TY - JOUR
TI - Simulation study on stress-seepage coupling of coal
AU - Gao Xiang-He
AU - Gao Feng
AU - Zhang Ning
AU - Niu Yue
AU - Ren Kai-Feng
AU - Yang Zheng-Min
JN - Thermal Science
PY - 2025
VL - 29
IS - 2
SP - 1411
EP - 1416
PT - Article
AB - Mining significantly affects the mechanical properties and structure of coal  seams and increases the risk of disasters such as coal and gas outburst. Gas  extraction is the key technology of disaster prevention and resource  utilization. In this study, a damage elastoplastic constitutive model was  developed, and the stress-strain change of rock was simulated by finite  element program. Through the simulation of drilling gas extraction, it is  found that the gas pressure increases with the increase of the distance from  the center of the borehole, and the pressure drop decreases. These findings  have practical significance for the prevention and control of gas disasters.