LIU Zhao-chun, CHAI Jun-rui, JIA Xiao-mei, et al. Numerical simulation of concentration diffusion of harmful gas in heading face with forced ventilation[J]. 2009, 30(S2).
LIU Zhao-chun, CHAI Jun-rui, JIA Xiao-mei, et al. Numerical simulation of concentration diffusion of harmful gas in heading face with forced ventilation[J]. 2009, 30(S2).DOI:
The diffusion of harmful gas is carried out by using numerical simulation of 3-D space under condition of forced ventilation
with the CFD module of ADINA
the software of large-scale finite elements. The flow framework of forced ventilation of tunnel has been obtained. Several vortexes are distributed nearby the heading face
which has great influence on diffusion of harmful gas. The concentration of harmful gas is highest in vortexes center
combining theoretical analysis
the variation discipline of the harmful gas is obtained with the ventilation time. This paper provides the criteria for effective ventilation in heading face of tunnel