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BL
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| Record Number
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864748
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| Main Entry
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Cheng, Jianwei
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| Title & Author
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Explosions in underground coal mines : : risk assessment and control /\ Jianwei Cheng.
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| Publication Statement
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Cham, Switzerland :: Springer,, 2018.
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| Page. NO
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1 online resource (xvii, 208 pages) :: illustrations (some color)
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| ISBN
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303009099X
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: 3319748939
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: 3319748947
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: 9783030090999
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: 9783319748931
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: 9783319748948
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3319748920
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9783319748924
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| Bibliographies/Indexes
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Includes bibliographical references and index.
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| Contents
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Intro; Forewords; Preface; Acknowledgements; Contents; Chapter 1: Importance and Characteristics of Underground Mine Gas Explosions; 1.1 Mine Gas Explosion Accidents; 1.2 Recognition of Mine Gas Explosions Hazard in Underground Coal Mine; 1.2.1 Underground Working Faces; 1.2.2 Tunnels with Electrical Equipment; 1.2.3 Mine Gob Areas; 1.3 Complexities in Mine Gas Explosion; 1.4 Outline of This Book; References; Chapter 2: A Historical Review of Identifying and Mitigating Mine Gas Explosions; 2.1 Techniques to Analyze or Control the Sealed Mine Volume; 2.1.1 Theoretical Analysis Approach.
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2.1.2 Numerical Simulation2.1.3 Mine Seal Practices; 2.1.4 Pressure Chamber; 2.1.5 Positive Pressure Chamber; 2.2 Classical Methods for Determining Mine Gas Explosibility; 2.2.1 Tertiary Diagram; 2.2.2 Revised Le Charterlierś Method; 2.2.3 Maximum Allowable Oxygen (MAO) Analysis; 2.2.4 USBM Method; 2.2.5 Kukuczka Method; 2.2.6 Discussion; 2.3 Underground Mine Gas Explosion Prevention Techniques; 2.3.1 Rock Dusting; 2.3.2 Stonedust and Water Barriers; 2.3.3 Water Mist Curtain; 2.3.4 Closed Vacuum Chamber; 2.3.5 ExploSpot Active Suppression System; 2.3.6 Porous Medium Materials.
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2.3.7 Suppression Powders2.3.8 Discussion; References; Chapter 3: Modelling Mine Atmosphere in a Sealed Coal Mine Volume; 3.1 Factors Controlling the Mine Atmospheric Compositions; 3.1.1 Barometric Pressure Change; 3.1.2 Coal Mine Seals; 3.1.3 Gas Compositions in a Sealed Mine Volume; 3.2 Coal Mine Sealed Atmosphere Modeling; 3.3 Mathematical Model Approach; 3.3.1 Control Volume Approach; 3.3.2 Ideal Gas Law; 3.3.3 Mathematical Derivation; 3.3.4 Discussion of Model Assumptions; 3.3.5 Parameter Estimates; 3.3.6 Verification Case Study; 3.3.6.1 Background Information.
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3.3.6.2 Simulation Strategy3.3.6.3 Results Comparison; 3.4 Physical and Numerical Modelling Approach; 3.4.1 Physical Modelling; 3.4.2 Physical Simulation Experiments; 3.4.2.1 Physical Model Frame and Similarity Ratios; Rock Strata Similarity; Ventilation Flow Field Similarity; 3.4.2.2 Model Description; 3.4.2.3 Experimental Plans; 3.4.2.4 Results and Discussions; Gas Distribution Within the Gob; Gas Distribution Within Overlying Strata; 3.4.3 Numerical Modelling; 3.4.3.1 Numerical Model and Validation; Selection of Model; Mathematical Model; Numerical Model and Boundary Conditions.
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Numerical Results in the GobValidation of Number Results; 3.4.3.2 Ventilation Conditions; Out-Flow Rate of Methane; Ventilation Rate at Working Face; 3.4.4 Numerical Studies for Various Ventilation Systems; 3.4.4.1 Numerical Models and Boundary Conditions; 3.4.4.2 Methane Concentration in the Gob; W Type Ventilation System; U + L Type Ventilation System; Y Type Ventilation System; J Type Ventilation System; 3.4.4.3 Results and Discussions; References; Chapter 4: Improved Explosibility Diagram Method; 4.1 Gas Explosion; 4.2 The Coward Explosibility Diagram.
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| Abstract
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This book addresses the hazard of gas explosions in sealed underground coal mines, and how the risk of explosion can be assessed, modeled, and mitigated. With this text, coal mine operators and managers will be able to identify the risks that lead to underground mine gas explosions, and implement practical strategies to optimize mining safety for workers. In six chapters, the book offers a framework for understanding the sealed coal mine atmosphere, the safety characteristics that are currently in place, and the guidelines to be followed by engineers to improve upon these characteristics. The first part of the book describes the importance and characteristics of underground gas mine explosions in a historical context with data showing the high number of fatalities from explosion incidents, and how risk has been mitigated in the past. Chapters also detail mathematical models and explosibility diagrams for determining and understanding the risk factors involved in mine explosions. Readers will also learn about safety operations, and assessments for the sealed mine atmosphere. With descriptions of chapter case studies, mining engineers and researchers will learn how to apply safety measures in underground coal mines to improve mining atmospheres and save lives.
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| Subject
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Coal mine accidents.
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Mine explosions.
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Coal mine accidents.
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Fire protection safety.
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Fossil fuel technologies.
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Mathematical modelling.
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Mine explosions.
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Mineralogy gems.
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Pollution threats to the environment.
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Reliability engineering.
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| Subject
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TECHNOLOGY ENGINEERING-- Mining.
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| Dewey Classification
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622/.82
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| LC Classification
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TN313
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