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为改善大断面掘进巷道内通风除尘效果,针对龙王沟煤矿副斜井净断面积24.9 m2、供风量1 500 m3/min的情况,采用计算流体软件Fluent,建立长压短抽混合式通风条件下稳态离散相模型(DPM),研究压、抽风筒口相对位置和压抽风量配比对粉尘-风流耦合运移的影响。结果表明,当压入式风筒口到工作面距离为27.5 m,抽出式风筒口到工作面距离为5.0 m,压抽比为1.2时,龙王沟煤矿副斜井大断面综掘巷道内风流稳定,综合除尘效果最佳,模拟结果与现场实测结果基本一致。
In order to improve the ventilation and dust removal effect in roadways with large cross-sections, aiming at the situation that the net cross-sectional area of Longwanggou coal mine is 24.9 m2 and the supply air volume is 1 500 m3 / min, CFD software Fluent is used to establish long- The steady state discrete phase model (DPM) is used to study the influence of the pressure, the relative position of the exhaust nozzle and the pressure ratio on the coupling of dust and wind flow. The results show that when the pressure from the blower to the working face is 27.5 m, the distance between the suction blower and the working face is 5.0 m, and the pressure-pumping ratio is 1.2, the wind flow in the large-section fully mechanized culvert in Longyangou coal mine is stable , The best comprehensive dust removal, the simulation results and the field measured results are basically the same.