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深凹露天矿采场内的复环流结构是形成露天坑内高污染的重要机制。为改善深凹露天矿的通风条件,减少坑内污染,在露天矿宽深比一定的条件下,利用Fluent模拟软件,对来流风速和背风帮边坡角对复环流结构形成的影响进行了数值模拟研究。结果表明,边坡角增大,复环流的范围会增大;风速增大,复环流的范围也会增大,但在风速增大的条件下,坑底风速也会相应增大。
The complex recirculation structure in the stope of deep open pit is an important mechanism to form high pollution in open pit. In order to improve the ventilation condition of deep open pit mine and reduce the pollution in the pit, the effects of the incoming wind speed and the leeward side slope angle on the formation of the compound circulation structure were studied using the Fluent simulation software under the condition of the aspect ratio of the open pit mine. Simulation study. The results show that the range of complex circulation increases with the increase of slope angle, and the range of complex circulation increases with the increase of wind speed. However, with the increase of wind speed, the velocity of bottom of the pit increases accordingly.