低瓦斯矿井的瓦斯异常带是发生煤矿事故的隐患。通过井田地质构造、煤层厚度及其结构、煤体结构、水文地质条件等瓦斯异常带地质特征分析,结果表明：瓦斯异常带是地质异常带。对潘西矿后五块段瓦斯异常带进行了分析,发现F7-1下盘断块的煤层,除煤层瓦斯保存条件较好外,其上部受阻于F7-1断层,下部又有深部本煤层瓦斯补给,异常涌出的次数也最多。%The gas anomaly zone of low gas mine is a place where latent mine hazard may take place. The au- thors analyzed the geologic characteristics of gas anomaly zone, such as, coal field geological tectonics, seam thickness and its structures, structure of coal solid, hydro- geological conditions, etc. The results indicated that gas anomaly zone was a geological anomaly zone. The authors analyzed the gas anomaly of five blocks be- hind Panxi Mine. It was found except that CBM was well - reserved in coal seam because of blockage of F7- 1 fault at the top, and gas was also recharged by the seam at the depth where abnormal gas emission occurred mostly.
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