Study of Methods to Improve Pillar Extraction Practices in Underground Coal Mines PDF Download
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Author: J.J. Davis Associates
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages :
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Book Description
Author: J.J. Davis Associates
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages :
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Book Description
Author: R. D. Singh
Publisher: New Age International
ISBN: 9788122409741
Category : Coal
Languages : en
Pages : 730
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Book Description
Principles And Practices Of Modern Coal Mining Is A Comprehensive Text Book On The Theory And Practice Of Coal Mining. It Highlights The Principles And Describes The Modern Techniques Of Surface And Underground Coal Mining Citing Examples From India And Abroad. It Deals With The Exploitation Of Coal Seams Of Different Thicknesses And Dips Occurring In A Variety Of Conditions. Emerging Technologies Of Coal Mining And Their Applications Have Also Been Amply Discussed.After An Introductory Chapter Tracing The History Of Coal Mining And The Development Of Coal Mining Industry In Different Principal Coal ProducingCountries And Highlighting The Emerging Technologies Of Coal Mining The World Over, The Book Offers A Chapter By Chapter Discussion Of The State Of Art Of Underground And Surface Coal Mining Technology.Every Aspect Of Science Of Coal Mining From Geological Occurrence And Exploration To Planning And Exploitation Of Coal Seams, Including Management Of Environment Has Been Scrutinised By The Author. For The Professionals In The Coal Industry As Well As To The Planners, Researchers And Students Of Mining Engineering, The Book Will Be A Useful Reference.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309134137
Category : Science
Languages : en
Pages : 182
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Book Description
Coal will continue to provide a major portion of energy requirements in the United States for at least the next several decades. It is imperative that accurate information describing the amount, location, and quality of the coal resources and reserves be available to fulfill energy needs. It is also important that the United States extract its coal resources efficiently, safely, and in an environmentally responsible manner. A renewed focus on federal support for coal-related research, coordinated across agencies and with the active participation of the states and industrial sector, is a critical element for each of these requirements. Coal focuses on the research and development needs and priorities in the areas of coal resource and reserve assessments, coal mining and processing, transportation of coal and coal products, and coal utilization.
Author: James Washington Paul
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 76
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This thesis presents a logical design methodology for coal mine extraction optimization under massive sandstone roof as developed though a case study analysis of the Quinsam Coal 4 South mine, a shallow underground room and pillar mine with a massive sandstone roof. This research is intended to guide Quinsam Coal and other coal mines globally in efforts to develop or optimize coal extraction and address the geomechanical challenges presented by massive sandstone roof. In this thesis, the tools required to facilitate effective site characterization, ground support design, excavation stability, pillar design, environmental risk management and mining method optimization are presented, as part of a comprehensive design methodology. Guidelines for pillar design are presented based on software assisted gravity-wedge analysis, and review of empirical and analytical design methods. Tools for addressing temporal change in pillar size, shape and stress as well as pillar jointing effects are provided. Pillars are designed to accommodate stresses and strains arising from the known range of overburden depths. An optimized non-caving checkerboard partial pillar extraction method is presented to mitigate environmental risk, address the poor and unpredictable caving mechanics of the massive sandstone roof and provide adequate coal extraction. Modeling of in-line pillar mining and checkerboard partial pillar mining methods was completed with ExamineTAB, a pseudo-3D displacement discontinuity program in support of checkerboard partial pillar mining. Instructional training is required with any modification in mining methods or conditions to apprise the underground workforce on the technical details of the mine design and the importance of adhering to the standards thereof. Using this research work and analysis of the 4 South mine as a backdrop, the design of coal mines under massive sandstone roof is facilitated. The application of the design methodology to the 4 South mine illustrate.
Author: United States. Bureau of Mines
Publisher:
ISBN:
Category : Fuel
Languages : en
Pages : 160
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Book Description
Author: Ashok Kumar
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Book Description
Bord and Pillar method of underground mining has been used extensively to develop Indian coal seams into pillars and galleries. This results in only 20,Äì30% recovery of coal and rest coal remain locked up in developed pillars. Indian coalfields are famous in the world for its uniqueness and complexity of the geomining conditions which makes the extraction of the locked-up coal pillars a difficult and hazardous activity using different underground mining methods. Indian mining industry has introduced mechanisation since last 10¬†years to deal with the various underground rock mechanics issues in order to improve the efficiency and safety during recovery of locked-up coal pillars. But mere introduction of mechanisation did not solve all the rock mechanics problems due to requirement of indigenous design of different involved geotechnical elements for Indian geomining conditions. CSIR-CIMFR is a national research organisation engaged in improving conditions of underground coal mines. It has developed rock mechanics advances, namely, design of irregular shaped heightened rib/snook, roof bolt-based breaker-line support, warning limit of roof sagging, and cut-out distance for continuous miner-based mechanised depillaring. This chapter presents the developments made and highlights challenges to pursue future research studies for mechanised depillaring-based mass coal production from Indian underground mines.
Author: Peter W. Kauffman
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 244
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Book Description
Author: Syd S. Peng
Publisher: Woodhead Publishing
ISBN: 0081012802
Category : Technology & Engineering
Languages : en
Pages : 463
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Book Description
Advances in Coal Mine Ground Control is a comprehensive text covering all recent advances in coal mine ground control, the most advanced subsystem of the rapidly advancing coal mining systems. This complete resource is written by Professor Syd Peng who, alongside leading experts from the world’s major coal producing countries, has contributed extensively to the understanding of subsidence from underground coal mining, longwall operations and ground control in underground mines. Syd and the team of contributors bring together key advances from the past decade into one comprehensive resource that is accessible to all those studying, researching and working in the mining industry. This book is an essential text for undergraduate and graduate students of mining engineering and related programs, and a must-have reference for mining, civil and geotechnical engineers. Written and edited by the world’s leading experts on ground control in coal mining Covers all aspects of ground control practices in coal mines Focuses on advances over the past decade, equipping readers with the most up-to-date knowledge regarding current research and practices in the field
Author: Pramod Thakur
Publisher: Woodhead Publishing
ISBN: 0081004583
Category : Technology & Engineering
Languages : en
Pages : 530
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Book Description
Advanced Mine Ventilation presents the reader with a unique book providing the theory and applications for designing mine ventilation with computers, controlling respirable coal dust and diesel particulate matter, combustible gas control and, mine fire management. The book summarizes the latest knowledge created in the past 40 years in these areas. Authored by an expert in the field with 50 years' experience, the book is a great combination of theory and applications. The mine ventilation section provides computer programs (both FORTRAN and C++) to calculate not only air quantities and pressure losses but also the concentration of any pollutant in all junctions and branches of the mine network. Small particle mechanics and dust control is covered in the second section of the book. The third section on combustible gas control discusses all aspects of mine gases from origin to control. The last section on mine fire control discusses spontaneous combustion, frictional ignitions, mine explosions, and mine sealing and recovery. The book is not only a very good reference book but also an excellent textbook for two graduate level courses in Mining Engineering. Provides the latest knowledge on the four related topics of mine environment control; that is, ventilation, dust, gas, and fire in a single volume Computer simulation of mine ventilation in both FORTRAN and C++ State-of-the-art respirable dust control Mine degasification and methane production from a coal lease Mine fire management
