TY - JOUR
TI - On distribution characteristics of the temperature field and gas seepage law of coal in deep mining
AU - Yang Ming-Qing
AU - Xie He-Ping
AU - Gao Ming-Zhong
AU - He Zhi-Qiang
AU - Li Cong
AU - Xie Jing
AU - Lu Yi-Qiang
AU - Yang Ben-Gao
JN - Thermal Science
PY - 2020
VL - 24
IS - 6
SP - 3923
EP - 3931
PT - Article
AB - The study of gas seepage under the condition of multifield coupling has  always been an important topic in coal mining. Based on the theory of  multifield coupling and the research method of numerical simulation, the  influences of the stress and temperature fields on the seepage field under  the conditions of deep coal mining are studied. With the example of the  J15-31030 deep working face from mine No. 12 in the Pingdingshan Coal Mine,  modeling and finite element analysis are carried out. The influences of the  mining stress field and temperature field on the gas seepage field are  preliminarily revealed. The results show that the closer to the working  face, the greater the velocity of the seepage field is, and the greater the  gradient of velocity change. There is a clear negative correlation between  the mining stress field and the permeability of the seepage field. The  larger the excavation length is, the greater the change gradient of the rock  permeability near the working face is. The temperature field has a  significant impact on the adsorbed gas in the seepage field. These research  results provide the corresponding basis for the safety control and effective  mining of coal mine gas.