总结了三维数值模拟计算中在边界条件选择上存在的若干问题。提出了以地壳上层地应力实测资料为基础 ,以地区性的震源机制及壳内剪切强度规律为约束 ,逐步调整的方法 ,得到板内地壳中 3个主应力和 3个最大剪应力随深度的变化曲线。进而论证了复杂构造条件下三维数值模拟计算中边界条件的选择与可能得到的结果 The problems existing in the selection of boundary conditions in three-dimensional numerical simulation are summarized. Based on the measured data of the upper crustal stress and the method of regional focal mechanism and shear strength in the crust, the three principal stresses and the three maximum shear stresses with depth The curve of change. And then the selection of the boundary conditions and the possible results in the three-dimensional numerical simulation of complex structures