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 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 Mechanics of Jointed and Faulted Rock written by H.P. Rossmanith and published by CRC Press. This book was released on 2020-12-17 with total page 1011 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 Rock Dynamics From Research to Engineering written by Haibo Li and published by CRC Press. This book was released on 2016-04-19 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock Dynamics: From Research to Engineering is a collection of the scientic and technical papers presented at the Second International Conference on Rock Dynamics and Applications (RocDyn-2, Suzhou, China, 18-19 May 2016). The book has four sections. The first section contains 8 keynote papers, covering a wide range of dynamic issues related to roc

Download or read book Numerical Studies on 2 D Compressional Wave Propagation in Jointed Rock Masses written by Weidong Lei and published by . This book was released on 2005 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 2022 12th International Conference on Environment Science and Engineering ICESE 2022 written by Xueming Chen and published by Springer Nature. This book was released on 2023-03-24 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book consists of selected and presented papers from the 2022 12th International Conference on Environment Science and Engineering (ICESE 2022), which was held in Beijing, China, during September 2–5, 2022. The conference brought together innovative academicians and industrial experts in the field of environmental science and engineering in a common forum to promote their research and developmental activities. It also facilitated interchanging scientific information between researchers, developers, engineers, students, and practitioners working abroad. The book includes topics such as environmental sustainability, sustainable cities, environmental restoration and ecological engineering, water resources and river basin management, water treatment and reclamation, air pollution and control, atmospheric physics, carbon capture and storage, waste minimization, and resource management, among others. This book is a valuable reference for those who work in these fields in academia and industry.

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 Equivalent Continuum Modeling for Shock Wave Propagation in Jointed Media written by and published by . This book was released on 2009 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study presents discrete and continuum simulations of shock wave propagating through jointed media. The simulations were performed using the Lagrangian hydrocode GEODYN-L with joints treated explicitly using an advanced contact algorithm. They studied both isotropic and anisotropic joint representations. For an isotropically jointed geologic medium, the results show that the properties of the joints can be combined with the properties of the intact rock to develop an equivalent continuum model suitable for analyzing wave propagation through the jointed medium. For an anisotropically jointed geologic medium, they found it difficult to develop an equivalent continuum (EC) model that matches the response derived from mesoscopic simulation. They also performed simulations of wave propagation through jointed media. Two appraoches are suggested for modeling the rock mass. In one approach, jointed are modeled explicitly in a Lagrangian framework with appropriate contact algorithms used to track motion along the interfaces. In the other approach, the effect of joints is taken into account using a constitutive model derived from mesoscopic simulations.

Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theoretical and Numerical Analyses of Wave Propagation in Jointed Rock Masses written by Jianbo Zhu and published by . This book was released on 2011 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1983 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanics of Jointed and Faulted Rock written by H.P. Rossmanith and published by Routledge. This book was released on 2018-04-27 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topics covered in this text include: geology and structural geology; mechanics; dynamics of jointed and faulted rock; physical modelling and testing; constitutive modelling; seismicity and tectonics; instrumentation; hydraulics; and applications.

Download or read book Characterization and Interpretation of Rock Mass Joint Patterns written by P. R. La Pointe and published by Geological Society of America. This book was released on 1985 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scale Effects in Rock Masses 93 written by A. Pinto da Cunha and published by CRC Press. This book was released on 2020-09-10 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 2nd International Scale Effects in Rock Masses, held in Lisbon, June 25, 1993. The text includes coverage of scale effects in the determination of the deformability and strength of rock masses and scale effects in the determination of internal rock masses.

Download or read book XAFS for Everyone written by Scott Calvin and published by CRC Press. This book was released on 2013-05-20 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: XAFS for Everyone provides a practical, thorough guide to x-ray absorption fine-structure (XAFS) spectroscopy for both novices and seasoned practitioners from a range of disciplines. The text is enhanced with more than 200 figures as well as cartoon characters who offer informative commentary on the different approaches used in XAFS spectroscopy. The book covers sample preparation, data reduction, tips and tricks for data collection, fingerprinting, linear combination analysis, principal component analysis, and modeling using theoretical standards. It describes both near-edge (XANES) and extended (EXAFS) applications in detail. Examples throughout the text are drawn from diverse areas, including materials science, environmental science, structural biology, catalysis, nanoscience, chemistry, art, and archaeology. In addition, five case studies from the literature demonstrate the use of XAFS principles and analysis in practice. The text includes derivations and sample calculations to foster a deeper comprehension of the results. Whether you are encountering this technique for the first time or looking to hone your craft, this innovative and engaging book gives you insight on implementing XAFS spectroscopy and interpreting XAFS experiments and results. It helps you understand real-world trade-offs and the reasons behind common rules of thumb.

Download or read book Experimental and Numerical Studies of Shock Wave Propagation in a Geomedium written by Vilem Petr and published by . This book was released on 2001 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rock Fragmentation by Blasting written by Pradeep K. Singh and published by CRC Press. This book was released on 2012-11-05 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock Fragmentation by Blasting contains the papers presented at the 10th International Symposium on Rock Fragmentation by Blasting (New Delhi, India, 26-29 November 2012), and represents the most advanced forum on blasting science and technology. The contributions cover all major recent advancements in blasting and fragmentation, from realistic tre