[PDF] Rock Failure Instability And Related Aspects Of Earthquake Mechanisms eBook

Author : Shuren Wang
Publisher : Frontiers Media SA
Page : 132 pages
File Size : 40,9 MB
Release : 2024-06-13
Category : Science
ISBN : 2832550401

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Discontinuities such as cracks, fissures, bedding planes, etc. resulting from different geological processes are commonly found in rock masses and often play a critical role in the initiation, propagation, and coalescence of new cracks due to stress redistribution caused by engineering activities and natural disturbances. It is challenging to determine the instability mechanism of jointed rock masses but it is vital for estimating instability disasters in jointed rock engineering.

Author : A.J. Mendecki
Publisher : Springer Science & Business Media
Page : 280 pages
File Size : 23,84 MB
Release : 2012-12-06
Category : Science
ISBN : 940091539X

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Routine seismic monitoring in mines was introduced over 30 years ago with two main objectives in mind: • immediate location of larger seIsmIC events to guide rescue operations; • prediction of large rockmass instabilities. The first objective was achieved fairly quickly, but with the subsequent development of mine communication systems, its strategic importance has diminished. The very limited success with prediction can, at least partially, be attributed to three factors: • seismic monitoring systems based on analogue technology that provided noisy and, frequently, poorly calibrated data of limited dynamic range; • the non-quantitative description of a seismic event by at best its local magnitude; and • the resultant non-quantitative analysis of seismicity, frequently through parameters of some statistical distributions, with a somewhat loose but imaginative physical interpretation. The introduction of modern digital seismic systems to mines and progress in the theory and methods of quantitative seismology have enabled the implementation of realtime seismic monitoring as a management tool, quantifying rockmass response to mining and achieving the first tangible results with prediction. A seismic event, being a sudden inelastic deformation within the rockmass, can now routinely be quantified in terms of seismic moment, its tensor, and radiated seismic energy, so that the overall size of, and stress released at, the seismic source can be estimated.

Author : National Research Council
Publisher : National Academies Press
Page : 431 pages
File Size : 26,70 MB
Release : 2003-09-22
Category : Science
ISBN : 0309065623

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The destructive force of earthquakes has stimulated human inquiry since ancient times, yet the scientific study of earthquakes is a surprisingly recent endeavor. Instrumental recordings of earthquakes were not made until the second half of the 19th century, and the primary mechanism for generating seismic waves was not identified until the beginning of the 20th century. From this recent start, a range of laboratory, field, and theoretical investigations have developed into a vigorous new discipline: the science of earthquakes. As a basic science, it provides a comprehensive understanding of earthquake behavior and related phenomena in the Earth and other terrestrial planets. As an applied science, it provides a knowledge base of great practical value for a global society whose infrastructure is built on the Earth's active crust. This book describes the growth and origins of earthquake science and identifies research and data collection efforts that will strengthen the scientific and social contributions of this exciting new discipline.

Author : O. Aydan
Publisher : Routledge
Page : 1004 pages
File Size : 45,70 MB
Release : 2022-04-27
Category : Technology & Engineering
ISBN : 1351465503

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First published in 1993. This volume is a collection of papers addressing the issue of the failure of rock engineering structures. This phenomenon occurs in different forms depending on the geometry of structure, material properties of intact rock, structure of rock mass, environmental conditions and initial state of stress.

Author : Chun'An Tang
Publisher : CRC Press
Page : 364 pages
File Size : 27,13 MB
Release : 2010-08-06
Category : Science
ISBN : 0203841433

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When dealing with rock in civil engineering, mining engineering and other engineering, the process by which the rock fails under load should be understood, so that safe structures can be built on and in the rock. However, there are many ways for loading rock and rock can have a variety of idiosyncracies. This reference book provides engineers and r

Author : Furen Xie
Publisher : CRC Press
Page : 891 pages
File Size : 38,36 MB
Release : 2010-07-29
Category : Technology & Engineering
ISBN : 0203836103

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The evaluation of in-situ rock stress is not only important in the exploration and engineering involving rock masses for mining, hydropower, tunneling, oil and gas production, and stone quarrying, but also in the geodynamics and earthquake prediction. The methods of determining these stresses for shallow crust in the engineering practice, including