不同通风方式对高地温施工隧道通风降温效果影响研究
Study on the Influence of Different Ventilation Methods on the Ventilation and Cooling Effect of High Ground Temperature Construction Tunnel
张庆明 1杨寿忠 2向兵 2纪秋林 3易东 4李林杰 4黄锋4
作者信息
- 1. 重庆大学 土木工程学院,重庆 401331;重庆城建股控(集团)有限责任公司,重庆 400012
- 2. 重庆交通建设(集团)有限责任公司,重庆 401121
- 3. 重庆城建股控(集团)有限责任公司,重庆 400012
- 4. 重庆交通大学 土木工程学院,重庆 400074
- 折叠
摘要
为了对比不同的通风条件下高地温隧道施工通风降温的效果,利用Fluent建立侧壁压入式通风和混合式通风模型,进行了数值模拟.同时研究了高地温隧道在两种通风方式下隧道内温度和降温速度的分布规律,对比两种通风方式的优缺点,得出降温效果较好的通风方式.结果表明:对于高地温隧道施工,风流速度越大降温效果越明显,且相比于混合式通风,侧壁压入式通风更能有效降低掌子面附近温度,提高施工的安全性和效率,而混合式通风能同时对掌子面和隧道进口附近降温.
Abstract
In order to compare the cooling effect of ventilation in high ground temperature tunnel construction under different ventilation conditions,fluent was used to establish sidewall press-in ventilation and hybrid ventilation models,and numerical simulations were carried out.At the same time,the temperature and velocity distribution law of the tunnel under the two ventila-tion modes of the high ground temperature tunnel were studied,and the advantages and disadvantages of the two ventilation meth-ods were compared,and the ventilation method with better cooling effect was obtained.The results showed that for the construc-tion of high ground temperature tunnel,the larger the airflow velocity is,the more obvious the cooling effect is.Compared with the hybrid ventilation,the side wall press-in ventilation can effectively reduce the temperature near the tunnel face and improve the safety and efficiency of the construction,while the hybrid ventilation can cool the tunnel face and the tunnel entrance at the same time.
关键词
隧道通风/通风降温/数值模拟/高地温隧道/通风风速Key words
tunnel ventilation/ventilation cooling/numerical simulation/high temperature tunnels/ventilation air speed引用本文复制引用
基金项目
重庆市教委科学技术研究项目(KJZD-K202300713)
重庆市研究生联合培养基地项目(JDLHPYJD2020018)
出版年
2024
NETL
NSTL
维普
万方数据