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通过对公乌素地区16#煤的渗流物理参数测定,用综合评价方法对该地区16#煤的注水效果进行了评价。评价结果表明,16#煤层渗透系数初始值为2.432,镜质组最大反射率平均为1.13%,裂隙分形维数为1.512 4,孔隙率为6%,平均水-煤接触角为68.2°,研究认为公乌素16#煤属注水效果中等的煤层。为提高注水效果,采用了延长注水时间、重复注水等措施,有利地解决了该地区16#煤层的顶煤冒放性差、放煤过程粉尘大等问题。
Through the determination of seepage physical parameters of 16 # coal in Gongwusu area, the water injection effect of 16 # coal in this area was evaluated by comprehensive evaluation method. The results show that the initial permeability of 16 # coal seam is 2.432, the average reflectivity of vitrinite is 1.13%, the fracture fractal dimension is 1.512 4, the porosity is 6% and the average water-coal contact angle is 68.2 °. It is believed that the 16 # coal in Gongshu is a coal seam with medium water injection effect. In order to improve the water injection effect, such measures as prolonging the water injection time and repeating water injection have been adopted to solve the problems such as the poor discharge of the top coal in the seam # 16 in this area and the dust in the coal caving process.