Rockburst in Extra-thick Coal Seam Mining: Mechanism and Prevention

Rockburst in Extra-thick Coal Seam Mining: Mechanism and Prevention
Author: Sitao Zhu
Publisher: Springer
Total Pages: 0
Release: 2024-07-20
Genre: Science
ISBN: 9789819733767

This book provides a detailed introduction to the mechanism of rockburst in extremely thick coal seam mining and explores the mechanical mechanism on why the critical depth of rockburst in extremely thick coal seam mining is significantly smaller than that in thin to thick coal seams, it also proposes targeted monitoring, warning, and treatment technologies. The prevention and control of coal mine rockburst is a global problem, attracting engineers and scientists from various disciplines such as mining, geology, geophysics, and civil engineering to conduct research. This book provides multiple case studies of rockburst accidents in mining of ultra-thick coal seams and provides a detailed analysis of the mechanisms and treatment technologies of each rockburst accident. It aims at graduate students, researchers, and on-site engineers who are interested in the mechanism of rockburst occurrence, monitoring, early warning, and treatment technology. The translation was done with the help of artificial intelligence. The present version has been revised technically and linguistically by the authors in collaboration with a professional translator.

Rockbursts in Coal Mines and Their Prevention

Rockbursts in Coal Mines and Their Prevention
Author: Gerhard Braeuner
Publisher: Routledge
Total Pages: 287
Release: 2017-07-12
Genre: Technology & Engineering
ISBN: 1351418033

The preventive methods described have proved highly effective. They comprise laying out the workings in such a way as to minimize dangerous concentrations of ground stresses, and early elimination by means of blasting, drilling, or water infusion. An account of these methods as applied in German coal mines, the deepest in the world. Contents: Rockbursts & similar phenomena; Conditions of occurrence; Influence of rock stress; Bursting & nonbursting coal; Long-term prevention; Direct prevention; Borehole patterns for direct prevention; Destressing methods; Case histories.

Groundwater-induced geological disasters in underground engineering: Theoretical, experimental, and numerical approaches

Groundwater-induced geological disasters in underground engineering: Theoretical, experimental, and numerical approaches
Author: Shengli Yang
Publisher: Frontiers Media SA
Total Pages: 164
Release: 2023-12-21
Genre: Science
ISBN: 2832541259

Water inrush (WI) is one of the most dangerous geological disasters in underground engineering, with significant human casualties and economic losses. To prevent and control WI disasters, great efforts have been made to address WI mechanisms for more than half a century. In particular, the seepage instability theory is hitherto one of the most widely used theoretical models. This theory portrays that the seepage system will undergo structural instability when the initial values of permeability and boundary pressure meet certain conditions, which manifests that the permeability parameter is one of the most valuable indicators to unveil WI mechanisms. However, rock permeability is determined by its internal structural characteristics, which can be affected by water chemical composition, stress environment, and temperature. In this regard, it is of great necessity and importance to facilitate a better understanding of the holistic impacts of multi-field coupling on rock internal structure and deformation failure characteristics. This Research Topic aims to initiate a global forum for presenting and disseminating the latest advancements of WI mechanisms, which entails the characterization of physical and laboratory tests, 3D reconstruction of rock internal structure, numerical approaches, theoretical models under multi-field coupling, and filed date analysis methods.

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
Total Pages: 160
Release: 2024-06-03
Genre: Science
ISBN: 2832549837

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

Advances in Energy Materials and Environment Engineering

Advances in Energy Materials and Environment Engineering
Author: Chong Kok Keong
Publisher: CRC Press
Total Pages: 1198
Release: 2022-11-23
Genre: Science
ISBN: 1000831299

This new book, Advances in Energy Materials and Environment Engineering, covers the timely issue of green applications of materials. It covers the diverse usages of carbon nanotubes for energy, for power, for the protection of the environment, and for new energy applications. The diverse topics in the volume include energy saving technologies, renewable energy, clean energy development, nuclear engineering and hydrogen energy, advanced power semiconductors, power systems and energy and much more. This timely book addresses the need of the hour and will prove to be valuable for environmentally conscious industry professionals, faculty and students, and researchers in materials science, engineering, and environment with interest in energy materials.