煤矿采空区自然发火指标气体的选择研究

Study on selection of spontaneous combustion index gas in coal mine goaf

采用CSC-B2煤低温自燃实验台测试了井下混合粒度煤样,研究煤样解析出的各指标性气体(CO、CO_2、C_2H_6、C_2H_4、C_2H_2、C_2H_4/C_2H_6)与温度的变化关系,即得到不同温度条件下的自燃指标气体,确定煤层自燃早期预测预报指标气体。

The coal samples with mixed particle size in the underground were tested by using CSC-B2 low temperature spontaneous combustion test bed of coal,the relationship of various indicative gases extracted from coal samples(including CO、CO2、C2H6、C2H4、C2H2、C2H4/C2H6)and the change of temperature were analyzed,the spontaneous combustion index gas under different temperature conditions were obtained,the early prediction of spontaneous combustion of coal seam gas index were also determined.