Download or read book Evaluation of a Continuum Model for Jointed Rock Mass written by Jitendra Mohan Avasthi and published by . This book was released on 1972 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of a 3D Equivalent Continuum Model for Deformation Analysis of Systematically Jointed Rock Masses written by Alireza Agharazi and published by . This book was released on 2013 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deformability of jointed rock masses are potentially anisotropic and non-linear due to existence of the discontinuities intersecting the rock matrix. Models to analysis the deformation of jointed rock masses are divided into two main categories: discontinuum models and equivalent continuum models. Discontinuum models treat the rock mass as an assemblage of intact rock blocks interacting at their boundaries. Discontinuities are simulated explicitly using appropriate contact models. However, when the number of discontinuities in a model increases, the explicit definition of discontinuities become difficult and, in some cases, impractical. Equivalent continuum models provide an alternative to discontinuum models for such cases. In these models, the behaviour of a jointed rock mass is approximated by the analysis of its equivalent continuum. The discontinuities are taken into account implicitly, either by implementing proper constitutive relations or by adopting appropriate mechanical parameters. In this research, the principal deformation mechanisms for a jointed rock mass are defined and characterized by the detailed analysis of the results of a series of plate loading tests conducted on the rock mass. A new three dimensional equivalent continuum model, the JointedRock model, is formulated to simulate the observed deformation mechanisms. The constitutive equations are presented in a tensor form so the model can be applied for any arbitrary spatial configuration of discontinuities. A Mohr-Coulomb failure criterion is used to check failure of intact rock blocks and slip along the rock joints. The JointedRock model is implemented in the finite difference code FLAC3D and is verified against the distinct element method (3DEC) and, where available, analytical solutions. A new method is proposed for interpretation of the results of plate loading tests conducted on jointed rock masses. The method is used to interpret the results of the study tests and to determine the anisotropic deformation modulus of the rock mass.

Download or read book Strength And Deformation Behaviour Of Jointed Rocks written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Most rock masses encountered in civil and mining engineering projects contain pre-existing discontinuities. These discontinuities weaken the rock masses to an extent, which depends very much on the size of engineering structure relation to discontinuity spacing. The strength and deformability of rock mass is controlled not only by the intact portion of rock, but by the characteristic of the joints that break up the mass, particularly their pattern and their orientation with respect to the in-situ stresses. In considering the effect of joints, the discrete approach emerged as an efficient tool and advocated since 1970s (Cundall, 1971). However, the numerical approach with modelling the joints explicitly has the limitation of computational complexity for modelling large-scale problems with extremely large number of joints. As an alternative to this limitation, the equivalent continuum approach models the jointed rock masses as a continuum with the equivalent properties that represent implicitly the effects of the joints. Several numerical methods have been developed by various researchers to model jointed rock masses as equivalent continuum, using various techniques. However, the existing equivalent continuum models are complicated and need more input data from experimental or field testing in order to carry out the analysis. Present approach attempts to use statistical relations, which are simple and obtained after analyzing a large data from the literature on laboratory test results of jointed rock masses. Systematic investigations were done including laboratory experiments to develop the methodologies to determine the equivalent material properties of rock mass and their stress-strain behaviour, using a hyperbolic approach (Duncan and Chang, 1970). Present study covers the development of equivalent continuum model for rock mass right from developing statistical correlations to find out equivalent material properties based on experimental results, to the implementat.

