幂律型浆液扩散半径研究

基于广义达西定律及球形扩散理论模型，推导出幂律型浆液在砂土中进行渗透注浆时有效扩散半径计算公式。分析了注浆压力差随浆液流变参数c和n及浆液扩散半径的变化情况。注浆压力差随流变参数c，n分别呈线性和非线性变化，浆液扩散半径增大所需的注浆压力差也相应的增加，增长的幅度受浆液流变参数的影响显著。

Study on grouting diffusion radius of exponential fluids

Based on the generalized Darcy’s Law and theory for spherical diffusion model, a formula for calculating the effective diffusion radius of exponential fluids injected into homogeneous sandy stratum in grouting is deduced . It shows that the grouting pressure difference is related to the grout rheology parameters c, n and the diffusion radius. The grouting pressure difference change with c by linearity rule and with n by nonlinearity rule. Grouting pressure difference increases with increasing radius, and the increasing grades are notably affected by the grout rheological parameters.