Download or read book Investigation of In situ Stresses in Rocks Via Acoustic Emission and the Kaiser Effect written by Derrick Jay Blanksma and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress Determination in Rock Using the Kaiser Effect written by Michael J. Friedel and published by . This book was released on 1990 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In situ Rock Stress written by Michael Tucker and published by CRC Press. This book was released on 2015-10-12 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the new classification of chronic myeloproliferative disorders, and the rise of interest in molecularly targeted therapies, this timely text brings together international experts on the topic to discuss the current technologies and their implications for the treatment of patients. This title comprehensively covers chronic myeloid leukemia and Ph-negative chronic myeloproliferative disorders and is an essential resource for all practitioners in Hematologic Oncology.
Download or read book Stress Field of the Earth s Crust written by Arno Zang and published by Springer Science & Business Media. This book was released on 2009-12-06 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stress Field of the Earth’s Crust is based on lecture notes prepared for a course offered to graduate students in the Earth sciences and engineering at University of Potsdam. In my opinion, it will undoubtedly also become a standard reference book on the desk of most scientists working with rocks, such as geophysicists, structural geologists, rock mechanics experts, as well as geotechnical and petroleum en- neers. That is because this book is concerned with what is probably the most pe- liar characteristic of rock – its initial stress condition. Rock is always under a natural state of stress, primarily a result of the gravitational and tectonic forces to which it is subjected. Crustal stresses can vary regionally and locally and can reach in places considerable magnitudes, leading to natural or man-made mechanical failure. P- existing stress distinguishes rock from most other materials and is at the core of the discipline of “Rock Mechanics”, which has been developed over the last century. Knowledge of rock stress is fundamental to understanding faulting mechanisms and earthquake triggering, to designing stable underground caverns and prod- tive oil fields, and to improving mining methods and geothermal energy extraction, among others. Several books have been written on the subject, but none has atte- ted to be as all-encompassing as the one by Zang and Stephansson.
Download or read book In situ Stress Determination in Soil and Rock Using the Acoustic Emission Method written by Arthur E. Lord and published by . This book was released on 1984 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: A project was undertaken to determine how well acoustic emission (AE) techniques could be used to determine the existing stress state in rock and soil masses. It was found in rock that the Kaiser Effect (No AE until previous stress level EXCEEDED) was obeyed for short times (delay times) after stress application, but was not obeyed for delay times longer than about 100-1000 hours. In soil, the Kaiser effect was obeyed, but the effect of delay times was not investigated. These results apply to a very wide variety of rock and soil types. A Goodman rock jack was retrofitted with an AE transducer assembly and field tested in large discrete rock masses at a rock quarry and in bore holes in six different sites with varying rock types. This acoustic-rock jack functioned very well above and below the water table. The existing horizontal stresses, predicted from breaks in the AE versus applied stress curves, were of the same order (on the higher end) as those determined by more conventional mthods of determining the existing stress state. A Menard pressuremeter was retrofitted with an AE transducer assembly, and used in bore holes in the field in various soil types. Preliminary field work has shown this acoustic pressuremeter to work well to depths of 10 feet (only used above the water table so far). The existing horizontal (lateral) stresses predicted from the AE pressuremeter results were in the higher portion of the expected values.
Download or read book Determination of Stress and Damage Levels of Rocks Using Acoustic Emission and the Kaiser Effect written by Li Chunlin and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In Situ Stress Reconstruction Using Rock Memory written by Chung-min Hsieh and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] Knowledge of in situ stress for underground construction or excavations is important. With an input of in situ stress magnitude/orientations, one can predict the potential failure, improve the efficiency of ground support and/or provide the parameters for numerical modelling/planning to make the design cost effective. In this thesis, two rock memory-based in situ stress measurement methods, the acoustic emission method and the Deformation rate analysis method, were studied. The acoustic emission method utilizes the Kaiser effect to recover the previously applied maximum stress, which is expected to be the in situ stress. The phenomenon that Kaiser has found and the usage of the Kaiser effect for the in situ stress measurement were reviewed, and a series of tests in aluminium, agate, sandstone, ultramafic and slate samples with different conditions in the sample end was performed. The result shows that the Kaiser effect method of the in situ stress determination has severe limitations. Firstly, the asperities/irregularities/residual material at the sample ends at low stress can manifest themselves as the Kaiser effect. This 'ghost' Kaiser effect created by the sample ends is not related to the rock memory and it is an artefact of the test preparation. A thin plastic sheet (TML strain gauge) plus silicone gel can be a buffer material to reduce the noise from end. A multichannel source location system could also be able to detect the origin of signal. Secondly, the process of crack generation/growth can create sufficient change in the stress path in the following loading cycle. Because the Kaiser effect is masked by the acoustic emission associated with the damage accumulation, the acoustic emission could start much earlier than the previous maximum stress. In order to prevent the damage accumulation from imitating the Kaiser effect and misleading the analysis, one should find the stress range in which the Kaiser effect can be detected, before using the Kaiser effect as a stress measurement method...
