摘要
为明确上覆煤层氧化作用对近距离煤层开采过程中采空区CO涌出的影响机制,以麻地梁煤矿5#煤层5011工作面为研究对象,开展了5#煤层及其上覆4#煤层的程序升温氧化实验,结合采空区气体运移特征分析,建立了CO涌出分源预测模型,对采空区CO涌出来源开展定量解析。研究结果表明,4#煤层与5#煤层CO生成量的分源比例为9∶11。该研究证实近距离煤层开采中,上覆煤层氧化是导致本煤层采空区CO异常的重要诱因。该研究结论为类似条件矿井的煤自燃防治提供了理论依据。
To clarify the influence mechanism of overlying coal seam oxidation on CO emission from goaf during close-distance coal seam mining,taking the 5011 working face of 5#coal seam in Madiliang Coal Mine as the research object,programmed temperature-rising oxidation experiments of 5#coal seam and its overlying 4#coal seam were carried out.Combined with the analysis of gas migration characteristics in goaf,a source-separated prediction model for CO emission was established,and a quantitative analysis of CO emission sources in goaf was conducted.The research results show that the source-separated ratio of CO generation between 4#coal seam and 5#coal seam is 9:11.This study confirms that in close-distance coal seam mining,the oxidation of overlying coal seam is an important inducement for abnormal CO in the goaf of the current coal seam,which provides a theoretical basis for coal spontaneous combustion prevention and control in mines with similar conditions.
作者
阚磊
王国栋
Kan Lei;Wang Guodong(Inner Mongolia Intelligent Coal Co.,Ltd.,Ordos,Inner Mongolia 017000)
出处
《现代工程科技》
2025年第13期93-96,共4页
Modern Engineering Technology
关键词
上覆煤层
分源比例
煤氧化
裂隙带
overlying coal seam
source-separated ratio
coal oxidation
fractured zone
