砂卵石地层注浆加固模型及试验研究

The Model and Experiment Study of Grouting Reinforcement in Sandy Gravel Stratum

通过现场注浆试验,分析了注浆压力、注浆时间、浆液水灰比等因素对浆液扩散半径的影响,推导黏性水泥浆液的柱面扩散模型,通过引入曲度系数来体现砂卵石地层浆液渗流路径的曲折度,并对试验结果进行拟合分析。

Through field grouting test, the influence of grouting pressure, grouting time and grouting water cement ratio on grouting diffusion radius is analyzed, and cylindrical diffusion model of viscous cement slurry is deduced. The curvature coefficient is introduced to reflect the curvature of grout seepage path in sandy gravel formation, and the test results are fitted and analyzed.