Numerical simulation study on air leakage law in goaf of Y-type ventilation
ZHOU Xiabing
CAI Feng
FENG Juqiang
Abstract：Aiming at the problems of spontaneous combustion of coal in the goaf and corner gas overrun on the working face,the air leakage law of the Y-shaped ventilation goaf under the condition of empty alley is ex-plored.Taking the 1010201 working face of Yuwang coal mine as the engineering background,combined with Fluent numerical simulation software,the three-dimensional void ratio of the goaf is set UDF,and the air leakage flow field,gas concentration of each component and spontaneous combustion"three zones"in the goaf are simu-lated,and the results are compared and analyzed.The results show that the air leakage in the goaf area is mainly concentrated in the upper and lower corner 50m range.The oxygen concentration in the goaf is related to the dis-tance from the working face and along the empty lane,and the closer the distance,the higher the concentration.
Keywords：Y-type ventilation systemmining areaair leakage lawalong the empty alleynumerical simulation
Publication Date：2024-04-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 13-19 )