In order to control the dust pollution produced by air leg rock drill in the trolley area during the excavation of long-distance single ended tunnel, the full-scale physical model of working face was established by using FLUENT software, and the numerical simulation analysis of tunnel drilling ventilation and dust removal parameters was carried out. The results show that it is difficult to control the dust pollution of the face by conventional ventilation, and the drilling dust is distributed in the range of 10 m from the face; after the introduction of the long pressure and short suction ventilation scheme, when the ratio of compressed air volume to exhaust air volume is 0.72, the height of the pressure fan is 2.5 m, the distance between the pressure fan and the palm face is 20 m, and the exhaust fan is 12 m away from the palm, the dust concentration control efficiency of the working face is increased by about 60%. Therefore, in the similar long-distance single head tunnel construction, it is appropriate to adopt the dust removal method of long-distance short suction and exhaust fan to ensure the working environment.

为了控制长距离单端隧道开挖过程中台车区域的气腿凿岩机产生的粉尘污染，利用FLUENT软件建立了工作面的全尺寸物理模型，并进行了数值模拟分析。进行了隧道钻的通风除尘参数。结果表明，常规通风难以控制工作面的扬尘污染，钻探扬尘分布在距工作面10 m范围内。引入长压短吸通风方案后，当压缩空气量与排气量之比为0.72时，压力风扇的高度为2.5 m，压力风扇与手掌之间的距离为20 m ，并且排气扇距离手掌12 m，工作面的粉尘浓度控制效率提高了约60％。因此，在类似的长距离单头隧道施工中，宜采用长距离短吸排风机的除尘方法，以确保工作环境。