隧道施工中障碍物特性对通风影响的数值模拟

IF 4.2 2区工程技术 Q1 ENGINEERING, CIVIL

Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-07-15 DOI:10.1016/j.jweia.2025.106178

Xiaoke Chang , Jieying Qiao , Rong Yang , Jianxi Ren

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引用次数: 0

摘要

在隧道的建设过程中会释放出许多污染物。脚手架和机车形成的障碍物对污染物排放的影响是不容忽视的。准确估算施工期间隧道通风所需风量，有助于保证施工安全高效，对资源利用和经济可持续发展具有重要作用。本文采用数值方法建立了具有不同障碍物参数的隧道模型。分别讨论了阻塞长度、阻塞位置和阻塞率。结果表明：风机的能量损失与堵塞率和障碍物长度成正比，与障碍物与工作面之间的距离成反比。根据隧道内污染物的排放机理，考虑障碍物对风机能耗的影响，推导出隧道消除烟气所需风量的修正公式。本研究内容为准确估算风量需求提供了理论依据，对优化施工期间通风系统运行，降低能耗，减少碳排放具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Numerical simulation on the influence of obstruction characteristics on ventilation during tunnel construction

Many pollutants will be released during the construction of the tunnel. The obstructions formed by scaffolding and locomotives have an impact on the emission of pollutants that is difficult to ignore. Accurately estimating the required air volume of tunnel ventilation during construction period is helpful to ensure construction safety and efficiency, and plays an important role in resource utilization and economic sustainability. In this study, a tunnel model with different obstruction parameters was established by numerical method. The length of obstruction, the location of obstruction and the blocking rate were discussed respectively. The results show that the energy loss of the fan is proportional to the blocking rate and the length of the obstruction, and inversely proportional to the distance between the obstruction and the working face. Based on the discharge mechanism of pollutants in the tunnel, the modified formula of the air volume required for the tunnel to eliminate the smoke is derived considering the influence of the obstruction on the energy consumption of the fan. The content of this study provides a theoretical basis for estimating the accurate air demand, which is of great significance for optimizing the operation of the ventilation system during the construction period, reducing power consumption and reducing carbon emissions.

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来源期刊

Journal of Wind Engineering and Industrial Aerodynamics 工程技术-工程：土木

CiteScore

8.90

自引率

22.90%

发文量

306

审稿时长

4.4 months

期刊介绍： The objective of the journal is to provide a means for the publication and interchange of information, on an international basis, on all those aspects of wind engineering that are included in the activities of the International Association for Wind Engineering http://www.iawe.org/. These are: social and economic impact of wind effects; wind characteristics and structure, local wind environments, wind loads and structural response, diffusion, pollutant dispersion and matter transport, wind effects on building heat loss and ventilation, wind effects on transport systems, aerodynamic aspects of wind energy generation, and codification of wind effects. Papers on these subjects describing full-scale measurements, wind-tunnel simulation studies, computational or theoretical methods are published, as well as papers dealing with the development of techniques and apparatus for wind engineering experiments.