霍尔辛赫煤矿可控冲击波增透技术研究

Research on controllable shock wave anti-reflection technology in Huoerxinhe Coal Mine

为了增加煤层透气性,提高煤层瓦斯抽采效率,本文以霍尔辛赫煤矿3号煤层2103轨道顺槽为研究对象,应用可控冲击波增透技术对煤层进行了增透试验研究,在采帮区域常规钻孔影响区域与非采帮无任何采动影响区域共设置7个增透钻孔。试验结果表明,增透作业提高了钻孔瓦斯抽采流量,并初步优化了2号煤层增透工艺参数,实施单点增透6次的工艺参数下抽采效果最佳;在距增透钻孔不同距离上布置的观测孔的抽采效果,验证了可控冲击波的有效增透半径;经过对抽采数据的统计,无论从增透孔的日均抽采量、抽采量的变化趋势,还是观测孔的日均抽采量、抽采量变化趋势,都证明了可控冲击波增透煤层的有效性,保证了霍尔辛赫煤矿正常生产接续。

In order to increase the permeability of coal seam and improve the efficiency of gas drainage in coal seam,this paper takes the 2103 track crossheading of No.3 coal seam in Huoerxinhe Coal Mine as the research object,and uses the controllable shock wave antireflection technology to study the antireflection test of coal seam.A total of 7 antireflection boreholes were set up in the influence area of conventional boreholes in the mining area and the non-mining area without any mining influence.The test results show that the anti-reflection operation improves the gas extraction flow of boreholes,and the anti-reflection process parameters of No.2 coal seam are preliminarily optimized.The extraction effect is the best under the process parameters of single-point anti-reflection for 6 times.The extraction effect of the observation holes arranged at different distances from the antireflection drilling hole verifies the effective antireflection radius of the controllable shock wave;through the statistics of the extraction data,both the daily average extraction amount and the change trend of the extraction amount of the anti-reflection hole,or the daily average extraction amount and the change trend of the extraction amount of the observation hole,all prove the effectiveness of the controllable shock wave anti-reflection coal seam,and ensure the normal production continuation of the Huoerxinhe coal mine.