A comprehensive study on fracture behavior and its impact on gas emissions in high-temperature coal seams under coupled thermo-hydro-mechanical condition DOI Creative Commons
Huan Liu,

Baoshan Jia,

Kaiwen Zhang

и другие.

AIP Advances, Год журнала: 2025, Номер 15(5)

Опубликована: Май 1, 2025

Temperature changes in high-temperature mining operations strongly affect gas desorption, migration, and outburst behavior coal seams. Under these conditions, desorbs more quickly from the matrix spreads rapidly through fracture networks, which increases emissions. At same time, roughness, caused by temperature, pressure, adsorption–desorption processes, stress, further influence patterns. To capture interactions, we propose a thermo-hydro-mechanical model based on porous media theory that treats roughness as factor linked to permeability. By integrating permeability flow functions of effective stress porosity, this offers clear way study how affects outbursts under multiple combined factors. Validation numerical simulations show proposed parameter accurately describes structure. These then permeability, desorption intensity. Higher temperatures boost activity promote migration. However, extremely high can cause fractures close, lowers findings provide important support for ventilation design safety assessments mining.

Язык: Английский

A comprehensive study on fracture behavior and its impact on gas emissions in high-temperature coal seams under coupled thermo-hydro-mechanical condition DOI Creative Commons
Huan Liu,

Baoshan Jia,

Kaiwen Zhang

и другие.

AIP Advances, Год журнала: 2025, Номер 15(5)

Опубликована: Май 1, 2025

Temperature changes in high-temperature mining operations strongly affect gas desorption, migration, and outburst behavior coal seams. Under these conditions, desorbs more quickly from the matrix spreads rapidly through fracture networks, which increases emissions. At same time, roughness, caused by temperature, pressure, adsorption–desorption processes, stress, further influence patterns. To capture interactions, we propose a thermo-hydro-mechanical model based on porous media theory that treats roughness as factor linked to permeability. By integrating permeability flow functions of effective stress porosity, this offers clear way study how affects outbursts under multiple combined factors. Validation numerical simulations show proposed parameter accurately describes structure. These then permeability, desorption intensity. Higher temperatures boost activity promote migration. However, extremely high can cause fractures close, lowers findings provide important support for ventilation design safety assessments mining.

Язык: Английский

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