Download or read book Hydraulic Fracturing in Earth rock Fill Dams written by Jun-Jie Wang and published by John Wiley & Sons. This book was released on 2014-08-11 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Hydraulic Fracture in Earth and Rockfill Dams written by Kaniaru, Kiny and published by London : Geotechnical Research Centre, University of Western Ontario. This book was released on 1989 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydraulic Fracturing in Zoned Earth and Rockfill Dams written by E. S. Nobari and published by . This book was released on 1973 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Hydraulic Fracturing in Earth rock Fill Dams written by Jun-Jie Wang and published by John Wiley & Sons. This book was released on 2014-04-11 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Earth and Rockfill Dams written by Christian Kutzner and published by Routledge. This book was released on 2018-02-06 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Hydraulic Fracturing in Earth Dams written by Samuel Yamoah Boakye and published by . This book was released on 1984 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physical Modelling in Geotechnics Two Volume Set written by Sarah Springman and published by CRC Press. This book was released on 2010-06-17 with total page 1522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book results from the 7th ICPMG meeting in Zurich 2010 and covers a broad range of aspects of physical modelling in geotechnics, linking across to other modelling techniques to consider the entire spectrum required in providing innovative geotechnical engineering solutions.Topics presented at the conference:Soil - Structure - Interaction;
Download or read book Hydraulic Structures written by Sheng-Hong Chen and published by Springer. This book was released on 2015-06-09 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses in detail the planning, design, construction and management of hydraulic structures, covering dams, spillways, tunnels, cut slopes, sluices, water intake and measuring works, ship locks and lifts, as well as fish ways. Particular attention is paid to considerations concerning the environment, hydrology, geology and materials etc. in the planning and design of hydraulic projects. It also considers the type selection, profile configuration, stress/stability calibration and engineering countermeasures, flood releasing arrangements and scouring protection, operation and maintenance etc. for a variety of specific hydraulic structures. The book is primarily intended for engineers, undergraduate and graduate students in the field of civil and hydraulic engineering who are faced with the challenges of extending our understanding of hydraulic structures ranging from traditional to groundbreaking, as well as designing, constructing and managing safe, durable hydraulic structures that are economical and environmentally friendly.
Download or read book Advances in Water Resources Hydraulic Engineering written by Changkuan Zhang and published by Springer Science & Business Media. This book was released on 2010-07-28 with total page 2335 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Advances in Water Resources and Hydraulic Engineering - Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS" discusses some serious problems of sustainable development of human society related to water resources, disaster caused by flooding or draught, environment and ecology, and introduces latest research in river engineering and fluvial processes, estuarine and coastal hydraulics, hydraulic structures and hydropower hydraulics, etc. The proceedings covers new research achievements in the Asian-Pacific region in water resources, environmental ecology, river and coastal engineering, which are especially important for developing countries all over the world. This proceedings serves as a reference for researchers in the field of water resources, water quality, water pollution and water ecology. Changkuan Zhang and Hongwu Tang both are professors at Hohai University, China.
Download or read book Hydraulic Fracture in Clays and Its Relation to the Performance of Earth Dams written by Mohamed Sief El Din Khorshid and published by . This book was released on 1974 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 7th International Conference on Discrete Element Methods written by Xikui Li and published by Springer. This book was released on 2016-12-01 with total page 1414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest advances in Discrete Element Methods (DEM) and technology. It is the proceeding of 7th International Conference on DEM which was held at Dalian University of Technology on August 1 - 4, 2016. The subject of this book are the DEM and related computational techniques such as DDA, FEM/DEM, molecular dynamics, SPH, Meshless methods, etc., which are the main computational methods for modeling discontinua. In comparison to continua which have been already studied for a long time, the research of discontinua is relatively new, but increases dramatically in recent years and has already become an important field. This book will benefit researchers and scientists from the academic fields of physics, engineering and applied mathematics, as well as from industry and national laboratories who are interested in the DEM.
Download or read book Geomechanics and Geotechnics of Particulate Media written by Masayuki Hyodo and published by CRC Press. This book was released on 2017-12-14 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microscopic re-examination of geomaterials consisting of aggregates can shed light on macroscopic behaviour, including compressibility, anisotropy, yielding, creep, cyclic liquefaction and shear rupture. As a result of this process of examination, new methods of material characterization emerge, leading to a greater degree of accuracy in the specification of new constitutive models with physically-meaningful parameters. The impetus behind this development is an increasing awareness on sustainability, leading to the more efficient use of recycled materials for geotechnical applications. The characteristics of recycled materials, such as compressibility and self-hardening, may differ significantly from those of natural materials, and it is crucial that evaluation is made from a specifically particulate perspective.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1985 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Dam Analysis written by Max A. M. Herzog and published by Thomas Telford. This book was released on 1999 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book presents simple approximate methods of analysing embankment, gravity and arch dams for design studies, preliminary designs, estimates of quantities, checking computational methods, and teaching. - Emphasis is placed on understanding the mechanical behaviour of the dam rather than the computational details."--BOOK JACKET.
Download or read book Hydraulic Fractures in Earth Embankment Dams written by Joseph Ademola Adesina and published by . This book was released on 1982 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dam Failure Mechanisms and Risk Assessment written by Limin Zhang and published by John Wiley & Sons. This book was released on 2016-06-13 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book integrates the physical processes of dam breaching and the mathematical aspects of risk assessment in a concise manner • The first book that introduces the causes, processes and consequences of dam failures • Integrates the physical processes of dam breaching and the mathematical aspects of risk assessment in a concise manner • Emphasizes integrating theory and practice to better demonstrate the application of risk assessment and decision methodologies to real cases • Intends to formulate dam-breaching emergency management steps in a scientific structure
Download or read book Geotechnical Engineering of Dams written by Robin Fell and published by CRC Press. This book was released on 2005-01-10 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geotechnical Engineering of Dams provides a comprehensive text on the geotechnical and geological aspects of the investigations for and the design and construction of new dams. In addition, much attention is paid to the review and assessment of existing dams. The main emphasis of this work is on embankment dams, but much of the text, particularly t
