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本文基于三维块体有限元分析理论编制了三维块体有限元分析程序FEP3D。该程序可实现网格自动划分且可将应力值合成内力值。算例分析表明：FEP3D的计算结果与商业通用软件ALGOR FEAS的计算结果吻合较好，而使用FEP3D进行计算只须划分较稀疏的网格即可达到较好的精度，有一定的实用性。
In this paper, a three-dimensional block finite element analysis program FEP3D is developed based on the theory of three-dimensional block finite element analysis. The program can be automatically divided grid and can be stress values synthesized internal force value. The case study shows that the calculation results of FEP3D are in good agreement with the calculation results of ALGOR FEAS, which is a general commercial software. However, the calculation of FEP3D can achieve better accuracy and a certain degree of practicability by dividing sparse grids.