Download or read book Linear Load transfer Mechanics of Fully Grouted Roof Bolts written by Maynard O. Serbousek and published by . This book was released on 1987 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rock Mechanics and Engineering Volume 3 written by Xia-Ting Feng and published by CRC Press. This book was released on 2017-04-21 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis, Modeling & Design is the third volume of the five-volume set Rock Mechanics and Engineering and contains twenty-eight chapters from key experts in the following fields: - Numerical Modeling Methods; - Back Analysis; - Risk Analysis; - Design and Stability Analysis: Overviews; - Design and Stability Analysis: Coupling Process Analysis; - Design and Stability Analysis: Blast Analysis and Design; - Rock Slope Stability Analysis and Design; - Analysis and Design of Tunnels, Caverns and Stopes. The five-volume set “Comprehensive Rock Engineering”, which was published in 1993, has had an important influence on the development of rock mechanics and rock engineering. Significant and extensive advances and achievements in these fields over the last 20 years now justify the publishing of a comparable, new compilation. Rock Mechanics and Engineering represents a highly prestigious, multi-volume work edited by Professor Xia-Ting Feng, with the editorial advice of Professor John A. Hudson. This new compilation offers an extremely wideranging and comprehensive overview of the state-of-the-art in rock mechanics and rock engineering and is composed of peer-reviewed, dedicated contributions by all the key experts worldwide. Key features of this set are that it provides a systematic, global summary of new developments in rock mechanics and rock engineering practices as well as looking ahead to future developments in the fields. Contributors are worldrenowned experts in the fields of rock mechanics and rock engineering, though younger, talented researchers have also been included. The individual volumes cover an extremely wide array of topics grouped under five overarching themes: Principles (Vol. 1), Laboratory and Field Testing (Vol. 2), Analysis, Modelling and Design (Vol. 3), Excavation, Support and Monitoring (Vol. 4) and Surface and Underground Projects (Vol. 5). This multi-volume work sets a new standard for rock mechanics and engineering compendia and will be the go-to resource for all engineering professionals and academics involved in rock mechanics and engineering for years to come.

Download or read book Numerical Modeling Of Jointed Rock Mass written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The behavior of jointed rock mass is very complex and is influenced by many factors such as location of joints, joint frequency, joint orientation and joint strength. A thorough review of literature on different aspects of jointed rock mass indicate that the discontinuities or planes of weakness present in rock mass significantly influence its behavior. Numerous experimental tests were conducted to study the behavior of natural as well as artificial joints in rocks. Laboratory tests are time consuming and give results applicable to specific joint fabric and confining pressure. Numerical methods are the best alternative to laboratory tests to study the behavior of jointed rock mass. With the advent of computers numerical methods of analysis have become very popular, as they are highly flexible and can represent all complex geometries and material behavior. The accuracy of a numerical model depends upon the how well constitutive relations for the jointed rock mass are defined in the analysis. Empirical relationships for describing the mechanical behavior of discontinuities obtained from scaling the laboratory data is crucial unresolved problem, which will affect the quality of results obtained. One more important aspect in the numerical model is strength criteria used for jointed rock mass. The applicability of existing strength criteria to a particular jointed rock has to be carefully examined before they are used. Equivalent continuum approach simplifies the modeling of jointed rock mass as the joints are not modeled separately. Instead in equivalent continuum approach the jointed rock mass is represented by an equivalent continuum whose properties are defined by a combination of intact rock properties and joint properties. The accuracy of this kind of modeling depends upon the relationships used to define the jointed rock mass properties as a function of intact rock properties and joint properties. In the present study, an effort has been made (i) to establish empi.

Download or read book Stability Analysis and Modelling of Underground Excavations in Fractured Rocks written by Jian Zhao and published by Elsevier. This book was released on 2003-12-18 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides practical solutions to the challenge of modeling and analyzing rock masses Consolidates a wealth of previously published technical papers on the subject and introduces previously unseen material This authoritative title is a key reference for any Geo-engineer. Rock masses differ considerably from man-made materials, and their properties can vary with location, direction and time. As a result there is a critical need to capture these variations via modeling and analysis. Zhu and Zhao provide an expert introduction to the techniques and analytical methods needed for studying underground excavations in fractured rock masses. The book brings together previously published and new material to provide a comprehensive and up-to-date reference. Provides practical solutions to the challenge of modeling and analyzing rock masses Consolidates a wealth of previously published technical papers on the subject and introduces previously unseen material

Download or read book Mechanics of Jointed and Faulted Rock written by Hans Peter Rossmanith and published by CRC Press. This book was released on 2020-12-18 with total page 1848 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the implementation and application of new concepts and methods to modelling, analysis, building, performance control and repair of structures of and in jointed rock and rock masses. It provides a forum for presentation of new research results and discussion for researchers.

