无安全监控系统的煤矿特别重大瓦斯爆炸事故案例分析

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40m掘采面;40m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。

Case Analysis of Gas Explosion Disaster of Coal Mine without Safety Monitoring System

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.