掘进巷道风速对粉尘流场影响规律的数值模拟研究

Numerical simulation study of effects of velocity for drifting roadway on dust flow field

为研究掘进巷道中抽出式通风和压入式通风粉尘浓度的分布变化规律,采用ANSYS FLUNET软件模拟不同风速下的粉尘流场,确定巷道通风降尘的最佳风速,并比较这两种通风方式的降尘效果。通过模拟得出:当巷道断面积为12m^2,风筒口至工作面距离为3m时,压入式通风时最佳风速为0.41m/s;抽出式通风时最佳风速为0.50m/s。

The dust flow field at the different wind speed was simulated by ANSYS FLUNET to study the changing rule of the distribution of dust concentration for drawing-type exhaust venti- lation and forced ventilation in drifting roadway and to determine the best wind speed in ventilation and dust alleviation for the roadway with comparison of effects of dust alleviation for the two ventilation methods. By analyzing the data obtained through sim- ulation, it is concluded that when the sectional area of roadway is 12 m2 and the distance between cylinder and face is 3 m, the best speed in forced ventilation is 0. 41 m/s and the best speed in drawing-type ventilation is 0.50 m/s.