Application of the twin-tube complementary ventilation system in large-slopping road tunnels in China

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Ventilation Pub Date : 2020-01-02 DOI:10.1080/14733315.2018.1549305

Ya-Qiong Wang, Shuoshuo Xu, Rui Ren, Shuangzhuo Zhang, Z. Ren

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引用次数: 15

Abstract

Abstract To solve the imbalanced problem of wind pressure between left tunnel and right tunnel in the large-slopping tunnel, the complementary ventilation system is proposed, and the design theory and calculation method are also discussed. Results from a experiment carried out in a model tunnel (1:10) with complementary ventilation are presented and applied to the Dabieshan tunnel. It is found that the twin-tube complementary ventilation system can bridge two tunnels and exchange air between tunnels to ensure adequate air quality. The fresh air in the downhill tunnel can be transfer into the uphill tunnel to dilute air in the uphill tunnel. Field measurements were performed in the Dabieshan tunnel on wind speed, CO concentration, and VI (visibility index) concentration. Measurement results also indicate that the twin-tube complementary ventilation system can meet the ventilation requirements for tunnels. Compared with traditional ventilation systems, the complementary ventilation can be used to ensure adequate air quality in tunnels by eliminating the ventilation shaft in uphill tunnel and saving initial investments and operation costs.

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双管互补通风系统在国内大坡度公路隧道中的应用

摘要为解决大坡度隧道左、右风压不平衡问题，提出了互补通风系统，并对其设计理论和计算方法进行了探讨。本文介绍了在模型隧道(1:10)中进行的互补通风试验结果，并将其应用于大别山隧道。研究发现，双管互补通风系统可以架起两个隧道，并在隧道间进行空气交换，以保证足够的空气质量。下坡隧道的新鲜空气可以被输送到上坡隧道中，以稀释上坡隧道中的空气。在大别山隧道进行了风速、CO浓度和VI(能见度指数)浓度的实测。实测结果也表明，双管互补通风系统能够满足隧道的通风要求。与传统的通风系统相比，采用互补通风可以消除上坡隧道的通风竖井，保证隧道空气质量，节省初期投资和运行费用。

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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来源期刊

International Journal of Ventilation CONSTRUCTION & BUILDING TECHNOLOGY-ENERGY & FUELS

CiteScore

3.50

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： This is a peer reviewed journal aimed at providing the latest information on research and application. Topics include: • New ideas concerned with the development or application of ventilation; • Validated case studies demonstrating the performance of ventilation strategies; • Information on needs and solutions for specific building types including: offices, dwellings, schools, hospitals, parking garages, urban buildings and recreational buildings etc; • Developments in numerical methods; • Measurement techniques; • Related issues in which the impact of ventilation plays an important role (e.g. the interaction of ventilation with air quality, health and comfort); • Energy issues related to ventilation (e.g. low energy systems, ventilation heating and cooling loss); • Driving forces (weather data, fan performance etc).