Abstract In order to avoid pneumoconiosis and other hazards caused by excessive concentrations of dust in construction tunnels, this paper applies CFD numerical simulation, in combination with field measurements, to study the dust control effect of a construction tunnel under the different parameters of ventilation system. Firstly, the distance between the secondary air pressure inlet and the tunnel face (Lp) in the ventilation system was studied, then the airflow transport and dust pollution and diffusion were analyzed in eight positions, before the actual results of the analysis were measured on site. The results of the CFD model were validated with field measurements in a construction tunnel, with both fully concurring, thereby demonstrating the developed simulation strategy's high-level of accuracy. The optimal range obtained regarding the distance between the secondary air pressure inlet and the tunnel face was 30 m–40 m. Moreover, the dust pollution and dispersion distance was controlled at a range of 51.10 m–54.31 m, the dust concentration ranged from 1.32 mg/m3 to 13.12 mg/m3, and therefore the dust control effect was superior. Furthermore, the research methods and findings are of great significance and provide references for the effective prevention of a construction tunnel's dust and cleaner production.

中文翻译：

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施工隧道有效粉尘控制策略研究：通风系统对清洁生产的影响

摘要 为避免施工隧道粉尘浓度过高引起尘肺等危害，本文应用CFD数值模拟，结合现场实测，研究不同通风系统参数下施工隧道的粉尘控制效果。首先对通风系统中二次风压力入口与隧道掌子面的距离（Lp）进行了研究，然后对8个位置的气流输送和粉尘污染扩散进行了分析，然后对分析的实际结果进行了现场测量。 . CFD 模型的结果通过施工隧道中的现场测量得到验证，两者完全一致，从而证明了所开发的模拟策略的高精度。二次风压力入口与隧道掌子面距离的最佳范围为 30 m~40 m。此外，粉尘污染扩散距离控制在51.10 m~54.31 m范围内，粉尘浓度控制在1.32 mg/m3~13.12 mg/m3，控尘效果较好。此外，该研究方法和成果对有效防治施工隧道扬尘和清洁生产具有重要意义和借鉴意义。