Analysis on Mine Main Fan Operating Points of High Elevation Areas

摘要：

The atmosphere pressure, temperature and air density decrease with the increase of the altitude. But the air quantity in the mines and the air quantity supplied by the fan remain constant in spite of the change of the altitude. As the altitude increase, the decrease of air density causes the pressure losses of the mine and the air pressure of the fan to fall down proportionally; and for the same reason the output power of the motor is reduced, too. Thus the selection procedure of the fan is simplified. It isnt necessary to carry out complicated altitude correction in the ventilation design. Both the fan and the motor can be selected with normal methods. The only difference is that the practical operating point of the fan is lower than the one which is expected according to the design. The air pressure of the operating point of the fan is the designed air pressure of the operating point multiplied by the altitude correct coefficient. The air quantities of both operating points of the fan are equal. The paper expounds in theory the mine ventilation in areas of high altitude. The theory has been proved by a lot of data from tests. The paper serves as a theoretical reference for the design of mine ventilation in area of high altitude and is of value to the work in practice.

关键词： fan operating point high altitude mine ventilation

作者: XIE Xianping XING Ji YU Yanping

作者单位: Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,Yun Dianxi Railroad Limited Liability Company,Kunming 650106,Yunnan,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1541-1545

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）