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从巴隆的等垂直应变方程组出发 ,结合真空堆载联合预压法的特点 ,建立了真空堆载联合预压的渗流模型 ,给出了渗流的基本方程及其解析解 .同时 ,结合公路路基分级施工的特点 ,推导出分级加荷条件下的渗流量计算公式 ,应用该公式可以核算真空泵配置的台数 ,推求地下水位下降量和渗透水压力随深度的变化 .为进一步降低抽真空用电量提供了依据 .并以一工程实例加以验证 ,算例表明计算值与实测值较为吻合 .
Based on Barring’s equations of equivalent vertical strain and combined with the characteristics of vacuum preloading combined preloading method, a seepage model of vacuum preloading combined with preloading is established, and the basic equations of seepage and its analytical solutions are given. At the same time, Subgrade construction, the calculation formula of seepage flow under the condition of grading and loading is deduced, the formula of the vacuum pump can be calculated by using this formula, and the variation of groundwater level descent and permeate pressure with depth is deduced.To further reduce the power consumption of vacuum pumping And provided a basis for the verification.An example is given to verify that the calculated value is in good agreement with the measured value.