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为研究青藏列车低氧暴露量及其限值,对青藏列车车内环境氧含量和乘务人员生理指标进行测试,研究列车低氧暴露定量评估方法,分析车内低氧暴露量与高原生理反应的剂量反应关系。结果表明,青藏铁路列车运行期间,车内环境氧分压为16.2~12.4 k Pa,一个往返乘务班次列车乘务人员低氧暴露当量为196.6。提出在急性高原反应低氧暴露限值为23/天,血氧饱和度限值为91%情况下,急性高原反应发生率可控制在10%以下;在低氧暴露当量小于1 000/月情况下,持续2年,绝大多数人不会发生高原红细胞增多症和高原心脏病。
In order to study the hypoxia exposure of Qinghai-Tibet trains and its limits, this paper tests the ambient oxygen content and the crew physiological indexes in Qinghai-Tibet train, studies the quantitative assessment method of aerobic exposure to train, analyzes the hypoxia exposure in the train and the physiology reaction Dose response relationship. The results show that during the train operation of Qinghai-Tibet Railway, the oxygen partial pressure in the vehicle environment is 16.2-12.4 kPa, and the hypoxia exposure equivalent of train crew on a round trip train is 196.6. It is suggested that the incidence of acute altitude sickness can be controlled under 10% when the exposure limit of hypoxic exposure to acute altitude sickness is 23 / day and the limit of oxygen saturation is 91%. When the hypoxic exposure equivalent is less than 1000 / month , For 2 years, the vast majority of people will not occur high altitude polycythemia and altitude heart disease.