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中文摘要：
为了掌握邻近多采空区及本煤层采空区瓦斯抽采背景条件下的采空区漏风规律,以沙曲矿15202工作面为例对邻近多采空区的开采环境及其采空区瓦斯抽采所导致的漏风问题开展研究。通过对采空区的空间环境分布及瓦斯抽采对15202工作面漏风影响的分析,辅助工作面沿程漏风量实测,采空区及瓦斯抽采系统中气体体积分数的测定,结果表明：（1）多邻近采空区及在瓦斯抽采条件下,工作面采空区漏风严重;（2）采空区漏风风量中的55.7%经采空区漏入工作面,18.5%经上覆裂隙进入14202采空区抽采系统,14.7%进入邻近采空区,11.1%进入上隅角瓦斯抽采系统。此结果为采空区煤自燃防治提供了决策依据,并对类似工作面的漏风识别具有指导意义。
英文摘要：
In order to master the law of air leakage under the condition of multi-adjacent gob and gas extraction,according with the mining environment of multi-adjacent gob and gas extraction in Shaqu coal mine 15202work-face, the problem of air leakage was studied in gob. Though analyzing the influences of the adjacent goband gas extraction to the air leakage of 15202 work-face, and measuring of the air leakage amount of the workface,the gas volume fraction was determined in gob and gas extraction system. The research results show： （1 ）the working face gob air leakage is serious under the condition of multi-adjacent gob and gas extraction ; （ 2 ） inthe amount of air leakage about 55. 7% leakage in the goaf, 18. 5% leakage in the 14202 gob gas extractionsystem by the fissure of overlying strata, 14. 7% leakage in the adjacent goaf, 11. 1% leakage in the upper cornergas extraction system. The study provided the decision-making of preventing the coal spontaneous combustionin gob and guided significance to similar work-face of the air leakage recognition.
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Large eddy simulation of methane-air deflagration in an obstructed chamber using different combustio
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