摘要
白茫雪山3号隧道地处迪庆藏族自治州德钦县白马雪山自然保护区境内,隧道高程在4000m以上,全长3951m。隧址位于高海拔寒区,自然条件恶劣,空气稀薄,人员容易缺氧,严重影响施工进度。本文采用数值模拟、现场测试对白茫雪山3号隧道内氧气浓度进行了系统分析,得到了隧道氧气浓度的分布规律,并提出了相应的预测模型。将预测模型计算结果与现场测试结果对比,发现预测模型模型计算结果与现场实测值相符度较高,具有一定适用性。因此,该模型对现场施工人员供氧量的确定具有一定的指导意义,同时也可为类似工程提供参考。
Baimang snow mountain no.3 tunnel is located in Baimang snow mountain nature reserve,Deqin county,Diqing Tibetan autonomous prefecture.The height of the tunnel is above 4000 m and the total length is 3951 m.The tunnel site locates in the high altitude cold area,the natural condition is bad,the air is thin,the personnel is easy to lack of oxygen,seriously affects the construction schedule.In this paper,the oxygen concentration in No.3 tunnel of Baimang snow mountain is analyzed by numerical simulation and field test.By comparing the calculated results of the prediction model with the field test results,it is found that the calculated results of the prediction model are highly consistent with the measured values in the field and have certain applicability.Therefore,this model has certain guiding significance to the determination of oxygen supply for site construction personnel,and it can also provide reference for similar projects.
作者
肖三民
XIAO Sanmin(The 2nd Engineering Co.,Ltd.of China Railway 12th Bureau Group,Taiyuan,Shanxi 030032,China)
出处
《施工技术》
CAS
2019年第S01期747-750,共4页
Construction Technology
关键词
隧道施工
高海拔
寒区
数值分析
预测模型
tunnel construction
high altitude
cold region
simulation analysis
predication model
