CAJ | 학술논문

通过对含丝炭层与不含丝炭层典型煤样的热重与热解实验，以活化能为煤自燃倾向性指标，研究古山矿065-2煤层自然发火特性；测定实验煤样在不同热解温度下CO、CH4、C2 H4的浓度及浓度随温度的变化规律，结果表明：典型煤层氧化分解属一级化学反应，丝炭煤着火温度低、自然发火倾向性强，须重点监测和防治。在实验研究的基础上，结合指标气体选择的一般原则，建立以CO为主、C2 H4为辅的自然发火指标气体体系，提高煤炭早期自燃预测、预报的准确度，以预防矿井发生火灾。
통과대함사탄층여불함사탄층전형매양적열중여열해실험，이활화능위매자연경향성지표，연구고산광065-2매층자연발화특성；측정실험매양재불동열해온도하CO、CH4、C2 H4적농도급농도수온도적변화규률，결과표명：전형매층양화분해속일급화학반응，사탄매착화온도저、자연발화경향성강，수중점감측화방치。재실험연구적기출상，결합지표기체선택적일반원칙，건립이CO위주、C2 H4위보적자연발화지표기체체계，제고매탄조기자연예측、예보적준학도，이예방광정발생화재。
Through thermo-gravimetric and paralytic experiments of typical coal samples containing fusain layer and not containing fusain layer,study was made on the spontaneous combustion characteristics of 062-2 coal seam by taking the activation energy as the coal spontaneous combustion tendency index,and measurements were carried out on the concentration of CO,CH4 and C2 H4 in coal samples at different paralytic temperature and the variation of the concentration of these gases with temperature. The results show that that oxidation decomposition of typical coal samples belongs to the first-order chemical reaction,and the coal containing fusain has low ignition temperature and strong spontaneous combustion tendency, so it needs to be monitored and controlled emphatically;On the basis of the experimental study and combined with the general principle of the index gas selection, a spontaneous combustion index gas system with CO as the main index gas and C2 H4 as the auxiliary index gas was established, which can improve the accuracy of coal spontaneous combustion prediction and prevent the occurrence of mine fires.