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Physiological indicators and labor intensity of tunnel construction workers at ultra-high altitude
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Shulei ZHAO, Bing SUN3, Wengan CHEN3, Yinfeng XU3, Junfeng WANG3, Chun GUO1, 2
China Safety Science Journal | 2024, 34(4) : 239 - 246
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China Safety Science Journal | 2024, 34(4): 239-246
• Occupational health •
Physiological indicators and labor intensity of tunnel construction workers at ultra-high altitude
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Shulei ZHAO, Bing SUN3, Wengan CHEN3, Yinfeng XU3, Junfeng WANG3, Chun GUO1, 2
Affiliations
  • 1 School of Civil Engineering，Southwest Jiaotong University，Chengdu Sichuan 610031，China
  • 2 Key Laboratory of Transportation Tunnel Engineering，Ministry of Education，Southwest Jiaotong University，Chengdu Sichuan 610031，China
  • 3 No.3 Construction Company of China Railway No.10 Engineering Group，Hefei Anhui 230031，China
Published: 2024-04-28 doi: 10.16265/j.cnki.issn1003-3033.2024.04.1748
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To assess the labor intensity of construction personnel in ultra-high-altitude tunnels，this study employed theoretical analysis to define evaluation indicators and used wearable devices to monitor physiological changes during various construction phases in a specific ultra-high-altitude tunnel. Subsequently，labor intensity and efficiency of different tasks were calculated. Results reveal that the physiological indicators of different tasks are significantly different. Specifically，cardiovascular loads of the workers installing secondary lining steel bars exceed the hygienic limits，and peripheral oxygen saturation (SpO2) levels of the mechanical operators is lower than the standard values. Labor intensity is classified as Grade V for installing secondary lining steel bars，Grade III for bottom plate construction and arch steel bar binding，and Grade II for installing secondary lining waterproof cloth and for mechanical operations. At an altitude of 4 700 meters，the labor efficiency ranges only from 76% to 88% compared to the plain areas. To match the workload in the plain areas，the labor input must be increased by approximately 13.63% to 31.58% depending on the process.

ultra-high-altitude tunnel  /  construction workers  /  physiological indicators  /  labor intensity  /  labor efficiency
Shulei ZHAO, Bing SUN, Wengan CHEN, Yinfeng XU, Junfeng WANG, Chun GUO. Physiological indicators and labor intensity of tunnel construction workers at ultra-high altitude[J]. China Safety Science Journal, 2024 , 34 (4) : 239 -246 . DOI: 10.16265/j.cnki.issn1003-3033.2024.04.1748
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2024.04.1748
  • Receive Date：2023-10-15
  • Online Date：2025-07-09
  • Published：2024-04-28
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  • Received：2023-10-15
  • Revised：2024-01-17
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Affiliations
    1 School of Civil Engineering，Southwest Jiaotong University，Chengdu Sichuan 610031，China
    2 Key Laboratory of Transportation Tunnel Engineering，Ministry of Education，Southwest Jiaotong University，Chengdu Sichuan 610031，China
    3 No.3 Construction Company of China Railway No.10 Engineering Group，Hefei Anhui 230031，China
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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