Qinghai-Tibet Railway goes through the hinterland of Qinghai-Tibet Plateau. This plateau is famous for its oxygen deficiency, arctic alpine climate, dry and windy weather, strong ultra-violet radiation. It’s also the natural source of plague, and in many regions, drinkable water is scarce. Severe oxygen deficiency will result in such acute diseases as plateau cerebral edema and plateau lung edema, which will seriously affect the patients’ health and working ability. From Nanshankou to Lhasa, every section of the Qinghai-Tibet Railway has an altitude above 3,000 m, out of which 960 km runs on areas higher than 4,000 m. Medical experiments have proven, that under 3,000 m above the sea level,(while the partial pressure of oxygen in pulmonary alveolus air changes significantly,) the oxygen content of the arterial blood will not change greatly (the human body has a flat haemoglobin oxygen ion curve). While the altitude is higher than 3,000 m, with even very little change of, the oxygen content of arterial blood will drop significantly, as a result, the human body will demonstrate a series of oxygen deficiency symptoms. In the construction of Qinghai-Tibet Railway, how to ensure the construction team can be mobilized to the site, they can stay on the site and successfully complete the assigned works is an important issue that we must try our best to address.
展开▼
