微生物降解煤矿风流瓦斯实验研究

Experimental Study on Degradation of Gas in Coal Mine by Microorganism

针对煤矿井下采空区、采煤工作面、煤壁和顶板冒落坑等地方涌出的瓦斯汇入风流增加风流中瓦斯浓度而引起的局部瓦斯浓度超限,及甲烷氧化菌在煤体复杂多变的环境内易死亡或失去降解瓦斯能力的问题,结合矿井局部通风系统,主要指抽出式,研究了在煤矿瓦斯涌出源附近风流中来降解涌出的瓦斯,防止煤矿井下局部区域瓦斯浓度超限。设计并开发了模拟微生物降解煤矿风流瓦斯实验装置,分析研究了不同瓦斯浓度、不同菌液浓度及菌液与瓦斯不同接触面积,对菌液降解瓦斯能力的影响。

Aiming at the problem that,gas,come from coal mine mined-out area,work face,coal wall face, coal roof inbreak place and other places,flow into the air to increase the gas concentration in the air flow,causing gas concentration ultralimit in local area,and methane oxidative bacteria easy death or lose their degradation gas ability in the complex environment in coal,combined with the mine local area ventilation system,mainly refers to drawing type,the degradation of coal gas near gas emission source airflow is studied,to prevent the gas concentration uhralimit in local area.Designed and developed the experimental device for simulating microbial degradation of coal gas in airflow by microorganism,the effect of gas degradationability by bacteria liquid is analyzed with influences of different gas concentrations,different concentrations of bacteria,different contact area between bacteria liquid and gas.