Download or read book Rock Stress and Its Measurement written by B. Amadei and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock masses are initially stressed in their current in situ state of stress and to a lesser natural state. Whether one is interested in the extent on the monitoring of stress change. formation of geological structures (folds, faults, The subject of paleostresses is only briefly intrusions, etc. ), the stability of artificial struc discussed. tures (tunnels, caverns, mines, surface excava The last 30 years have seen a major advance our knowledge and understanding of rock tions, etc. ), or the stability of boreholes, a in the in situ or virgin stress field, stress. A large body of data is now available on knowledge of along with other rock mass properties, is the state of stress in the near surface of the needed in order to predict the response of rock Earth's crust (upper 3-4km of the crust). masses to the disturbance associated with those Various theories have been proposed regarding structures. Stress in rock is usually described the origin of in situ stresses and how gravity, within the context of continuum mechanics. It is tectonics, erosion, lateral straining, rock fabric, defined at a point and is represented by a glaciation and deglaciation, topography, curva second-order Cartesian tensor with six compo ture of the Earth and other active geological nents. Because of its definition, rock stress is an features and processes contribute to the current enigmatic and fictitious quantity creating chal in situ stress field.
Download or read book Industrial Communication Technology Handbook Second Edition written by Richard Zurawski and published by CRC Press. This book was released on 2014-11-07 with total page 1564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Featuring contributions from major technology vendors, industry consortia, and government and private research establishments, the Industrial Communication Technology Handbook, Second Edition provides comprehensive and authoritative coverage of wire- and wireless-based specialized communication networks used in plant and factory automation, automotive applications, avionics, building automation, energy and power systems, train applications, and more. New to the Second Edition: 46 brand-new chapters and 21 substantially revised chapters Inclusion of the latest, most significant developments in specialized communication technologies and systems Addition of new application domains for specialized networks The Industrial Communication Technology Handbook, Second Edition supplies readers with a thorough understanding of the application-specific requirements for communication services and their supporting technologies. It is useful to a broad spectrum of professionals involved in the conception, design, development, standardization, and use of specialized communication networks as well as academic institutions engaged in engineering education and vocational training.
Download or read book Engineering Disturbed Rock Mass Structural Mechanics Stress Disturbance and Freeze Thaw on Rock Structure Deterioration written by Yu Wang and published by Scientific Research Publishing, Inc. USA. This book was released on 2021-03-29 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended as a reference book for advanced graduate students and research engineers in rock mechanics related to mining, civil engineering, etc. Environmental and human-induced loading acting on manmade works is disturbed in essence. During construction and operation of major engineering projects, e.g., civil engineering, mining engineering, hydraulic engineering, bridge engineering and petroleum engineering, the structures built in or on rock mass not only bear the complex in situ conditions, e.g., stress, seepage, faulting, thermal and chemical coupling, but also often encounter a variety of stress disturbances during engineering construction and operation periods, the stress disturbance acted on rock mass structures can be low-medium strain rate, and also high strain rate. Along with the constructions on rock mass, a lot of disasters, e.g., tunnel rockburst, induced seismicity and sand liquefaction, are cyclic and dynamic processes.
Download or read book Report of Investigations written by and published by . This book was released on 1919 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Stress 03 written by K. Sugawara and published by CRC Press. This book was released on 2020-12-18 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains three special lectures, six keynote addresses and sixty-eight technical papers presented at the symposium. The wide variety of topics covered are grouped in the proceedings according to subject.
Download or read book Frontiers of Rock Mechanics and Sustainable Development in the 21st Century written by Wang Sijing and published by CRC Press. This book was released on 2020-12-17 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings contain the scientific contributions presented at the 2nd Asian Rock Mechanics Symposium (ISRM 2001 - 2nd ARMS). The theme of the symposium was "Frontiers of Rock Mechanics and Sustainable Development in the 21st Century".
Download or read book Acoustic Emission Microseismic Activity written by Jr., H. Reginald Hardy and published by CRC Press. This book was released on 2003-01-01 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of topics related to acoustic emission/microseismic (AE/MS) activity. It covers basic material behaviour, stress wave propagation, transducer design and installation, electronic instrumentation, data acquisition and analysis, and signal processing, as well as practical applications.
Download or read book New Materials and Advanced Materials written by Zheng Yi Jiang and published by Trans Tech Publications Ltd. This book was released on 2010-10-27 with total page 1994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). These 379 peer-reviewed papers, presented in a two-volume set, cover the latest advances in nanocrystalline materials, thin films and chemical vapor deposition, biocomposites, ceramics technology, MEMS, coatings, nanopowders, fuel cells, etc.; together with their practical application.
Download or read book New Challenges in Rock Mechanics and Rock Engineering written by Roberto Tomás and published by CRC Press. This book was released on 2024-07-29 with total page 1585 pages. Available in PDF, EPUB and Kindle. Book excerpt: New Challenges in Rock Mechanics and Rock Engineering includes the contributions presented at the ISRM European Rock Mechanics Symposium Eurock 2024 (Alicante, Spain, 15-19 July 2024), and explores cutting-edge advancements in rock mechanics and rock engineering. This comprehensive compilation covers various aspects of rock mechanics and rock engineering, including: rock properties, testing methods, infrastructure and mining rock mechanics, design analysis, stone heritage preservation, geophysics, numerical modeling, monitoring techniques, underground excavation support, risk assessment, and the application of EUROCODE-7 in rock engineering. Furthermore, it addresses areas like geomechanics for the oil and gas industry, applications of artificial intelligence, remote sensing methodologies and geothermal technology. New Challenges in Rock Mechanics and Rock Engineering covers the latest breakthroughs and tackles the new challenges in rock mechanics and rock engineering, is aimed at scientists and professionals in these fields, and serves as an essential resource for keeping up to date with industry trends and solutions.
Download or read book Fire and Explosion Hazards of Oil Shale written by and published by . This book was released on 1989 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
