Work

Deformation and heat transfer modelfor surrounding rock in thick loose layer-extra thick coal seam working face

Year: 2025

Type: article

Abstract: By using theoretical analysis and numerical calculation, the mechanical properties of the surrounding rock of the thick loose layer and extra thick coal seam comprehensive discharge face were deeply studied. The multi-parameter critical control equation for the sudden change of the roof plate along the working face was derived, and the influence of variables such as fracture block degree, rotation angle, breaking angle, friction factor and corner end extrusion coefficient on the stability of the roof ?rotation-slide? was obtained. A heat transfer model for the broken layers under the underground ventilation is proposed. This study has great significance for the safe mining and high yield and efficiency of the mine.

Source: Thermal Science

DOI: 10.2298/tsci2502095l

Authors: Fei Liu, Guang-Heng Ge, Peng Gong, Xin-Lei Fu

Institutions: Suzhou University, China University of Mining and Technology, State Key Laboratory for Geomechanics and Deep Underground Engineering

Language: English

Topic: Geomechanics and Mining Engineering

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $161

Funders: National Natural Science Foundation of China, Government of Jiangsu Province