Groundwater seepage forces probably act on lining when a deep tunnel in unfavorable geology is excavated under a high groundwater table. Serious water inrush consequently flows into tunnel and threaten the construction and operation safety of tunnel. To obtain analytical solution for deep pressure tunnels using composite stratum under a high groundwater table, the mathematical model is established based on the basic theory of hydraulics and seepage theory. The groundwater pressure is determined in different stratum by the theoretical derivation. The water pressure distribution under different water sealing efficiency and inflow of water have the same trend although the size effect of the model and the complexity of seepage will affect the results of numerical analysis. The analytical solution for deep pressure tunnel is verified by the numerical analysis. The analytical solution can be used for approximate groundwater pressure of lining in composite stratum under a high groundwater table.

当在高地下水位下挖掘地质条件不利的深隧道时，地下水渗流力可能会作用于衬砌。严重的突水涌入隧道，威胁隧道的施工和运营安全。为获得高地下水位复合地层深压隧道解析解，基于水力学基本理论和渗流理论建立数学模型。不同地层的地下水压力由理论推导确定。尽管模型的尺寸效应和渗流的复杂程度会影响数值分析的结果，但不同水封效率和进水量下的水压分布具有相同的趋势。通过数值分析验证了深压隧道的解析解。该解析解可用于高地下水位下复合地层衬砌的近似地下水压力。