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针对孤岛工作面的特殊地质条件,从钻孔施工、封孔方式及注水工艺等方面对煤层注水工艺进行不断试验和改进。试验结果表明:采用螺旋钻杆辅以压风的排渣方式,不同地点采用不同的封孔方式,低压多孔小流量的注水工艺能够改善注水效果,满足实际注水需要。
Aiming at the special geological conditions of island face, the coal seam waterflooding technology is continuously tested and improved from the aspects of borehole construction, sealing method and water injection technology. The test results show that the screwing method supplemented by air blower slag removal method uses different sealing methods in different locations. The low-pressure porous small-flow water-filling technology can improve the water injection effect and meet the actual water injection needs.