydraulic Fracture In Earth And Rockfill Dams written by Kaniaru, Kiny and has been published by London : Geotechnical Research Centre, University of Western Ontario this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Deformation Of Earth Rockfill Dams
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Author :
language : en
Publisher:
Release Date : 1977
Deformation Of Earth Rockfill Dams written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Earth dams categories.
Embankment Dams
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Author : James L. Sherard
language : en
Publisher:
Release Date : 1992
Embankment Dams written by James L. Sherard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Technology & Engineering categories.
Embankment Dams
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Author : United States. Bureau of Reclamation
language : en
Publisher:
Release Date : 1992
Embankment Dams written by United States. Bureau of Reclamation and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Dams categories.
Hydraulic Fracturing In Earth Dams
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Author : Samuel Yamoah Boakye
language : en
Publisher:
Release Date : 1984
Hydraulic Fracturing In Earth Dams written by Samuel Yamoah Boakye and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Earth dams categories.
Seepage And Leakage From Dams And Impoundments
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Author : Richard L. Volpe
language : en
Publisher:
Release Date : 1985
Seepage And Leakage From Dams And Impoundments written by Richard L. Volpe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Technology & Engineering categories.
Darcy's Law has been used by civil engineers for problems involving saturated flow, especially for the design of water retention dams. There has been a class of problems that deal with partially saturated leakage from waste impoundments has evolved. This can pose environmental hazards if the leachate is toxic, and is not collected and treated.
New Developments In Dam Engineering
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Author : Martin Wieland
language : en
Publisher: CRC Press
Release Date : 2014-05-14
New Developments In Dam Engineering written by Martin Wieland and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-14 with Technology & Engineering categories.
The development of water resources is a key element in the socio-economic development of many regions in the world. Water availability and rainfall are unequally distributed both in space and time, so dams play a vital role, there being few viable alternatives for storing water. Dams hold a prime place in satisfying the ever-increasing demand for power, irrigation and drinking water, for protection of man, property and environment from catastrophic floods, and for regulating the flow of rivers. Dams have contributed to the development of civilization for over 2,000 years. Worldwide there are some 45,000 large dams listed by ICOLD, which have a height over 15 meters. Today, in western countries, where most of the water resources have been developed, the safety of the existing dams and measures for extending their economical life are of prime concern. In developing countries the focus is on the construction of new dams. The proceedings of the 4th International Conference on Dam Engineering includes contributions from 18 countries, and provides an overview of the state-of-the-art in hydropower development, new type dams, new materials and new technologies, dam and environment. Traditional areas, such as concrete dams and embankment dams, methods of analysis and design of dams, dam foundation, seismic analysis, design and safety, stability of dam and slope, dam safety monitoring and instrumentation, dam maintenance, and rehabilitation and heightening are also considered. The book is of special interest to scientists, researchers, engineers, and students working in dam engineering, dam design, hydropower development, environmental engineering, and structural hydraulics.
