Titlebook: Coal Mechanics; Yuanping Cheng,Qingquan Liu,Ting Ren Book 2021 Science Press and Springer Nature Singapore Pte Ltd. 2021 Coal permeability

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tation and safe production of coal as well as coal seam gas .This book focuses on the mechanical properties and permeability of coal, and the gas flow in coal seams. Based on coal permeability models, it establishes different models for coal seam gas, from the linear flow model to the gas–solid coup

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ling flow model. It also provides the theoretical basis for the exploitation and safe production of coal as well as coal seam gas resources. As such, it is a valuable reference for researchers, advanced students and practitioners working in mining engineering and coalbed methane engineering.. .978-981-16-3897-8978-981-16-3895-4

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P. K. Ramachandran Nair,Vimala D. Nairchemistry effects (also known as the coal-forming process). Coal is mainly composed of organic matter and a small amount of inorganic minerals. The organic matter in coal is mainly composed of five elements; namely carbon, hydrogen, oxygen, nitrogen and organic sulfur, of which the carbon, hydrogen

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P. K. Ramachandran Nair,Vimala D. Nairion of coal; Generation of coal seam gas during coal metamorphism, basic composition of coal seam gas, and the existence forms of adsorbed gas and free gas. Controlling effect of magma intrusion on the coal metamorphism and coal seam gas occurrence.

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The Case Against Value-Free Belief,can be further divided into two types, surface force and body force. Surface force is applied to the coal surface, such as gas pressure, coal support force and the contact forces between different coal blocks. Body force, such as gravity and inertia force, is continuously distributed within the coal

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