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目的 :通过对高原地区不同海拔高度养路工劳动强度的调查分析 ,从而提出合理的劳动生产定额和劳动作业制度 ;方法 :选择本省不同海拔 (察尔汗、都兰、花石峡 )养路工人 ,分别进行工时利用率、肺通气量、能量代谢率和心率测定 ,按照国家标准 (GB -3 869-83 )的要求进行分级 ;结果 :在同一海拔高度 ,随着劳动强度增加 ,肺通气量、能量代谢率和心率均有增加 ,特别是在重体力劳动时肺通气量变化明显 ,察尔汗、都兰、花石峡 3个地区工作日总能量消耗超过国家规定的卫生学限度 ,劳动强度分别为Ⅱ级、Ⅱ级、Ⅲ级 ;结论 :人体在高原从事体力劳动时 ,随着海拔的升高 ,生理负荷加重 ,劳动能力下降
OBJECTIVE: Through the investigation and analysis of the labor intensity of road maintenance workers at different altitudes in the plateau area, a reasonable labor production quota and labor system are put forward. Methods: Select the road maintenance workers at different altitudes (Chaer Khan, Dulan, Huashixia) The hourly rate, pulmonary ventilation, energy metabolic rate and heart rate were measured and graded according to the national standard (GB -3 869-83). Results: With the increase of labor intensity, the lung ventilation, energy Metabolic rate and heart rate increased, especially in heavy manual labor changes in lung ventilation significantly, Chaer Khan, Dulan, Hua Shixia 3 days working day total energy consumption exceeds the national hygiene limits, labor intensity were Ⅱ, Ⅲ, Ⅲ. Conclusion: When the human body is engaged in manual labor in the plateau, with the elevation increasing, the physiological load aggravates and the working ability declines