MINERS PHYSIOLOGICAL REACTION IN PLATEAU ENVIRONMENT AND THE RESEARCH OF SUPPLEMENTED OXYGEN STANDARD IN UNDERMINE

摘要

The purpose of this study was to investigate the appropriate supplemented oxygen standard in oxygen-deficient plateau undermine. During the research, Miners physiological indices were tested in three stages of acclimatisation and the hypoxia conditions of miners were analysed. By measuring four underground levels at all seasons, researchers analysed the oxygen content changes and influence-factors. Mathematical models of the oxygen compensation were also made. The results showed the following points: (i) after the acclimatisation stages, miners anti-hypoxia ability increased. Their arterial blood oxygen saturation index could reach to 90.42 +/- 3.43% and alveoli oxygen partial pressure could reached 82.5 hPa; (ii) seasons and altitudes had great influence on the ranges of oxygen content in different levels and other factors had less influence; (iii) the numeric ranges of supplemented oxygen at all seasons and in different levels were obtained. The research provided a new method of calculating the target values of supplemented oxygen to improve plateau undermine oxygen-supplying condition.