非煤系地层隧道多种混合有害气体实时监测技术  

Real-time monitoring technology of mixed harmful gases in non-coal measures strata

作　　者：赵宇 苏培东[2] 全斐 赵春杰 沈家君 Zhao Yu;Su Peidong;Quan Fei;Zhao Chunjie;Shen Jiajun(Dalin Railway Project Department of China Railway Ten Bureau Group Co.,Ltd.,Lincang 675800,China;College of Earth Sciences and Technology,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中铁十局集团有限公司大临铁路项目部,云南临沧675800 [2]西南石油大学地科院,四川成都610500

出　　处：《山西建筑》2022年第13期11-15,21,共6页Shanxi Architecture

基　　金：四川省科技厅应用基础研究项目(19YYJC1060);中国中铁股份有限公司科技研究开发计划(2018-引导-45)共同资助。

摘　　要：非煤系地层隧道中有害气体较为罕见,然而大临铁路红豆山隧道穿越非煤系地层有害气体突出。为了避免施工过程有害气体对人体伤害,通过对氧气、瓦斯、一氧化碳、二氧化碳、硫化氢、二氧化硫、氨气、二氧化氮、氢气九种有害气体特性进行研究。分析、归纳了红豆山隧道多种混合有害气体逸出特征、气体成分、气体发生条件、危害方式等特性。采用自动监测和人工监测两种监测方式,在隧道的拱顶、拱腰和拱脚布置不同气体的监测点,对隧道内的有害气体成分与浓度进行监测,并根据监测结果及时提出针对性的预防措施。Hongdoushan tunnel of Dalin railway passes through the non coal strata, and it is the first time in the construction of railway tunnel in China. In the process of construction, there are many kinds of mixed harmful gases escaping from Hongdoushan tunnel. The gas composition is complex, random, highly hazardous and unpredictable. In order to grasp the change of harmful gas composition and concentration in the tunnel in real time and reduce the harm of harmful gas to human body in the construction process, through the research on the characteristics of nine kinds of harmful gases(oxygen, gas, carbon monoxide, carbon dioxide, hydrogen sulfide, sulfur dioxide, ammonia, nitrogen dioxide and hydrogen gas), two monitoring methods, automatic monitoring and manual monitoring, are adopted in the arch of the tunnel different gas monitoring points are arranged at the top, arch waist and arch foot to monitor the harmful gas composition and concentration in the tunnel, and corresponding preventive measures are put forward in time according to the monitoring results.

关 键 词：非煤系地层 隧道 有害气体 实时监测技术 

分 类 号：U456.3[建筑科学—桥梁与隧道工程]