Download or read book Analysis and Design Methods written by Catherine Fairhurst and published by Elsevier. This book was released on 2014-06-28 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis and Design Methods

Download or read book Rock Mechanics in Underground Construction written by C. F. Leung and published by World Scientific. This book was released on 2006 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume contains over 300 papers on rock mechanics and engineering with contributors from all over Asia and many other parts of the world. Seven keynote papers summarize the state-of-the-art in rock engineering including topics such as underground rock caverns. The technical papers cover a wide range of rock mechanics and engineering topics: rock tunnels, caverns, mining, rock slopes and dams, rock blasting, rock burst and failure, rock properties, rock mass, rock joints, and block theory. Numerous valuable rock engineering case studies are also reported. This volume should serve as a useful reference for the engineers and researchers in rock mechanics and rock engineering. Sample Chapter(s). Chapter 1: Forensic Engineering for Underground Construction (244 KB). Contents: Tunnelling; Rock Caverns; Mining; Blasting and Dynamics; Support and Reinforcement; Rock Mass; Rock Properties; Discontinuities; Block Theory and DDA; Failure, Fracture and Burst; Dams and Slopes; Other Applications. Readership: Graduate students, academics and researchers in civil engineering and engineering mechanics.

Download or read book The Joint Empirical Model an Equivalent Continuum Model for Jointed Rock Masses written by M.L. Blanford and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface and Underground Project Case Histories written by E. Hoek and published by Elsevier. This book was released on 2016-09-08 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface and Underground Project Case Histories

Download or read book Rock Mechanics in Civil and Environmental Engineering written by Jian Zhao and published by CRC Press. This book was released on 2010-05-19 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last two decades rock mechanics in Europe has been undergoing some major transformation. The reduction of mining activities in Europe affects heavily on rock mechanics teaching and research at universities and institutes. At the same time, new emerging activities, notably, underground infrastructure construction, geothermal energy develo

Download or read book Excavation Support and Monitoring written by J.A. Hudson and published by Elsevier. This book was released on 2016-04-06 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approx.850 pages

Download or read book Proceedings of the Indian Geotechnical Conference 2022 Volume 5 written by Babu T. Jose and published by Springer Nature. This book was released on with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rock Mechanics and Engineering Volume 5 written by Xia-Ting Feng and published by CRC Press. This book was released on 2017-07-20 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface and Underground Projects is the last volume of the five-volume set Rock Mechanics and Engineering and contains twenty-one chapters from key experts in the following fields: - Slopes; - Tunnels and Caverns; - Mining; - Petroleum Engineering; - Thermo-/Hydro-Mechanics in Gas Storage, Loading and Radioactive Waste Disposal. The five-volume set “Comprehensive Rock Engineering”, which was published in 1993, has had an important influence on the development of rock mechanics and rock engineering. Significant and extensive advances and achievements in these fields over the last 20 years now justify the publishing of a comparable, new compilation. Rock Mechanics and Engineering represents a highly prestigious, multi-volume work edited by Professor Xia-Ting Feng, with the editorial advice of Professor John A. Hudson. This new compilation offers an extremely wideranging and comprehensive overview of the state-of-the-art in rock mechanics and rock engineering and is composed of peer-reviewed, dedicated contributions by all the key experts worldwide. Key features of this set are that it provides a systematic, global summary of new developments in rock mechanics and rock engineering practices as well as looking ahead to future developments in the fields. Contributors are worldrenowned experts in the fields of rock mechanics and rock engineering, though younger, talented researchers have also been included. The individual volumes cover an extremely wide array of topics grouped under five overarching themes: Principles (Vol. 1), Laboratory and Field Testing (Vol. 2), Analysis, Modelling and Design (Vol. 3), Excavation, Support and Monitoring (Vol. 4) and Surface and Underground Projects (Vol. 5). This multi-volume work sets a new standard for rock mechanics and engineering compendia and will be the go-to resource for all engineering professionals and academics involved in rock mechanics and engineering for years to come.

Download or read book Numerical Models in Geomechanics written by G.N. Pande and published by CRC Press. This book was released on 2020-12-17 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume a number of developments on a variety of topics have been reported. These topics include: partially saturated soil; instabilities in soil behaviour; environmental geomechanics; parallel computing; and applications to tunnels, embankments, slopes, foundations and anchors.