CAJ | 학술논문

利用煤在低温氧化过程中会产生一些氧化气体产物，而这些气体产物中有些可以作为指标气体，了解这些气体的变化规律可以有效的预报采空区煤炭的自然发火．通过对龙东煤矿7128工作面煤层的新鲜煤样和氧化煤样进行低温氧化实验对比，测量新鲜煤样和氧化煤样在不同的温度下产生的气体产物，结果表明：氧化煤样是新鲜煤样的延续，新鲜煤样和氧化煤样在进行低温氧化都能够产生CO，CO2，CH4，C3 H8，C2 H4，C2 H6，C2 H2，C4 H10和iC4 H10等氧化气体，但所产生气体时的温度不一．7煤在达到70℃后可将CO作为煤炭自燃早期预报的指标气体，C2 H4可作为辅助指标气体．需要采用指标气体增长趋势与临界值共同预报采空区遗煤氧化情况．对煤的低温氧化实验规律研究可以用来对采空区内温度进行监测以防止煤炭自然发火．
이용매재저온양화과정중회산생일사양화기체산물，이저사기체산물중유사가이작위지표기체，료해저사기체적변화규률가이유효적예보채공구매탄적자연발화．통과대룡동매광7128공작면매층적신선매양화양화매양진행저온양화실험대비，측량신선매양화양화매양재불동적온도하산생적기체산물，결과표명：양화매양시신선매양적연속，신선매양화양화매양재진행저온양화도능구산생CO，CO2，CH4，C3 H8，C2 H4，C2 H6，C2 H2，C4 H10화iC4 H10등양화기체，단소산생기체시적온도불일．7매재체도70℃후가장CO작위매탄자연조기예보적지표기체，C2 H4가작위보조지표기체．수요채용지표기체증장추세여림계치공동예보채공구유매양화정황．대매적저온양화실험규률연구가이용래대채공구내온도진행감측이방지매탄자연발화．
In low temperature oxidation experiment,coal can produce oxidation gas products,some of which can be used as the indicator gases.An understanding of the change rule of these gases can effectively forecast the spontaneous combustion in mined-out area.Through the comparison between the fresh coal samples and the oxidized coal samples in the coal seam of 7128 workface in Longdong Coal Mine in low temperature oxidation experiment,the gaseous products of fresh coal samples and those of oxidized coal samples are measured in different temperatures.Results show that the oxidized coal samples are the continuation of fresh coal samples, and both of them can produce such oxidizing gases as CO,CO2 ,CH4 ,C3 H8 ,C2 H4 ,C2 H6 ,C2 H2 ,C4 H10 ,iC4 H10 , but the temperatures of the gases produced are different.In addition,when the temperature reaches 70 ℃,CO can be used as the indicator gases and C2 H4 as the auxiliary index gases to serve as the early prediction of coal spontaneous combustion in 7#coal seam.Both the increase trend and the critical value of indicator gases can be adopted to forecast the mined -out area of coal oxidation conditions.In order to prevent the coal from spontaneous combustion, the research on coal ’s low temperature oxidation experiment will monitor the temperature in mine-out areas.