论文部分内容阅读
针对煤自燃预测预报时采用负压束管监测系统存在巷道气体容易漏入束管中,使所监测到的气体成分和浓度不能真实反映监测地点实际情况的问题,基于正压输送气体方式在束管漏气的情况下不失真的特点,提出以正压束管监测系统作为监测采空区发火情况的方式,研制并测试了正压束管监测系统。利用不同长度的束管在地面进行正压输送气体试验,采用正压输送气体保证了气体浓度不变,正压束管所测得的数据能够真实反映出煤自然发火状态。
Aiming at the problem that the gas in the roadway is easy to leak into the beam tube when using the negative pressure beam tube monitoring system to predict and predict coal spontaneous combustion so that the monitored gas composition and concentration can not truly reflect the actual situation of the monitoring site. Based on the positive pressure conveying gas method, Tube leakage is not distorted under the characteristics of the proposed pressure beam tube monitoring system as a way to monitor the gob fire, developed and tested the positive pressure tube monitoring system. Using different lengths of beam pipe to carry out positive pressure gas transmission test on the ground, the positive pressure gas is used to ensure the gas concentration is unchanged, and the data measured by the positive pressure beam tube can truly reflect the state of coal spontaneous combustion.