深井低孔隙率回采工作面防尘技术研究

Study on the control technique of working face with low porosity in deep well

星村煤矿属深井开采,煤尘爆炸指数高,煤层孔隙率低,注水难度较大。通过研究回采工作面防尘与防冲相结合的技术,将卸压孔作为煤层注水孔,坚持煤层注水,保证回采工作面安全回采。工程实践表明,该技术应用比较成功,兼顾防尘、防冲需要,保证了工作面的安全回采。

Xing cun coal mine belongs to deep mining,coal dust explosion index is high,coal porosity is low,water injection is difficult. Through the research on the prevention technology of the working face dust and the pressure bump,using the pressure relief hole as the coal seam water injection hole,adhere to the coal seam water injection,to ensure the security ming of working face. Engineering practice shows that the application of the technology was successful,guarantee the safety of the coal mining face.