水力压裂弱化顶板技术研究

Research on Hydraulic Fracturing Weakening Roof Technology

针对煤矿回采过程中大量老空区顶板未垮落的问题,采用水力压裂技术对6203工作面上方4号煤层遗留的老空顶板进行压裂弱化处理。使得4号煤层顶板在矿山压力作用下及时垮落,有利于防止4号煤老空区顶板突然大面积垮落对6203工作面产生动压灾害,保障了矿井安全高效生产。

In response to the problem of a large number of old goaf roof not collapsing during the coal mining process,hydraulic fracturing technology was used to weaken the old goaf roof left behind in No.4 coal seam above the 6203 working face.It makes the No.4 coal roof plate collapse in time under mine pressure,which helps to prevent the sudden large area collapse of the No.4 coal old hollow area roof plate from producing dynamic pressure disaster on 6203 working face,and ensures the safe and efficient production of the mine.