某矿重大煤与瓦斯突出事故原因分析  

Cause Analysis for Major Coal and Gas Outburst Accident in a Coal Mine

作　　者：任建伟[1,2,3] 谢雄刚[1,2,3] 左冉振 

机构地区：[1]贵州大学矿业学院,贵州贵阳550025 [2]贵州大学复杂地质矿山开采安全技术工程中心,贵州贵阳550025 [3]贵州大学贵州省优势矿产资源高效利用实验室,贵州贵阳550025

出　　处：《煤矿安全》2014年第11期147-150,共4页Safety in Coal Mines

基　　金：贵州大学研究生创新基金资助项目[研理工2014072];贵州省科技厅工业攻关项目(黔科合GY[2012]3054);贵州省教育厅自然科学重点资助项目(黔教科(2011)034号)

摘　　要：通过对贵州省普定县某煤矿2012年"5.16"重大煤与瓦斯突出事故现场分析,结合事故现场特征、突出机理和突出能量动态平衡理论,分析得出:事故的主观因素为掘进M2煤层时未采取防突措施、采用非正规采煤方法导致应力集中、安全防护措施不到位和违规放炮诱发煤与瓦斯突出;事故段M2煤层煤层松软变厚、地应力增加及高瓦斯压力梯度是事故发生的客观因素;2151运输巷掘进工作面事故前突出动力能增大,突出消耗能减小,突出动力能大于突出消耗能,导致两者在动态酝酿过程中失去平衡而引发突出;突出地点短时间内涌出了大量瓦斯及抛出的煤炭堵塞了回风下山,而导致瓦斯逆流是造成人员伤亡的主要原因。Based on the accident scene of the major coal and gas outburst in Puding County of Guizhou province in May 16th 2012, combined with the accident characteristics, outburst mechanism and outburst energy dynamic balance theory, the analysis shows that the subjective factors of the major outburst accident are failed to take measures against outburst when M2 coal seam was drived. Informal tunnel mining method caused the stress concentration, and the tunneling face blasting induced the coal and gas outburst without taking safety protection measures. The accident point of M2 coal seam becomes thickened soft, ground stress increases and high gas pressure gradient is the objective factors of the accident. Before the accident, 2151 tunneling face outburst power increases, consumption power goes down, the outburst power is more than the consume power, leading to outburst for the loss of balance in the dynamic process. The main reason causing casualties is countercurrent gas, which resuhes in a large number of gas emission in a short time and coal thrown down and blocked the ventilation down laneway in outburst location.

关 键 词：煤与瓦斯突出 事故原因 突出能量动态平衡 诱发 

分 类 号：TD713[矿业工程—矿井通风与安全]