高压磨料射流割缝技术在“三软”不稳定煤层中的应用  

Application of high pressure abrasive jet cutting technology on ‘three soft’ unstable coal seams

作　　者：饶培军[1] 李宝玉[1] 毛凯昭[1] 

机构地区：[1]中国矿业大学电力工程学院,江苏徐州221116

出　　处：《矿山机械》2013年第1期12-15,共4页Mining & Processing Equipment

基　　金：国家"十五"科技攻关项目(2005BA813B07-06)

摘　　要：为了解决"三软"煤层的突出问题,从理论上分析了高压磨料射流在卸压增透方面的可行性,并结合RFPA2D-Flow软件分析了割缝7.5m时煤层内瓦斯压力变化和流动情况。在大平矿工作面进行的试验结果表明,高压磨料射流技术能够有效增加瓦斯释放通道,提高单循环掘进速度,降低煤体瓦斯压力,提高煤层透气性系数。In order to solve the outburst of＇three soft＇ coal seams, the paper theoretically studied the feasibility of high pressure abrasive jet in pressure relief and penetration increase, and analyzed the gas variation of flow state of the coal seam cut 7.5 m in length in combination with software RFPA2D-Flow. The results of test conducted on working face of Daping Mine showed that the high pressure water jet effectively broadened the gas relief channel, increased the tunneling velocity of single cycle, and decreased coal gas pressure and enhanced the penetration coefficient of coal seam.

关 键 词：“三软”煤层 高压磨料射流 卸压增透 RFPA2D—Flow数值模拟 

分 类 号：TD713[矿业工程—矿井通风与安全]