Wall-mounted swirling ventilation is a new type of system in mechanized excavation faces with a dust suppression performance that is closely related to the blowing-to-suction flow ratio. Physical and simulation models were developed according to the No. C103 mechanized excavation face in the Nahe Coal Mine of the Baise Mining Bureau, Guangxi Province to optimize the blowing-to-suction flow ratio for wall-mounted swirling ventilation. Both the k-ε turbulence model and the discrete phase model were utilized to simulate airflow field structures and dust concentration distribution patterns at various blowing-to-suction flow ratios. The results suggest that higher blowing-to-suction flow ratios increase the airflow field disturbance around the working face and weaken the intensity of the axial air curtain. On the other hand, both the intensity of the radial air curtain and the dust suppression effect are enhanced. At a blowing-to-suction flow ratio of 0.8, the wall-mounted swirling ventilation system achieved the most favorable dust suppression performance. Both the total dust and respirable dust had their lowest concentrations with maximum efficiencies of reducing both types at 90.33% and 87.16%, respectively.

壁挂式旋转通风是机械化采掘工作面中的一种新型系统，其抑尘性能与吹吸比密切相关。根据广西百色矿业局那合煤矿C103号机械化采煤工作面，开发了物理模型和模拟模型，以优化壁挂式旋转通风的吹吸比。既k-ε利用湍流模型和离散相模型模拟了不同吹吸比下的气流场结构和粉尘浓度分布模式。结果表明，较高的吹吸比会增加工作面周围的气流场干扰并削弱轴向气帘的强度。另一方面，径向气幕的强度和抑尘效果均得到增强。吹吸风比为0.8时，壁挂式旋转通风系统实现了最有利的抑尘性能。总粉尘和可吸入粉尘都具有最低的浓度，最大的降低两种粉尘的效率分别为90.33％和87.16％。