Rock Fracture And Rockbursts
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Rock Fracture And Rockbursts
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Author : W. David Ortlepp
language : en
Publisher:
Release Date : 1997
Rock Fracture And Rockbursts written by W. David Ortlepp and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Fracture mechanics categories.
Evolution Monitoring And Predicting Models Of Rockburst
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Author : Chunlai Wang
language : en
Publisher: Springer
Release Date : 2017-12-13
Evolution Monitoring And Predicting Models Of Rockburst written by Chunlai Wang and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-13 with Science categories.
This open access book focuses on investigating predicting precursor information and key points of rockburst in mining engineering through laboratory experiment, theoretical analysis, numerical simulation and case studies. Understanding the evolution patterns for the microstructure instability of rock is a prerequisite for rockburst prediction. The book provides a guide for readers seeking to understand the evolution patterns for the microstrucure of rock failure, the predicting key point of rock failure and the rockburst predicting model. It will be an essential reference to understand mechanism of rockburst and sheds new light on dynamic disasters prediction. Chapters are carefully developed to cover (1) The evolution patterns for the microstructure instability of rock; (2) Rockburst hazard monitoring and predicting criterion and predicting models. The book addresses the issue with a holistic and systematic approach that investigates the occurrence mechanism of rockburst based on the evolution patterns for the microstructure of rock failure and establishes the predicting model of rockburst. This book will be of interest to researchers of mining engineering, rock mechanics engineering and safety engineering.
Numerical Exploration Of Shear Fracture Related Rock Bursts Using A Strain Softening Constitutive Law
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Author : Jeff K. Whyatt
language : en
Publisher:
Release Date : 1991
Numerical Exploration Of Shear Fracture Related Rock Bursts Using A Strain Softening Constitutive Law written by Jeff K. Whyatt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Mineral industries categories.
Rockburst Evolutionary Process And Energy Dissipation Characteristics
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Author : Dazhao Song
language : en
Publisher: Springer
Release Date : 2019-04-27
Rockburst Evolutionary Process And Energy Dissipation Characteristics written by Dazhao Song and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-27 with Science categories.
This book investigates the evolution process of rockburst based on the energy dissipation theory and proposes appropriate active prevention and control technologies. It discusses the electromagnetic radiation (EMR) generated by coal rock fractures as a measurement of the amount of dissipated energy, and the use of EMR to experimentally observe the time domain characteristics of energy dissipation during coal rock failure processes. It then proposes the concept of the rockburst activity domain system (RADS), establishes a dynamic pressure model of rockburst, and describes the energy criterion for rockburst instability. Lastly, it presents two waterjet cutting-based cases of pressure relief and rockburst prevention. The book serves as a reference resource for mine safety workers, engineering technicians, scientists, graduate students and undergraduates engaged in research on dynamic hazards such as rockburst..
Laboratory Investigation Into Fracturing Of Uniaxially Loaded Hard Rock With Expansive Cement
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Author : Flavie Arseneau
language : en
Publisher:
Release Date : 2019
Laboratory Investigation Into Fracturing Of Uniaxially Loaded Hard Rock With Expansive Cement written by Flavie Arseneau and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
"A rockburst can be defined as a sudden and violent ground failure often associated with a seismic event. Rockbursts are a danger to underground mine workers and jeopardize smooth mining operations. To avoid rockbursts, multiple techniques have been developed such as ground preconditioning (relieving stress of the rock and promoting fracturing of the rock mass via drilling and blasting), ground support (cables, high endurance rock bolts, meshes) or alternative mining sequences. The current research focuses on ground pre-conditioning.Ground preconditioning, which is a type of ''destress blasting'', is only optimally effective when applied correctly on time and at the right place, with the right quantity of explosives. Further research is needed in this field as the process of blasting with explosives energy to create fractures imposes rigorous safety measures on site. This thesis is the extension of previous work of the Mine Design Laboratory (Musunuri & Mitri, 2009) (Dessouki & Mitri, 2011) on explosive-free rock breakage. This thesis further explores the efficiency of hole notching to enhance the rock fracturing process. This new concept aims to find advantages into inducing less seismicity into the rockmass and generating sufficient fractures to prevent rockbursts.The primary goal of this study is to set up an experimental program in the Rockbolting Lab of the Mine Design Laboratory to conduct customized testing related to ground pre-conditioning, discrete fracturing, expansive cement and hole notching. The second goal of this study is to evaluate the competency of expansive cement under axial loading. The third goal of this study is to evaluate the effectiveness of hole notching to enhance the rock fracturing process. A constant uniaxial pressure (CUP) experiment was adopted to simulate in-situ stress conditions. Based on the work done in this study, it is shown that expensive cement and hole notching could be effective to fracture granite rock samples under axial load. Suggestions to improve the experiment procedure, as well as recommendations for further testing are made." --
Rockburst
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Author : Xia-Ting Feng
language : en
Publisher: Butterworth-Heinemann
Release Date : 2017-10-19
Rockburst written by Xia-Ting Feng and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-19 with Technology & Engineering categories.
