|
|
|
| Study on gas prediction system of spontaneous combustion index of 8 coal seam in Linxi Mine |
| Wu Peiyi |
| Tangshan Kailuan Linxi Mining Co., Ltd., Tangshan 063100, China |
|
|
|
|
Abstract In order to study the spontaneous combustion tendency of 8 coal seam in Linxi Coal Mine, the characteristic temperature of coal body was measured by thermogravimetric experiment, and the composition and concentration of gas generated by coal oxidation were analyzed by programmed temperature rise. The variation law of single gas and compound gas was determined, the index gas of coal seam spontaneous combustion was optimized, and the prediction index system was constructed. The temperature of slow oxidation stage in the spontaneous combustion period of No.8 coal seam in Linxi Coal Mine is < 240 ℃, the accelerated oxidation stage is 240 ~ 300 ℃, and the severe oxidation stage is > 300 ℃. CO and C2H4 gas are used as the qualitative prediction index of spontaneous combustion in 8 coal seam of Linxi Mine, CO2/CO and ICO are used as the quantitative determination index, and C2H6/CH4 is the auxiliary quantitative determination index. The research results provide a theoretical basis for the prediction and prevention of coal seam spontaneous combustion.
|
|
|
|
|
|
| [ 1 ] 吴玉国，邬剑明，王俊峰. 煤层自燃指标气体的试验研究[ J ]. 中国煤炭，2007（ 4 ）：40 - 42.
[ 2 ] 王福生，刘颖健，高 东，等. 煤自燃过程中自由基与指标气体释放规律[ J ]. 煤炭科学技术，2016，44（ S1 ）：72 - 74.
[ 3 ] 沈云鸽，王德明，朱云飞. 不同自燃倾向性煤的指标气体产生规律实验研究[ J ]. 中国安全生产科学技术，2018，14（ 4 ）：69 - 74.
[ 4 ] 蒋曙光，张卫清，王兰云，等. 煤自燃高温段指标气体的B型关联度分析[ J ]. 采矿与安全工程学报，2009，26（ 3 ）：377 - 380.
[ 5 ] 徐长富，傅 贵，郑忠亚，等. 纳林河二号井3-1煤层指标气体优选试验[ J ]. 安全与环境学报，2014，14（ 3 ）：118 - 122.
[ 6 ] 骆大勇，刘 振，许 疃. 矿煤炭自燃指标气体优选与应用[ J ]. 矿业安全与环保，2021，48（ 5 ）：69 - 74.
[ 7 ] 安靖宇，张 健，季德阁，等. 基于分段拟合的煤自燃指标气体优选研究[ J ]. 中国安全生产科学技术，2021，17（ 10 ）：25 - 31.
[ 8 ] 文 虎，郭曦蔓，张 铎，等. 建北煤矿高瓦斯煤层自燃早期预报指标优选研究[ J ]. 矿业安全与环保，2022，49（ 3 ）：1 - 8.
[ 9 ] 梁仓船，李 颖，桑明明. 煤自燃预测定量指标的数学统计分析[ J ]. 煤炭与化工，2022，45（ 6 ）：106 - 109.
[ 10 ] 孙 萌，王福生，王建涛，等. 惰化煤中过渡金属离子抑制煤自燃特性试验研究[ J ]. 矿业研究与开发，2022，42（ 2 ）：124 - 128. |
|
|
|
