摘要
介绍了煤层深孔松动增透爆破技术的技术参数和工艺,以及采用该技术应注意的事项,比较了采取该技术前后掘进进尺、最大钻屑量和最大瓦斯涌出初速度,以及瓦斯抽放流量的变化,并提出了一些有针对性的改进意见。实践证明,该技术在高瓦斯低透性煤层中应用后,减少了突出危险性,提高了边掘边抽瓦斯的抽放效果。
The paper describes the parmeters and process of longhole shock blasting technique for high gassy coal seams and the matters for attention during the application of this technique,makes comparison of the aviation of heading face advance footage,the maximum drill cuttings and maximum initial gas emission velocity before and after the application of this technique,and puts forward some directive opinions fir its improvement.The practice demonstrated that this technique can reduce outburs hazard and raise drainage efficiency when it is applied in high gassy coal seams with low gas permeability.
出处
《矿业安全与环保》
2003年第2期1-2,5,共3页
Mining Safety & Environmental Protection
基金
安徽省教育委员会基金(2002kj287zd)
