矿井进风井与水平联巷的局部降阻数值模拟

Numerical Simulation on Local Resistance Reduction Between Intake Shaft and Horizontal Crossheading

为降低矿井进风井筒与水平联巷间的局部阻力,以北洺河铁矿东部进风井为研究对象,用弧形转弯代替直角转弯,采用Gambit建立巷道物理模型并划分网格,利用Fluent进行改造前后的数值模拟。结果表明:弧形转弯较直角转弯处压力集中现象缓解,涡流能量损失减小,改造后转弯处的局部阻力降低了约82.14%,井筒阻力降低了约17.04%,降阻效果明显。研究结论可为相同或相类似的情况提供参考。

In order to reduce the local resistance between the intake shaft and the horizontal crossheading, a numerical simulation using the curved turn instead of the right angle turn was conducted in the eastern intake shaft of Beiminghe Iron Mine. In this process, Gambit was used to establish the physical model and to divide the grid, and Fluent was applied for numerical simula- tion before and after the transformation. The results showed that the pressure concentration phenomenon in the curved turn was less compared with that in the right angle turn, and the energy loss caused by eddy current was reduced. After transformation, the local resistance at the turn was reduced by 82.14~ and the shaft resistance was reduced by 17.04%, with a good effect of resistance reduction. The results of the study can provide reference for the same or similar situation.