Download or read book Mathematical Model for Describing Stress Wave Propagation in a Jointed Rock Mass written by James L. Drake and published by . This book was released on 1973 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Model for Describing Stress Wave Propagation in a Jointed Rock Mass written by James J. Drake and published by . This book was released on 1973 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: A mathematical model that describes the effects of joints and fractures on the propagation of energy in a jointed rock mass was developed and verified with experimental evidence from seismic and nuclear tests. The model demonstrated that the average arrival time in a jointed medium is reduced from that in an unfractured rock by an amount related to the average number of joints encountered by the wave. It was also demonstrated that the mean-square fluctuations in the arrival times are directly related to the mean-square fluctuations in the joint density. Because the travel time and joint density statistics are directly related by the model developed in this study, carefully planned seismic tests can be used for exploration of the jointing. It is suggested that seismic surveys can be used to determine the competency of rock. An average time history of a propagating disturbance was calculated which includes the effects of jointing on an arbitrary pulse. A ground shock prediction formula was developed which includes the effect of joints on waves generated by contained explosions. (Modified author abstract).

Download or read book Rock Dynamics and Applications State of the Art written by Jian Zhao and published by CRC Press. This book was released on 2013-05-13 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock dynamics studies the response of rock materials and rock masses under dynamic loading conditions. In the last a couple of decades, the development of experimental and computational techniques has been able to capture the progress of fracturing in microsecond steps, allowing the exploration on how the fracture is initiated, propagated and branc

Download or read book Dynamic Web Programming and HTML5 written by Paul S. Wang and published by CRC Press. This book was released on 2012-11-21 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: With organizations and individuals increasingly dependent on the Web, the need for competent, well-trained Web developers and maintainers is growing. Helping readers master Web development, Dynamic Web Programming and HTML5 covers specific Web programming languages, APIs, and coding techniques and provides an in-depth understanding of the underlying concepts, theory, and principles. The author leads readers through page structuring, page layout/styling, user input processing, dynamic user interfaces, database-driven websites, and mobile website development. After an overview of the Web and Internet, the book focuses on the new HTML5 and its associated open Web platform standards. It covers the HTML5 markup language and DOM, new elements for structuring Web documents and forms, CSS3, and important JavaScript APIs associated with HTML5. Moving on to dynamic page generation and server-side programming with PHP, the text discusses page templates, form processing, session control, user login, database access, and server-side HTTP requests. It also explores more advanced topics such as XML and PHP/MySQL. Suitable for a one- or two-semester course at the advanced undergraduate or beginning graduate level, this comprehensive and up-to-date guide helps readers learn modern Web technologies and their practical applications. Numerous examples illustrate how the programming techniques and other elements work together to achieve practical goals. Online Resource Encouraging hands-on practice, the book’s companion website at http://dwp.sofpower.com helps readers gain experience with the technologies and techniques involved in building good sites. Maintained by the author, the site offers: Live examples organized by chapter and cross-referenced in the text Programs from the text bundled in a downloadable code package Searchable index and appendices Ample resource listings and information updates

Download or read book The Method of Characteristics for Stress Wave Propagation in the Rock Mass written by Lifeng Fan and published by Springer. This book was released on 2024-11-26 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written by subject experts based on the latest research results on the characteristic line method of stress wave propagation in rock masses. It establishes a framework for stress wave propagation analysis methods under three levels of rocks, joints and rock masses. It introduces the two-characteristic line method for stress wave propagation in rocks, and further illustrates the modified characteristic line method for stress wave propagation in complex jointed rock masses. The split three-characteristic line method was proposed for stress wave propagation in rock masses with macro-joints and micro-defects. The book focuses on the basic theory, and highlights the ideas, methods and steps to solve the problem of stress wave propagation in rock masses. This book can be used as a reference book for researchers of research institutes engaged in analyzing, predicting and controlling dynamic stability in rock, geological, and mining engineering. ​

Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1974 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements written by and published by . This book was released on 1974 with total page 1544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1990-05 with total page 1624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petroleum Abstracts written by and published by . This book was released on 1994 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Index written by and published by . This book was released on 1975 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1974 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book KWIC Index of Rock Mechanics Literature written by J P Jenkins and published by Elsevier. This book was released on 2016-06-03 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: KWIC Index of Rock Mechanics Literature, Part 2: 1969-1976 is an index of subjects in rock mechanics. The KWIC (keyword-in-context) index is produced by cyclic permutation of significant words in the title of the publication. The text covers materials in rock mechanics and geomechanics published around the 70s. The book will be of great use to students, researchers, and practitioners of geological sciences.

Download or read book International Symposium on Rock Fragmentation by Blasting written by and published by . This book was released on 1990 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Publications of the U S Army Engineer Waterways Experiment Station written by U.S. Army Engineer Waterways Experiment Station and published by . This book was released on 1975 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Union Catalog written by and published by . This book was released on 1982 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes entries for maps and atlases.

Download or read book Numerical Investigation of Joint Effect on Shock Wave Propagation in Jointed Rock Masses written by YY. Jiao and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: To investigate the joint effect on shock wave propagation and attenuation in jointed rock masses, a small-scale field explosion test is analyzed numerically by using the three-dimensional discrete element method (3D DEM) and the three-dimensional finite difference method (3D FDM). Results show that rock joints act as a kind of filter through which only low frequency shock waves are allowed to pass. This indicates that high frequency shock waves do no harm to far-field structures when they have to travel across joint sets with specific spacing. Results also reveal that the orientation of the joint sets can remarkably affect the amplitude and frequency composition of shock waves. Furthermore, as a discontinuous numerical method, 3D DEM can capture the main features of shock waves, and most importantly, it can simulate the 3D effect of rock joints. It can be concluded that in modelling 3D shock wave propagation and attenuation in jointed rock masses, 3D DEM has unique advantages over 2D modeling, 3D FDM, and even field testing.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1800 pages. Available in PDF, EPUB and Kindle. Book excerpt: