Research on dust diffusion reduction-control technology of wind guide hood system based on an improved tunnel pressurized air system

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment Pub Date : 2025-03-24 DOI:10.1016/j.scitotenv.2025.178966

Haonan Zhang, Xinpeng Liu, Yun Hua, Qiang Liu, Lidian Guo, Chuanxing Cheng, Zilian Zhu, Yuankun Cai, Shihao Liu

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Abstract

The dust generated during tunnel construction poses a serious threat to the health of construction workers. High dust concentrations rapidly spread throughout the tunnel, severely polluting the construction environment. To improve these conditions, the present study sought to develop a wind volume-wind direction guide device, hereinafter referred to as wind guide hood (WGH), which can regulate the pressure air volume in real time. The WGH ventilation and dust control system divides the wind volume into two parts while maintaining a total pressurized air volume of 500 m³/min. One part of the wind volume flows to the digging working face through a pressurized air cylinder, whereas the other part is discharged to the back side of the tunnel, thus achieving dust control. By separating the airflow, the system minimizes the airflow to the face, thereby slowing down dust diffusion. The results revealed that installing the WGH system effectively controls dust propagation. When the airflow to the face is 20 m³/min, the diffusion distance of high-concentration dust is reduced to 18.7 m, and the dust control efficiency is increased by 68.04 %, thereby greatly improving the working conditions within the tunnel.

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来源期刊

Science of the Total Environment 环境科学-环境科学

CiteScore

17.60

自引率

10.20%

发文量

8726

审稿时长

2.4 months

期刊介绍： The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.