高海拔隧道施工劳动强度与供氧浓度关系研究  

Study on Relationship between Labor Intensity and Oxygen Concentration in High-altitude Tunnel Construction

作　　者：谌桂舟 陈政 琚国全[3] 汪辉武 郭春[1,2] CHEN Guizhou;CHEN Zheng;JU Guoquan;WANG Huiwu;GUO Chun(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031;Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University,Chengdu 610031;China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031)

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]西南交通大学交通隧道工程教育部重点实验室,成都610031 [3]中铁二院工程集团有限责任公司,成都610031

出　　处：《现代隧道技术》2022年第1期118-123,共6页Modern Tunnelling Technology

基　　金：“十三五”国家重点研发计划(2019YFC0605104);教育部产学合作协同育人项目(201801221005);四川省教育科研资助金项目(2020597);成都哲学社会科学规划项目(2019CS107);成都市科技项目(2019-YFYF-00121-SN,2020-RK00-00025-ZF)。

摘　　要：为研究高海拔隧道施工人员供氧浓度问题,文章通过骑行试验得到了不同人员在海拔高度为590~4000 m,氧气浓度为20.9%~29%,骑行功率为0、50 W、75 W、100 W工况下的生理指标,得到测试对象的劳动强度指数,分析研究得到以下结论:(1)在同一海拔高度、相同劳动强度工况下,提升环境氧气浓度,可以显著降低人员劳动强度指数;(2)劳动强度指数的减少与氧气浓度的增加并不是线性关系,当环境氧气浓度超过25%时,劳动强度指数的降低程度有限;(3)拟合得到了劳动负荷为100 W且氧气浓度为20.9%~25%时施工人员的劳动强度指数与海拔高度及供氧浓度的关系式。In order to study the oxygen concentration issues in the case of workers working in high-altitude tunnels,riding tests were carried out to get the physiological indexes and the labor intensity indexes of test objects at the altitude of 590~4 000 m and oxygen concentration of 20.9%~29% under the riding loads of 0, 50 W, 75 W and 100 W.The analysis and research conclusions are as follows:(1) under the working conditions of the same altitude and the same labor intensity, increasing the ambient oxygen concentration can significantly reduce the labor intensity index;(2) there is no linear relationship between the decrease of labor intensity index and the increase of oxygen concentration. When the ambient oxygen concentration exceeds 25%, the decrease of labor intensity index is limited;(3) the relationship between the labor intensity index of construction workers and the altitude and oxygen concentration is fitted and obtained under the labor load of 100 W and the oxygen concentration of 20.9%~25%.

关 键 词：高海拔隧道 供氧浓度 试验研究 劳动强度指数 

分 类 号：U455.1[建筑科学—桥梁与隧道工程]