高海拔隧道施工供氧技术方案设计  

Design of oxygen supply technology for highaltitude tunnel construction

作　　者：李宁 雍思东 LI Ning;YONG Sidong(Sichuan Gangtong Medical Equipment Group Co.,Ltd.,Chengdu 641400,China)

机构地区：[1]四川港通医疗设备集团股份有限公司,四川成都641400

出　　处：《医用气体工程》2024年第3期41-45,共5页Medical Gases Engineering

摘　　要：目的:解决高海拔隧道施工中严峻的缺氧问题,确保人员安全与施工效率。方法:通过分析液氧、气瓶、变压吸附(PSA)等多种供氧技术,发现局部富氧空气与PSA制氧为较优方案。结果:研究提出了一套综合供氧策略:针对开挖面采用局部弥散供氧结合长管呼吸面罩;喷浆区推荐个人携氧设备;二衬作业与生活区实施移动吸氧车与弥散供氧。以海拔4000m隧道模型为例,设计采用2套PSA制氧设备,有效提升氧气浓度至平原65%水平,相当于施工海拔降至3600m。结论:综合运用PSA制氧与针对性供氧方法能有效应对高海拔施工挑战,为类似工程提供科学指导。Objective:To tackle the severe hypoxia in high-altitude tunnel construction,ensuring personnel safety and construction efficiency.Methods:By analyzing various oxygen supply technologies,including liquid oxygen,cylinder-based systems,and pressure swing adsorption(PSA),it isfound that localized oxygen-enriched air and PSA oxygen production were superior options.Results:A set of comprehensive oxygen supply strategy was put forth:combining local dispersion oxygen supply with long-tube respirators for excavation sites;advocating personal oxygen carriers for shotcrete operations;and employing mobile oxygen vehicles and dispersion oxygen supply in secondary lining works and living areas.Taking a 4000 m altitude tunnel model as an example,two sets of PSA oxygen production equipment were designed to effectively elevate oxygen concentrations to 65%of sea-level standards,which was equivalent to the constructionelevation dropping to 3600 m.Conclusion:The comprehensive application of PSA oxygen production and tailored oxygen supply method can effectively deal with the challenges of high-altitude construction and provide scientific guidance for similar projects.

关 键 词：高海拔 缺氧 富氧空气 供氧方式 人员安全 

分 类 号：TQ116[化学工程—无机化工]