深部煤层强矿压多参量监测预警技术研究及应用

Multi-parameter monitoring and early warning technology for strong mine pressure in deep coal seam

  • 摘要:
    目的及方法 针对赵庄煤业3号煤层1311工作面开展多参量监测预警技术研究,基于微震监测、应力监测、支架阻力监测数据实现综合监测预警。
    结果及结论 研究结果如下,1311工作面微震事件以35000 J能级以下的小微震事件为主,微震事件主要集中在单工作面初次见方、二次见方、三次见方和四次见方区域。随着工作面向监测点推进,监测点应力不断升高,且越靠近工作面应力增加量越大。1311工作面周期来压步距范围为5.6 m~15.2 m,平均值为10.9 m,表明1311工作面来压较为平稳,工作面采空区内顶板垮落相对及时,并未产生大面积悬顶。

     

    Abstract: A study on multi-parameter monitoring and early warning technology was carried out for the 1311 working face in the No. 3 coal seam of Zhaozhuang Coal Mine. Integrated monitoring and early warning was realized based on microseismic monitoring, stress monitoring, and support resistance monitoring data. The research results are as follows: The microseismic events at the 1311 working face are predominantly small events with energy levels below 35,000 J, and they are mainly concentrated in the areas of the first, second, third, and fourth “square” stages of the single working face. As the working face advances toward the monitoring point, the stress at the measuring point continuously increases, and the closer to the working face, the greater the stress increment. The periodic weighting interval of the 1311 working face ranges from 5.6 m to 15.2 m, with an average of 10.9 m, indicating that the weighting behavior is relatively stable, the roof caving in the goaf is relatively timely, and no large-scale suspended roof has formed.

     

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