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一、概况 1、泉沟煤矿地处山东省新汶矿区新泰县境内。井田走向4km,倾斜宽2.4km。为石炭、二叠系煤层,共有可采煤层7层,其中2、4、6层为上组,11、13、15、16层为下组,均为缓倾斜薄及中厚煤层。该井田所有可采煤层均属有煤尘爆炸危险,煤尘爆炸性指数35％～45％,其中13层煤有自燃发火倾向。历年瓦斯鉴定结果均为低级沼气和低级二氧化碳矿井。
I. Overview 1, Quanyou coal mine is located in Xintai County, Shandong Province, the territory of mining. Minefield to 4km, width of 2.4km. For the Carboniferous and Permian coal seams, there are totally 7 layers of recoverable coal seams, of which 2, 4 and 6 are the upper group, while the 11th, 13th and 15th and 16th floors are the lower group, all of which are gently inclined thin and medium thick seams. All mineable coal seams in this field are dangerous for coal dust explosion. The explosive index of coal dust is 35% -45%. Among them, the 13th layer of coal has spontaneous combustion tendency. The gas identification results over the years are low-grade biogas and low-grade carbon dioxide mine.