Experimental study of simulated flue gas flow in coal mine roaduay based on 3DPIV technology
ZOU Yongming
WANG Yinhui
TIAN Fuchao
ZHAO Yueran
Abstract：In order to study the characteristics of smoke flow when fire occurs in underground coal mines,and then accurately ana-lyze the state of smoke flow,the flow state of the flue gas in the natural state at 10 s is simulated in this paper to determine the ap-proximate stage of the ignition and smoke production,which is used as a reference for the subsequent experiments;the 3-dimension-al particle image velocimetry(3DPIV)was utilized to photograph the open,closed and sealed conditions of the tunnel,and the start/stop control of the fan with a fixed wind speed of 1 m/s was combined to study the motion of the smoke flow under different conditions.The results show that:the open smoke flow of the roadway is relatively simple,and once the roadway is closed,the smoke cannot be diffused,and complex flow changes will occur in high concentration of smoke,such as laminar flow,excessive flow,turbulence,countercurrent and bifurcation of the smoke flow,etc.When the roadway is closed and sealed,the smoke flow"gushing"will occur.At this moment,the flow state of the smoke flow is complex and changeable,but the smoke flow will be stable after a certain period of time.
Keywords：mine fireflue gas flowsimulation roadway3DPIVair stopping unsealed
Publication Date：2024-08-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 72-79 )