深部矿井工作面开采与灾害耦合关系分析

Analysis of Compound Relation Between Working Face Mining and Disaster in Deep

针对深部矿井工作面开采与灾害耦合关系,采用现场观测及数值模拟方法进行研究。研究结果表明:工作面微震事件数目、能量变化受工作面回采影响明显;工作面涌水量随工作面推进距离增加而增大;工作面硫化氢浓度随工作面后方采空区顶板垮落范围加大,整体呈现上升趋势;工作面回风流CO与回风隅角CO变化有一定关联性,在推采至200m时回风流CO达到最大值,为23×10-6,随后出现下降。该研究成果对类似条件矿井具有一定的参考价值。

To compound relation of working face mining and disasters in deep mine, and field observation and numerical simulationwas applied. The results showed that the number of micro seismic event of working face, energy variation were influenced by workingface mining obviously, water inrush amount increased with working face advanced distance increased, and hydrogen sulfide density in-creased with goaf roof collapse scope increased backward of working face, its total appeared upward trend, some relation between COof working face air flow and return airway corner CO, working face air flow CO reached its the maximal, its about 23×10-6, then thevalue decreased. It references for similar situation.