山东煤炭科技2024，Vol.42Issue(9)：87-92,6.DOI:10.3969/j.issn.1005-2801.2024.09.018
孔庄煤矿7436工作面煤自燃气体产生规律与分级预警研究
Research on the Gas Generation Law and Grading Early Warning of Coal Spontaneous Combustion in the 7436 Working Face of Kongzhuang Coal Mine
蔡春城 1张喜龙 1叶子清1
作者信息
- 1. 上海大屯能源江苏分公司孔庄煤矿,江苏 徐州 221600
- 折叠
摘要
Abstract
The accurate prediction of the degree of coal spontaneous combustion is the key to the prevention and control of coal seam spontaneous combustion.A relatively single early warning index and simple early warning method cannot accurately determine the stage of coal spontaneous combustion in goaf.In order to further improve the reliability of coal spontaneous combustion early warning,taking Kongzhuang Coal Mine as a research object,a programmed temperature coal spontaneous combustion experiment is conducted to explore the relationship between gas concentration variation law and temperature during the coal spontaneous combustion process in this mine.The initial concentrations of various characteristic gases during the coal oxidation and heating process are measured.According to the occurrence laws of CO,C2H6,C2H4,C2H2 and the variation laws in CO/O2,CO/CO2,C2H4/C2H6,five characteristic temperatures are determined,and the coal spontaneous combustion process is divided into six stages such as safe period,oxidation period,heating period,thermal decomposition period,fission period,and combustion period.A grading early warning index system for coal spontaneous combustion in the 7436 working face of Kongzhuang Coal Mine is proposed.The application of this grading early warning system successfully predicts the degree of coal spontaneous combustion in the goaf of the 7436 working face,and ensures the safe stoping of this working face by taking timely nitrogen injection and grouting measures.关键词
煤自燃/程序升温/预警指标Key words
coal spontaneous combustion/temperature programmed/early warning index分类
矿业与冶金引用本文复制引用
蔡春城,张喜龙,叶子清..孔庄煤矿7436工作面煤自燃气体产生规律与分级预警研究[J].山东煤炭科技,2024,42(9):87-92,6.
