我国的瓦斯抽放工作进展很快,今后瓦斯抽放矿井还将逐年增加。然而,瓦斯抽放管道的监视手段至今仍处于十分落后的状态。目前各矿对瓦斯抽放管道的沼气浓度监视手段不一,有些矿利用高浓度瓦斯检定器每小时对管道气体中沼气浓度进行一次测读记录,有些矿则每周进行一次取样分析。这些监视方法不仅增加了工作人员的劳动负担,更重要的是仍然不 China’s gas drainage work progressed very rapidly in the future gas drainage mines will also increase year by year. However, the monitoring of gas drainage pipelines is still in a very backward state. At present, each mine has different means of monitoring methane concentration in gas drainage pipelines. Some mines use high-concentration gas checker to measure the biogas concentration in pipeline gas once every hour, and some mine samples once a week. These monitoring methods not only increase the staff’s labor burden, but more importantly still do not