山东煤炭科技2025，Vol.43Issue(5)：71-75,96,6.DOI:10.3969/j.issn.1005-2801.2025.05.014
姚桥煤矿7#煤层氧化升温特征研究
Research on Oxidation and Temperature Rising Characteristics of the 7#Coal Seam in Yaoqiao Coal Mine
祝琳 1吴奎斌 1刘永1
作者信息
- 1. 上海大屯能源股份有限公司江苏沛县大屯煤电公司,江苏 徐州 221600
- 折叠
摘要
Abstract
The 7#main mining coal seam in Yaoqiao Coal Mine has a relatively high risk of spontaneous combustion.In order to improve the targeted prevention and control of coal spontaneous combustion,through a coal spontaneous combustion characteristics tester,the concentration of various indicator gases is measured during the temperature rising process of coal samples,and the spontaneous combustion law of residual coal at different positions of the working face is explored during the process of coal seam mining.The experimental results show that CO gas has already appeared at 70℃,and the coal bodies have started to slowly oxidize.When the temperature reaches 125℃or above,CO significantly increases,indicating that the coal oxidation process reaches the accelerated oxidation stage;C2H4 begins to appear at 100℃,and its production quantity increases overall with the rise of coal temperature.C2H2 does not appear within the experimental temperature range of 200℃.Once C2H2 is present,it indicates that coal has undergone a violent chemical reaction.A coal spontaneous combustion classification early warning system is constructed through experiments combined with on-site experience,using CO as an early indicator gas for coal seam ignition,and C2H4 and C2H2 as auxiliary indicator gases to judge coal ignition situations.关键词
煤自燃/工作面位置/氧化升温/指标气体Key words
coal spontaneous combustion/working face position/oxidation and temperature rising/indicator gas分类
矿业与冶金引用本文复制引用
祝琳,吴奎斌,刘永..姚桥煤矿7#煤层氧化升温特征研究[J].山东煤炭科技,2025,43(5):71-75,96,6.
