基于黏度时变性的水泥–玻璃浆液扩散机制研究

工程地质灾害治理中，注浆是最常用的方法，浆液的扩散运移规律对工程设计和施工具有重要的意义。采用SV振弦式黏度计测定水泥–玻璃(C-S)浆液的黏度时变性，通过函数拟合获得黏度函数曲线；采用广义宾汉流体本构方程，推导C-S浆液在单一平板裂隙中的压力分布方程；通过平板裂隙注浆模拟试验研究，分析定注浆流量条件下的C-S浆液扩散的压力场分布规律；运用数值计算方法，研究定注浆速率条件下的浆液扩散形态及压力场时空变化规律。结合理论分析、模拟试验和数值计算结果分析C-S浆液扩散机制，希望能够为C-S浆液的工程应用提供一定的借鉴。

RESEARCH ON C-S SLURRY DIFFUSION MECHANISM WITH TIME-DEPENDENT BEHAVIOR OF VISCOSITY

Grouting method is a common way to control engineering geological hazard；the movement law of grout diffusion has important significance to engineering design and construction. Application of SV vibration string viscometer to determine the time-dependent behavior of viscosity of cement-silicate(C-S) grout，viscosity function curve is obtained by function fitting. Constitutive function of generalized Bingham fluid is adopted to deduce the pressure distribution function of C-S grout in single plate fracture. During the test，the pressure distribution law of C-S grout diffusion under condition of fixed velocity is analyzed；under the same conditions，the pressure field investigated as well as velocity field are investigated with numerical method. Based on theoretical analysis，simulation test and numerical calculation results，diffusion mechanism of C-S grout is analyzed. It is hoped that the results will be constructive to application of the C-S grout.