论文部分内容阅读
矿井火灾给矿工的生命与社会财富都会造成很大损失,所以,各国都在积极进行矿井火灾早期自动报警设备的研制工作,以求在尚未酿成火灾时的早期自动进行报警,使得人们易于灭火。西德Schlagel & Eisen矿从1979年3月起试用了一种这类设备。它有5个井下测点和2个进风测点的插件。它的工作原理如下:当矿井起火时会使矿井空气中的CO(一氧化碳)浓度显著增加,所以就用CO浓度的升高作为发生火灾的标志。当CO浓度超过一定的阈限值时,就发出报警信号。不过,除火灾外,其它如井内爆破作业的炮烟、井内柴油机的废气以及在换气过程中进风流可能由井外夹带进来的CO烟也都会使CO浓度上升。所以要加以补偿。办法是在进风并设一个测点,将在井下测得的CO浓度减去进风井测得的浓度(CO初浓度),这样就可得到井下实际CO浓度。
Mine fire to the lives of miners and social wealth will cause great losses, so all countries are actively carrying out mine fire early automatic alarm equipment development, in order not to lead to fire early in the automatic alarm, making people easy to put out the fire . One such facility was piloted in March 1979 at Schlagel & Eisen in West Germany. It has 5 downhole measuring points and 2 inlet points to the wind. Its working principle is as follows: When the mine fire will make the mine air CO (carbon monoxide) concentration significantly increased, so the CO concentration increased as a sign of fire. When the CO concentration exceeds a certain threshold, an alarm signal is generated. However, in addition to fires, other concentrations of CO, such as in-well blasting, exhaust gas in wells, and intake fumes that may be entrained in the well during the ventilation process, also increase CO concentrations. So to be compensated. The approach is to enter the wind and set a measuring point, will be measured downhole CO concentration minus the measured concentration of the inlet (CO initial concentration), so that you can get the actual CO concentration underground.