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通风除尘系统在掘进巷道中起着重要作用,而其风筒布置情况严重影响除尘效率,但因为实验投入大、风险高,所以CFD数值分析方法成为现场优化除尘系统布置情况的一种有力补充。因此针对某实际掘进巷道及其长压短抽通风除尘系统,基于ICEM软件建立了巷道三维模型并对其进行网格划分,然后运用FLUENT 15.0软件非稳态DPM模型对巷道长压短抽除尘系统的正、负压风筒参数进行了数值优化。结果表明,针对该实际巷道,当正压风筒出口、负压风筒吸口距掘进面距离分别为8 m和2 m;正、负压风筒距巷道底板高度分别为2.2 m和1 m;正压风筒直径较小时,掘进面附近除尘效率较高。
Ventilation and dust removal system plays an important role in tunneling, and the layout of the duct seriously affects the efficiency of dust removal. However, due to the large investment and high risk, the CFD numerical analysis method is a powerful supplement to optimize the layout of the dust removal system in the field. Therefore, for a practical roadway and its short-circuit ventilation and dust removal system, a three-dimensional roadway model is established and meshed based on the ICEM software. Then, using FLUENT 15.0 unsteady DPM model, The positive and negative pressure tube parameters were numerical optimization. The results show that for the actual roadway, when the outlet of the positive pressure blower and the outlet of the negative pressure blower are 8 m and 2 m away from the driving face respectively, the heights of the positive and negative pressure blower cylinders from the roadway floor are respectively 2.2 m and 1 m; When the diameter of the positive pressure blower is small, the dust removal efficiency is higher near the heading face.