摘要
以新旺煤矿为工程背景,采用理论分析及数值模拟的方法分析采空区自燃“三带”范围。结果显示,工作面进风侧滞后工作面0~22.6 m为散热带,滞后工作面22.6~53.4 m为氧化带,滞后工作面53.4 m范围以外为窒息带;回风侧滞后工作面0~4.8 m为散热带,滞后工作面4.8~39.7m为氧化带,滞后工作面39.7 m范围以外为窒息带。通过对3116工作面现场实测数据分析,采空区自燃“三带”范围与数值模拟结果基本吻合,验证了数值模拟分析的准确性。
Based on the engineering background of Xinwang Coal Mine,the range of spontaneous combustion'three zones'in goaf is analyzed by theoretical analysis and numerical simulation.The results show that the air inlet side of the working face lags behind the working face 0~22.6 m as the heat dissipation zone,22.6~53.4 m as the oxidation zone,and 53.4 m away from the working face as the suffocation zone.The lag working face 0~4.8 m on the return air side is the heat dissipation zone,the lag working face 4.8~39.7 m is the oxidation zone,and the lag working face 39.7 m is the asphyxiation zone.Through the analysis of the field measured data of 3116 working face,the range of'three zones'of spontaneous combustion in goaf is basically consistent with the numerical simulation results,which verifies the accuracy of the numerical simulation analysis.
作者
左志宏
Zuo Zhihong(Shanxi Coal Transportation and Marketing Group,Datong 037001,China)
出处
《煤炭与化工》
2025年第8期114-117,121,共5页
Coal and Chemical Industry
关键词
采空区
自燃“三带”
气体分布
mined-out area
spontaneous combustion'three zones'
gas distribution
