目前,我国矿井瓦斯检测的主要手段是采用光学干涉瓦斯计。这种方法虽然准确、安全(在背景气体为正常大气组份时),但必须借助于人工的方法,且不能连续监视井下瓦斯浓度的变化。随着煤炭生产大幅度增长,尤其是在高浓度瓦斯矿井与综合机械化采煤工作面,更迫切需要一种能连续、自动检测瓦斯的仪器。近年来,我国许多单位不断 At present, the main method of mine gas detection in our country is using optical interference gas meter. Although this method is accurate and safe (when the background gas is a normal atmospheric component), it is necessary to resort to manual methods and can not continuously monitor changes in the gas concentration in the well. With the substantial increase of coal production, especially in high-concentration gas mines and mechanized coal mining face, there is an urgent need for an instrument that can continuously and automatically detect gas. In recent years, many units in our country have been continuously kept