中文摘要：

为确定加固松软破碎煤巷合理的注浆参数,对不同水灰比条件下高水速凝材料单液浆和混合液浆流变曲线进行了回归分析,结果表明：各流变曲线相关系数均大于0.97,回归方程均符合宾汉体的本构方程,确定其流型为宾汉体,针对松软破碎煤巷孔隙率大、渗透系数大、有动压下表现出一定流动性特点,基于广义达西定律和球形扩散理论模型,采用注浆过程中浆液流型不变的假设,推导出宾汉体在松软破碎煤层中基于黏度时变性的有效扩散半径计算公式,进而确定注浆孔间排距和注浆压力的合理参数,与常用注浆参数计算Maag公式相比,因该公式没考虑浆液的屈服强度和黏度时变性,计算的注浆扩散半径偏大。该技术应用于大阳煤矿3100工作面回风巷注浆工程,取得了良好的维护效果。

英文摘要：

In order to determine the rational grouting parameters to reinforce the soft and broken seam gateway,a regressive analysis was conducted on the rheological curve of the high water rapid hardening single grout and the mixed grout under different the water and cement rates.The results showed that the relative coefficient of each rheology curve would be over 0.97,the regressive equation could meet the constitutive equation of Bingham fluid.The fluid type was set as the Bingham fluid.According to the large porosity rate,large permeability coefficient and certain flowability features under the dynamic pressure,based on the general Darcy＇s law and the spherical diffusion theory model,the grout flow pattern unchanged assumption in the grouting process was applied to inference the effective diffusion radius calculation formula of the Bingham fluid in the soft broken seam based on the viscosity time variety.Then rational parameters of the row distance of the grouting boreholes and the grouting pressure were set up.In comparison with the Maag formula for the conventional grouting parameters calculation,due to no considerations on the yield strength and viscosity time variety of the grout,the grouting diffusion radius calculated with Maag formula would be obviously too large.The grouting reinforced technology was applied to the grouting project of the return airway in No.3100 coal mining face of Dayang Mine with excellent maintenance results.