摘要
为探究高海拔低氧环境对施工机械动力性能的影响,文章以运输类施工机械为研究对象,通过测算牵引力比功率研究海拔变化对施工机械的动力性能影响。同时,以牵引力比功率作为运输类施工机械的工作效率量化指标,建立海拔-施工机械工作效率降低系数回归模型以及海拔-施工机械台班消耗调整系数模型。研究结果表明:海拔越高,机械动力性能越差,海拔4200 m处较2800 m处牵引力比功率下降23%,机械工作效率下降23%;海拔越高,机械台班消耗越大,海拔4200 m处较2800 m处台班消耗量增大24%。
In order to explore the influence of high-altitude and low-oxygen environment on the power perfor⁃mances of construction machinery,the construction transportation machinery is taken as the studied object,and the influence of altitude change on the power performances of construction machinery is studied by measuring the trac⁃tion specific power.At the same time,traction specific power is used as a quantitative index of working efficiency of construction transportation machinery,and the regression model of altitude-working efficiency reduction coefficient of construction machinery and the regression model of altitude-consumption adjustment coefficient of construction machinery shift are established.The study results show that the higher the altitude is,the worse the power perfor⁃mance of machinery is.The traction specific power of construction machinery at 4200 masl(above sea level)is 23%lower than that at 2800 masl,and the working efficiency of machinery at 4200 masl is 23%lower than that at 2800 masl.The higher the altitude is,the greater the consumption of machinery shift is,and the consumption of machinery shift at 4200 masl is 24%higher than that at 2800 masl.
作者
王帅帅
谌桂舟
郭春
白永厚
WANG Shuaishuai;CHEN Guizhou;GUO Chun;BAI Yonghou(CCCC Second Highway Engineering Co.,Ltd.,Xi′an 710065;Key Laboratory of Transportation Tunnel Engineering,Southwest Jiaotong University,Chengdu 610031;The Fourth Engineering Co.,Ltd.of CCCC Second Highway Engineering,Luoyang 471013)
出处
《现代隧道技术》
EI
CSCD
北大核心
2020年第5期23-29,共7页
Modern Tunnelling Technology
基金
“十三五”国家重点研发计划(2019YFC0605104)
四川省教育科研资助金项目(2018495)
成都哲学社会科学规划项目(2019CS107)
成都市科技项目(2019-YFYF-00121-SN).
关键词
高海拔隧道
机械动力性能
牵引力比功率
机械工作效率
机械台班消耗
High-altitude tunnel
Power performance of machinery
Traction specific power
Working efficiency of machinery
Consumption of machinery shift
