以浅孔抽放钻孔密封机理为出发点,针对由于对钻孔周壁的裂隙场缺少必要研究而导致无法对注液参数进行明确量化标准的现状,建立了煤岩体裂隙的几何模型,运用数值模拟对粘液在钻孔周围裂隙中的渗透规律进行了模拟,通过对模拟数据的整理分析得到了注浆压力、粘液粘度与密封效果的关系。
Aiming at the present situation of no proper mucus quantitative criteria for the grouting parameters because of lack of research on the cracks around the borehole,the geometrical model of cracks was established and the mucus infiltration law in the cracks around the borehole was simulated on the basis of sealing mechanism of shallow-hole drainage.The influences of grouting pressure and mucus viscosity on the sealing effect were obtained according to the numerical simulation data.