防冲卸压爆破与密闭墙气体异常耦合分析研究

Study on Coupling Analysis of Gas Anomaly Between Anti Impact and Pressure Relief Blasting and Closed Wall

通过研究星村煤矿3303轨道顺槽密闭墙束管分析出现高浓度一氧化碳及乙烯事件,对冲击地压矿井煤体卸压爆破造成的密闭墙内气体异常进行研究分析,确定导致密闭墙内出现高浓度一氧化碳及乙烯等自然发火标志性气体的原因,采取继续封堵漏风,加强采样分析措施后有效地消除了密闭墙内气体异常事件。

Based on the analysis of the high concentration of carbon monoxide and ethylene in the sealed wall of 3303 track gateway in Xingcun Coal Mine,the abnormal gas in the closed wall caused by the coal body pressure relief blasting in the rock burst mine is studied and analyzed.The causes of the high concentration of carbon monoxide and ethylene and other natural combustion symbolic gases in the closed wall are determined.The abnormal gas events in the closed wall were effectively eliminated after the measures of continuous sealing air leakage and strengthening sampling analysis.