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The results enrich the mining theory of complex coal seams and provide a theoretical basis for safe and efficient mining in steeply dipping seam.
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Coal Mining Technology: Theory and Practice Hardcover – 1 June 1983 by Robert Stefanko (Author), Christopher J. Bise (Editor) 4.0 4.0 out of 5 stars 1 rating
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The RNP (board-and-pillar) mining method with partial pillar extraction using four CMs was applied to extract coal (Mining Technology, n.d.). Other active coal mining operations in Canada are Cardinal river operations producing around 2 Mt of coal/year, coal valley mine of Edson Alberta has a production of approximately 3 Mt coal/year, etc. …
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The coal wall of large mining height longwall fully mechanized face in steeply dipping coal seam has poor self-stability and high probability of instability, which is likely to induce secondary ...
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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. ... the book offers a chapter by chapter discussion of the state of art of ...
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WANG Qing-yuan. The technology practice of repeated mining the area destroyed by the small coal mine in Honghui mine. Coal, 2009(12): 21-23. [4] QI Guang-hui. The technology practice of recovering resources in the area destroyed by the small coal mine. Mining Engineering, 2009(09): 2009(09): 7-9. [5] WEI Yong.
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The following section covers mining practices internationally with a brief summary of the status of coal mining in China, India, and Australia. The last section …
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24 G. Wang et al. 1 3 Page 2 of 17 1 Introduction Over the past 40 years, China's coal industry has achieved significant progress through comprehensive mechaniza-
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Innovation plays a critical role in the mining industry as a tool to improve the efficiency of its processes, to reduce costs, but also to meet the increasing social and environmental concerns among communities and authorities. Technological progress has also been crucial to allow the exploitation of new deposits in more complex scenarios: …
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Integrated coal production Gas extraction De-stress mining Pillarless mining Circular overlying zone
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The diversity of coal mining conditions in China, as well as the limitations imposed by historical mining levels, have resulted in a large amount of residual coal resources 4,32,33,34.The safe and ...
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Taking into account the gas deposition and flow conditions in the Chinese coal basins, this paper describes the status of the theory and key technologies of this …
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The top-level architecture of 5G+ intelligent coal mine systems combines intelligent applications such as autonomous intelligent mining, human–machine collaborative rapid …
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With the introduction of automation and artificial intelligence technology into the mining industry, more than 100 longwall working faces have been equipped with automated and intelligent coal ...
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The chapter gives a holistic view of coal from its geological occurrence, mining methods, washing techniques, general description of coal washery and its operations, quality monitoring, instrumentation and control, problems encountered in operations, and their troubleshooting techniques.
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mining. The mining practice suggests that the fully mechanized mining method was the basic solution for guaranteeing safety, efficiency, and high recovery ratio mining of underground coal mining. The development of longwall mining equipment technology epitomizes the mining method change. In this revolution, hydraulic sup-
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The integrated extraction of coal and gas combines coal mining with gas capture. Taking into account the gas deposition and flow conditions in the Chinese coal basins, this paper describes the status of the theory and key technologies of this integrated extraction system, and presents its application and practice in the Shaqu, Z, …
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In the eld of shallow coal mining theory and technology in China, Feng et al.4,35–37 have conducted a sig- nicant amount of targeted research and achieved remarkable results. Feng et al 4 ...
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Research and practice of intelligent coal mine technology systems ... opment has focused on the theory, technology, and equip-ment of fully mechanized mining, leading to a complete ... and for caving mining. In the past 10 years, innovative research and develop-ment on intelligent mining technology and equipment have seen breakthroughs in a ...
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Taking into account the gas deposition and flow conditions in the Chinese coal basins, this paper describes the status of the theory …
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Review of Coal Mining Technologies Currently Used at Federal Mines. Although underground mining was, at one time, the principal mining method in parts of Colorado, …
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Theory, technology and application of grouted bolting in soft rock roadways of deep coal mines ... 1,2,3) 1) Coal Mining Research Institute, China Coal Technology and Engineering Group Co. Ltd., Beijing 100013, China 2) Coal Mining Branch, China Coal Research Institute, Beijing 100013, China 3) State Key Laboratory of Intelligent Mining …
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This chapter describes the process of coalification, which gradually turns plant debris into coal, involving heat, pressure and the effects of time.
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3.1 System design. The new-generation information management system is applicable to the entire business process of the coal mine prospecting work. It is based on network and spatial information technologies (Mao et al. 2014, 2017, 2018).The architecture of this system is shown in Fig. 1 .The "One Map" online collaborative (2D-GIS) …
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Coal Mining Technology: Theory and Practice. Robert Stefanko, Christopher J. Bise (Editor), Thomas V. Falkie (Editor) 4.00. 1 ...
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The integrated extraction of coal and gas combines coal mining with gas capture. Taking into account the gas deposition and flow conditions in the Chinese coal basins, this paper describes the status of the theory and key technologies of this integrated extraction system, and presents its application and practice in the Shaqu, Z, …
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Coal mining - Underground mining: In underground coal mining, the working environment is completely enclosed by the geologic medium, which consists of the coal seam and the overlying and underlying strata. Access to the coal seam is gained by suitable openings from the surface, and a network of roadways driven in the seam then …
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Yuan L, 2008a. Theory and practice of integrated pillarless coal production and methane extraction in multiseams of low permeablity. Bejing: China Coal Industry Publishing House, 1–7. Google Scholar Yuan L, 2008b. Technology of simultaneous extraction of coal and gas with boreholes drilled in retained roadway.
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theoretical frame and technology system. 3 Coal mine underground reservoir theory and technology 3.1 Basic theory research 3.1.1 "Three fields" development rule in coal mining To master the rule of generation and migration of the mine water in coal mining, a systematic simulation (Figure 3) and onsite research on development rule of the ...
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Theory and practice of fully mechanized longwall mining ... research efforts have tried to improve the mining technology in steeply dipping coal seams. Based on this work, a dynamic model of a ...
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