The paper analyzed "12-5" gas explosion disaster of Ruizhiyuan Coal Industry Co., Ltd. Which causes 105 deaths, and got conclusions: the explosion time was 2007-12-05T23:07; gas explosion source located at 40 m digging face of No. 9 coal seam; 40 m digging face was excavated without wind, which resulted in gas concentration accumulating to explosive concentration limits; the flame produced by shotfiring at 40 m digging face detonated gas and coal dust involved in the explosion; the No. 9 coal seam of the mine had no safety monitoring system and the gas gauge could not be found to cut off power and withdraw in time; the mine was confused in electromechanical management, for example, it did not use explosion-proof junction box to connect cables, extensively used non-explosion proof tricycles, and did not use integrated security devices to protect coal drill.%分析了死亡105人的瑞之源煤业有限公司“12·5”特别重大瓦斯爆炸事故,得出结论:爆炸时间为2007-12-05T23:07；瓦斯爆炸爆源位于9号煤层40 m掘采面；40 m掘采面无风作业,造成瓦斯积聚,达到爆炸浓度界限；40m掘采面放炮产生火焰,引爆瓦斯,煤尘参与爆炸；该矿9号煤层没有设置煤矿安全监控系统,不能及时发现瓦斯超限,停电撤人；该矿井下机电管理混乱,电缆不使用防爆接线盒连接,井下大量使用非防爆三轮车,煤电钻不使用综保装置.
展开▼
