根据各向同性岩石中隔水边界与水平方向的夹角，在岩石渗透性随深度呈负指数衰减条件下，分两种情况给出了二维稳定流隧道涌水量的解析解和数值解。分别对隔水边界距离和隧道埋深对隧道涌水强度的影响，以及岩体中上下水位的巨大差异进行了理论分析。此法可用于预测隧道涌水量，并给出了算例及关系曲线。

Analytic solution and numerical solution are obtained for predicting tunnel water inflows and water head under the condition of an exponential decrease of hydraulic conductivity with depth in an isotropic jointed rock mass. According to the angle between the horizontal ground and non-flow boundary, analytical solution and finite-element solution are presented respectively. Effects of tunnel depth and non-flow boundary distance on predicted water inflow are discussed. A theoretic analysis is conducted to the enormous difference between the up and down water level in rock mass. The solution can be applied to forecasting the water inflows. A calculation example and its corresponding relation curves are given.