应用最优化理论，提出了利用水头和渗流量等观测资料反演岩土体渗透参数的可变容差法．该法在近似可行概念的基础上，利用非线性单纯形法直接寻优，可以求解各类具有不同类型约束条件的优化问题．计算效率有较大提高，可解决一般实际工程渗流问题的参数反演问题． Based on the optimization theory, a variable tolerance method is proposed to invert the seepage parameters of rock and soil by using observation data of head and seepage. Based on the concept of feasible approximation, the method uses the nonlinear simplex method to directly search for optimal solutions to various optimization problems with different types of constraints. The computational efficiency has been greatly improved, which can solve the parameter inversion problem of the general actual engineering seepage problem.