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根据济三煤矿163下05工作面回采期间的微震事件、矿压显现程度以及钻屑法监测结果,指出了推进速度的变化可以在一定程度上影响工作面周围震动能量的释放过程,当工作面每日推进度为4.8～5.6 m,每日震动次数较少、震动能量都较低。通过分析工作面回采进尺与冲击矿压发生之间的关系,找出两者之间的相互作用,并对微震事件的发生与推进速度的关系进行研究,以期在达到预防冲击矿压灾害事故的基础上,确定工作面合理的推进速度,并提出以回采进尺为标准之一的冲击矿压防范标准,可在后期同水平同采区内的工作面生产阶段起到指导作用,为矿井的安全生产提供有力保障。
According to the microseismic events, the degree of occurrence of mine pressure and the monitoring results of cuttings method during the mining of No.1663 working face in Jisan Coal Mine, it is pointed out that the change of propulsion speed can affect the release of seismic energy around the working face to a certain extent. When the working face Daily propulsion degree of 4.8 ~ 5.6 m, fewer daily vibrations, vibration energy is low. By analyzing the relationship between the mining footage and the rock burst, the interaction between them is found, and the relationship between the occurrence of the microseismic event and the propulsion speed is studied. With a view to reaching the goal of preventing the rock burst Based on the determination of the reasonable advancing speed of the working face and put forward the mining footage as one of the standard rock burst prevention standards that can be used later in the same level with the mining area to play a guiding role in the production phase for the mine safety Production provides a strong guarantee.