Rockburst: Mechanisms, Monitoring, Warning and Mitigation invites the most relevant researchers and practitioners worldwide to discuss the rock mechanics phenomenon related to increased stress and energy levels in intact rock introduced by drilling, explosion, blasting and other activities. When critical energy levels are reached, rockbursts can occur causing human and material losses in mining and tunneling environments. This book is the most comprehensive information source in English to cover rockbursts. Comprised of four main parts, the book covers in detail the theoretical concepts related to rockbursts, and introduces the current computational modeling techniques and laboratory tests available. The second part is devoted to case studies in mining (coal and metal) and tunneling environments worldwide. The third part covers the most recent advances in measurement and monitoring. Special focus is given to the interpretation of signals and reliability of systems. The following part addresses warning and risk mitigation through the proposition of a single risk assessment index and a comprehensive warning index to portray the stress status of the rock and a successful case study. The final part of the book discusses mitigation including best practices for distressing and efficiently supporting rock. Designed to provide the most comprehensive coverage, the book will provide practicing mining and tunneling engineers the theoretical background needed to better cope with the phenomenon, practical advice from case studies and practical mitigation actions and techniques. Academics in rock mechanics will appreciate this complete reference to rockburst, which features how to analyze stress signals and use computational modeling more efficiently. Offers understanding of the fundamental theoretical concepts of rockbursts Explores how to analyze signals from current monitoring systems Shows how to apply mitigating techniques in current work Identifies characteristics that should be measured in order to detect rockburst risk
Rockbursts
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Author : Wilson Blake
language : en
Publisher: SME
Release Date : 2003
Rockbursts written by Wilson Blake and has been published by SME this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Science categories.
Using a series of case studies, this essential reference documents the experiences of 15 of the most rockburst-prone mines in the U.S. and Canada over the last century. The book provides an historical analysis of rockburst activity along with state-of-the-art strategies for anticipating and preventing this dangerous and disruptive phenomenon.
Fracture Mechanics Of Rock
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Author : Barry Kean Atkinson
language : en
Publisher: Elsevier
Release Date : 2015-05-11
Fracture Mechanics Of Rock written by Barry Kean Atkinson and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-11 with Science categories.
The analysis of crack problems through fracture mechanics has been applied to the study of materials such as glass, metals and ceramics because relatively simple fracture criteria describe the failure of these materials. The increased attention paid to experimental rock fracture mechanics has led to major contributions to the solving of geophysical problems. The text presents a concise treatment of the physics and mathematics of a representative selection of problems from areas such as earthquake mechanics and prediction, hydraulic fracturing, hot dry rock geothermal energy, fault mechanics, and dynamic fragmentation.
Controlling Seismic Risk
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Author : Yves Potvin
language : en
Publisher:
Release Date : 2005
Controlling Seismic Risk written by Yves Potvin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.
Rockbursts And Seismicity In Mines 93
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Author : R. Paul Young
language : en
Publisher: CRC Press
Release Date : 1993-01-01
Rockbursts And Seismicity In Mines 93 written by R. Paul Young and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-01-01 with Science categories.
These proceedings include the latest developments in research and practice in the area of mining-induced seismicity. Three themes are explored: strong ground motion and rockburst hazard; mechanics of seismic events and stochastic methods; and monitoring of seismicity and geomechanical modelling.