Abstract：The plateau spiral tunnel is affected by factors such as low air pressure, thin air and curve radius. The CO transport law in the spiral tunnel is different from that in the conventional tunnel. Based on the Wolonggou No. 1 tunnel project, the Fluent software was used to simulate and analyze, and the spatial distribution law and distribution characteristics of the CO concentration field in the spiral tunnel of the plateau area were obtained by the comparative analysis of the plateau spiral tunnel with the conventional tunnel. Meanwhile, the reliability of the results was verified by combining with the monitoring data of site. And the increase rate of ventilation safety time of the spiral tunnel with R=700m at each altitude compared with that of conventional tunnel was obtained, which can be used as reference basis for tunnel ventilation. According to the calculation results, the relevant measures for the ventilation management of the spiral tunnel in the plateau area were proposed.
［1］ 吕辉. 高原区特长公路隧道施工通风技术研究［D］. 北京：北京交通大学, 2017.
LYU Hui. Research on Construction Ventilation Technology of Extra Long Highway Tunnel in Plateau Area ［D］. Beijing: Beijing Jiaotong University, 2017.
［2］ 张玉伟, 谢永利, 赖金星, 等. 压入式通风模式下高原隧道有害气体分布特征研究［J］. 铁道科学与工程学报, 2016, 13(10):1994-2000.
ZHANG Yuwei, XIE Yongli, LAI Jinxing, et al. Study on the distribution characteristics of harmful gases in plateau tunnels under press-in ventilation mode［J］. Journal of Railway Science and Engineering, 2016, 13(10): 1994-2000.
［3］ 刘钊春. 独头掘进隧道施工通风数值模拟［D］. 西安：西安理工大学, 2010.
LIU Zhaochun. Numerical Simulation of Ventilation in a Single Tunneling Tunnel ［D］. Xian :Xian University of Technology, 2010.
［4］ 刘新文. 浅谈高海拔条件下长距离独头通风技术［J］. 价值工程, 2018, 37(22):153-157.
LIU Xinwen. Talking about long-distance single-head ventilation technology under high altitude conditions ［J］. Value Engineering, 2018, 37(22): 153-157.
［5］ 杨立新. 现代隧道施工通风技术［M］. 北京：人民交通出版社, 2012.
YANG Lixin. Modern Tunnel Construction Ventilation Technology ［M］. Beijing:China Communications Press, 2012.
［6］ L.普朗特, K.奥斯瓦提奇, K.维格哈特.流体力学概论［M］.郭永怀,陆士嘉,译.北京:科学出版杜,2016.
PRANDTL L, OSWALDI K, VIGHART K. Fuhrer Durch Die Stromungslehre ［M］. GUO Yonghuai, LU Shijia, translate. Beijing: Science Press ,2016.
［7］ 王峰, 王明年, 刘祥, 等. 高海拔隧道施工环境CO浓度控制标准研究［J］. 地下空间与工程学报, 2018, 14(4):217-221.
WANG Feng, WANG Mingnian, LIU Xiang, et al. Research on CO concentration control standard for high altitude tunnel construction environment［J］. Chinese Journal of Underground Space and Engineering, 2018, 14(4): 217-221.
［8］ 张聪. 在建特长隧道洞内CO气体分布规律及防控对策研究［D］. 长沙：中南大学, 2013.
ZHANG Cong. Research on CO Gas Distribution Law and Prevention and Control Countermeasures in Tunnels under Construction［D］.Changsha: Central South University, 2013.
［9］ 曹正卯. 长大隧道与复杂地下工程施工通风特性及关键技术研究［D］. 成都：西南交通大学, 2016.
CAO Zhengmao. Research on Construction Ventilation Characteristics and Key Technologies of Long Tunnels and Complex Underground Engineering ［D］. Chengdu: Southwest Jiaotong University, 2016.
［10］ 高峰, 张捷, 连晓飞,等. 螺旋隧道独头掘进压入式通风参数研究［J］. 重庆交通大学学报(自然科学版), 2019, 38(4):45-50.
GAO Feng, ZHANG Jie, LIAN Xiaofei, et al. Research on the parameters of pressure ventilation in the spiral tunnel single heading ［J］. Journal of Chongqing Jiaotong University (Natural Science), 2019, 38 (4): 45-50.
［11］ 李明, 幸垚, 刘农. 雪山梁高原特长隧道施工通风关键技术三维数值模拟［J］. 公路, 2017(11):289-294.
LI Ming, XING Yao, LIU Nong. Three-dimensional numerical simulation of key technology for construction ventilation of Xueshan Liang plateau extra long tunnel ［J］ . Highway, 2017 (11): 289-294.
2020, Vol. 39 
