Unlocking Coal Gas from Interactions: Promoting Safe and Efficient Resources Recovery
A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Resources and Sustainable Utilization".
Deadline for manuscript submissions: closed (28 August 2023) | Viewed by 7125
Special Issue Editors
Interests: gas extraction; coal spontaneous combustion and its prevention; coupling modelling
Interests: rock mechanics; fault reactivation; THMC coupling modelling; hydraulic fracturing; EGS development
Interests: rock mechanics; fault reactivation; THMC coupling modelling; hydraulic fracturing; EGS development
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Advances in our understanding of coal–gas interactions have stimulated the design of effective measures to retard or suppress coal–gas disasters and enhance potential resource utilization. Coal–gas disasters pose difficult, persistent and costly problems to the coal mining industry worldwide, resulting in casualties, perilous land subsidence and massive environmental contamination. Coal–gas disasters include coal–gas outbursts, spontaneous coal combustion and even gas explosion, among other consequences. Coalbed methane is also an important energy resource. A fundamental understanding of coal–gas interactions is essential to eliminating their potential risks as mining hazards and to invest in their potential as an unconventional gas resource.
Coal-gas interactions are a chain of physicochemical reactions in coal reservoirs, labeled as “coupled processes”, implying that one reaction process affects the initiation and progress of others. This reaction chain is linked through dominant mechanisms, including compositional gas flow and diffusion, reaction kinetics, energy transport and coal deformation. Each individual process, in the absence of cross couplings, forms the basis of well-known disciplines, such as hydrology, chemistry, elasticity and heat transfer. Such interactions have been investigated through experiments and numerical simulations, but their mechanisms in multiscale and multifield couplings remain obscure. Bridging this knowledge gap could have a critical impact on enhancing mining safety, utilizing the potential of gas resource recovery and reducing its associated environmental risks.
This Special Issue, “Unlocking Coal Gas from Interactions: Promoting Safe and Efficient Resources Recovery ”, will focus on the impact of coal–gas interactions on flow behaviours and safe and efficient resource recovery. It will serve as a platform for international researchers from different disciplines to exchange knowledge and innovative solutions and to explore emerging technologies in key areas of coal and gas exploitation. This Special Issue welcomes the submission of relevant research papers.
The presented papers will present a diversity of new theories, experiments and engineering practices in coal–gas resource recovery as it relates to fluid flow. Potential topics include, but are not limited to:
- Physical behaviour of natural gas flow in coal
- Gas–water–coal interactions in coal
- The role of fluids in enhanced gas recovery;
- Impact of macro- and micro-scale coal structure on gas flow;
- Geomechanics in coal gas extraction;
- Thermal impact on gas–rock interactions in coal;
- High-efficiency methods and technology increasing permeability of coal seam;
- Theory and technology of efficient development and utilization of coal gas resources;
- Gas accumulation and migration mechanisms in abandoned mines.
Dr. Tongqiang Xia
Prof. Dr. Jianguo Wang
Prof. Dr. Quan Gan
Dr. Guangyao Si
Guest Editors
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Keywords
- gas flow
- coal spontaneous combustion
- coal-gas interactions
- coal permeability
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