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1995年3月,云南省富源县村办的旧屋基煤矿发生一起瓦斯爆炸事故,32人死亡,12人受伤。 根据事故调查和处理的有关规定,调查组通过调查和取证,并经专家技术鉴定,现已查明这次事故的直接原因。 (1)该煤矿现开采范围为四条断层带包围的高沼气区域,大面积采空区和盲巷未封闭,沼气大量涌入作业区。且高沼气矿井采用下行风、大串联风,穿巷采煤,通风瓦斯管理混乱,瓦斯积聚超限。(2)井下瓦
In March 1995, a gas explosion took place in the old house-based coal mine in Fuyuan County, Yunnan Province, killing 32 people and injuring 12 others. According to the accident investigation and handling of the relevant provisions of the investigation team through the investigation and evidence collection, and expert technical appraisal, has now identified the immediate cause of the accident. (1) The existing high-methane area surrounded by four fault zones in the coal mine is open. Large-area goafs and blind lanes are not closed, and a large amount of biogas influx into the work area. In addition, the high-methane gas mines use the downside wind, large series winds and coal mining in the through roadways, and the ventilation gas management is in chaos and the gas accumulation exceeds the limit. (2) underground tile