高海拔特长公路隧道洞内环境现场试验研究
发布时间:2018-03-02 03:32
本文关键词: 高海拔 隧道 洞内环境 现场试验 出处:《施工技术》2017年S1期 论文类型:期刊论文
【摘要】:为应对高海拔、低气温、低含氧量及低气压环境下白茫雪山3号隧道施工难题,开展隧道洞内湿度、温度、氧气及一氧化碳浓度环境现场试验研究。结果表明,洞内湿度能稳定在80%左右,洞内温度多在10℃以上,满足混凝土强度增长要求,但需加强冬季洞内环境温度场监测;隧道掘进400m以后,O2浓度成线性降低,CO浓度急剧增大,均不满足规范规定值,需加大通风量。其结论可为高海拔特长隧道设计施工提供一定参考和借鉴。
[Abstract]:In order to deal with the difficult problems in the construction of No. 3 Tunnel at high altitude, low temperature, low oxygen content and low pressure, the environmental tests of humidity, temperature, oxygen and carbon monoxide concentration in the tunnel tunnel were carried out. The humidity in the tunnel can be stabilized at about 80%, and the temperature in the tunnel is more than 10 鈩,
本文编号:1554867
本文链接:https://www.wllwen.com/kejilunwen/daoluqiaoliang/1554867.html