Rockburst Evolutionary Process and Energy Dissipation Characteristics
Rockburst Evolutionary Process and Energy Dissipation Characteristics

Author: Dazhao Song

Publisher: Springer

Published: 2019-04-27

Total Pages: 257

ISBN-13: 9811362793

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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..

Rock Dynamics and Applications 3
Rock Dynamics and Applications 3

Author: Charlie Li

Publisher: CRC Press

Published: 2018-06-18

Total Pages: 719

ISBN-13: 1351181319

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Rock Dynamics – Experiments, Theories and Applications is a collection of scientific and technical papers presented at the Third International Conference on Rock Dynamics and Applications (RocDyn-3, Trondheim, Norway, 26-27 June 2018). The papers in the book reflect the recent developments in experiment and theory as well as engineering applications of rock dynamics. Rock dynamics studies the response of rock and rock masses under dynamic loading and during the state transition from static loading to kinetic movement. It also includes the study of engineering countermeasures to dynamic instability of rock and rock masses. The topics in the book include: - Dynamic theories - Numerical simulation - Propagation of stress waves - Dynamic tests of rock - Stability of underground openings under dynamic loading - Rockburst - Seismic monitoring - Dynamic rock support - Blasting - Earthquake-related rock structure damage, etc. Applications, such as rockburst, dynamic rock support, seismic monitoring, blasting and earthquake-related rock structure damage, are paid special attention in Rock Dynamics – Experiments, Theories and Applications. The papers, from specialists both from mining and tunnelling branches, discuss commonly interested dynamic issues. Their experience and knowledge in the application of rock dynamics are extremely valuable for all academics, engineers and professionals who work with rock dynamics.

Instability Mechanism and Disaster Prevention of the Jointed Rockmass
Instability Mechanism and Disaster Prevention of the Jointed Rockmass

Author: Shuren Wang

Publisher: Frontiers Media SA

Published: 2024-06-13

Total Pages: 132

ISBN-13: 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.

Coal and rock dynamic disasters: Advances of physical and numerical simulation in monitoring, early warning, and prevention
Coal and rock dynamic disasters: Advances of physical and numerical simulation in monitoring, early warning, and prevention

Author: Xuelong Li

Publisher: Frontiers Media SA

Published: 2024-06-03

Total Pages: 160

ISBN-13: 2832549837

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With the soaring growth of global population and socioeconomy, energy consumption and demand has been rapidly rising, and coal would still remain a fundamental energy source for a long time into the future. Seeking deep coal resources becomes an inevitable trend due to the depletion of shallow coal resources. Deep mining of coal resources promotes socioeconomic development, whereas bringing a variety of security challenges. In deep underground, there is a significant risk increase in coal and rock dynamic disasters (CRDDs), owing to the changes in physical and mechanical properties of coal and rock. In this regard, it is of great importance and necessity to prevent and control CRDDs effectively and efficiently. As typical natural geological materials, coal and rock have evident inhomogeneity and anisotropy, and manifest differences in strength, deformation, permeability, and other mechanical characteristics due to their various mineral compositions, porosity, and weak structural plane. Considering the complexity of coal and rock, it is essential to carry out laboratory experiments on macroscopic mechanical responses and microscopic fracture characteristics to identify precursor information and reveal evolution mechanisms of dynamic disasters. Yet by far less is known about the combined physical and numerical simulation on multi-scale CRDDs, which hinders the development of corresponding prevention and control technologies. This Research Topic aims to initiate a global scientific and technological discussion on the cutting-edge advances of physical and numerical simulation in monitoring, early warning, and prevention of CRDDs. We welcome Original Research and Review articles addressing the following themes that include, but are not limited to: • Physical and numerical simulation on mechanisms of CRDDs • Numerical simulation on prediction of CRDDs • Numerical simulation on prevention and control of CRDDs collapse

Geological Disasters in Deep Engineering Mechanism, Warning and Risk mitigation
Geological Disasters in Deep Engineering Mechanism, Warning and Risk mitigation

Author: Guang-Liang Feng

Publisher: Frontiers Media SA

Published: 2023-06-15

Total Pages: 498

ISBN-13: 2832525075

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With the increasing demand for infrastructure construction as the global economy progresses, the need for exploration and utilization of deep underground space becomes more crucial. Various deep underground projects are planned, are under construction, and have been built to encounter great construction challenges due to the complex geo-environment such as strong tectonic movement, fragile geo-environment and complex thermo-hydro-mechanical-chemical conditions. These deep engineering projects could be endangered by different kinds of geological disasters, such as intense rockburst, large deformation, strong water inrush, and large-scale collapse, which might result in massive loss of life and economic damage during the construction of deep underground projects. It is necessary to take proactive measures to ensure that the development of deep engineering projects is risk-informed and sustainable. Efforts are being called for strengthening science and technology innovation and cooperation in geological disaster mitigation and sustainable development during the construction of deep engineering projects. It is paramount to use new technologies and international cooperation to jointly tackle the geological disasters risks and achieve sustainable development. To mitigate the risk of geological disaster in deep engineering under the complicate geo-environment, the mechanism of the formation and evolution of geological disasters in deep engineering needs to be understood. The testing, monitoring, simulation, risk assessment and early warning methods for geological disaster in deep engineering are also needed urgently. New theories, methods and techniques related to the mechanism, warning and risk mitigation of geological disasters in deep engineering will be extremely helpful for the construction safety of deep engineering.

Advances in Rock-Support and Geotechnical Engineering
Advances in Rock-Support and Geotechnical Engineering

Author: Shuren Wang

Publisher: Butterworth-Heinemann

Published: 2016-08-17

Total Pages: 424

ISBN-13: 0128105534

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Advances in Rock-Support and Geotechnical Engineering brings together the latest research results regarding the theory of rock mechanics, its analytical methods and innovative technologies, and its applications in practical engineering. This book is divided into six sections, rock tests, rock bolting, grouted anchor, tunneling engineering, slope engineering, and mining engineering. Coverage includes fracture hinged arching process and instability characteristics of rock plates, failure modes of rock bolting, scale effects, and loading transfer mechanism of the grouted anchor. Also covered are recent innovations and applications in tunneling engineering, slope engineering, and mining engineering. This book provides innovative, practical, and rich content that can be used as a valuable reference for researchers undertaking tunneling engineering, slope engineering, mining engineering, and rock mechanics, and for onsite technical personnel and teachers and students studying the topics in related universities. - Enriches new theories on failure modes of rock plates, rock bolting mechanisms, and anchor loading transfer - Develops new methods of evaluating the stability of slope engineering and the roof stability of the mined-out areas - Includes fracture hinged arching process and instability characteristics of rock plates, failure modes of rock bolting, scale effects, and loading transfer mechanism of the grouted anchor

Engineering Disturbed Rock Mass Structural Mechanics: Stress Disturbance and Freeze-Thaw on Rock Structure Deterioration
Engineering Disturbed Rock Mass Structural Mechanics: Stress Disturbance and Freeze-Thaw on Rock Structure Deterioration

Author: Yu Wang

Publisher: Scientific Research Publishing, Inc. USA

Published: 2021-03-29

Total Pages: 305

ISBN-13: 1649971052

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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.