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为进一步完善与丰富幂律型流体的渗透注浆理论,探讨了幂律型流体的柱形渗透注浆机制.采用理论分析与实验研究等方法,以幂律型流体流变方程及渗流运动方程为基础,推导了幂律型流体柱形渗透注浆扩散机制;分析它的适用范围及参数确定方法,并设计室内注浆试验对其进行验证.结果表明:实际测量计算的幂律型流体在被注砾(砂)石体中的等效扩散半径值与由幂律型流体柱形渗透注浆扩散机理公式计算出的扩散半径理论值间虽有30%35%的差异,但都处于可接受误差范围内.幂律型流体柱形渗透注浆扩散机理在整体上能较好地反映幂律型流体在被注介质中的柱形注浆渗透扩散规律,可为实际注浆施工提供理论支撑与指导作用.
In order to further improve the percolation grouting theory of power-law fluid, the mechanism of column-shaped permeation grouting of power-law fluid is discussed. By means of theoretical analysis and experimental research, the rheological law of power law fluid and equation of seepage motion Based on which the power-law fluid column permeation grouting diffusion mechanism was deduced.The application range and parameter determination method was analyzed and the indoor grouting test was designed to verify the method.The results show that the power law fluid actually calculated by Although the difference between the equivalent diffusion radius in the gravel (sand) body and the theoretical value of the diffusion radius calculated by the power-law fluid column permeation grouting and diffusion mechanism formula is 30% and 35% Accept error range.Power-law fluid cylindrical seepage grouting diffusion mechanism can well reflect the law of penetration and diffusion of power-law fluid in cylindrical grouting of injected medium as a whole, which can provide theory for actual grouting construction Support and guidance.