试验教学是土力学课程教学中的重要内容，但由于教学条件和试验课时数的限制，许多重要试验学生很难按规程要求在实验室完成，而且常规的土工试验难以准确测定含有较大颗粒岩土体的物理力学特性，影响了土力学试验教学效果。基于离散元颗粒流程序，建立了计算机模拟试验辅助教学系统，作为土力学试验教学的补充，帮助学生直观、快速理解土力学试验的主要方法和原理，有助于学生观察到试验过程中土体颗粒排列及孔隙等细观特征的变化情况，增强学生对土体性质的认识和理解。%Experimental teaching is an important part of the class teaching of soil mechanics. But as the limitation of teach⁃ing conditions and experimental time, it is very difficult for students to complete experiments according to the standardized docu⁃ments in the laboratory. And it is not easy to accurately determine the physical and mechanical properties of the rock and soil mixture by common geotechnical tests when the large particles are included. Then the effect of experimental teaching of soil me⁃chanics is not very efficient now. Based on the discrete element program particle flow code ( PFC) , a computer simulation exper⁃iment assistant teaching system is established, which is used as a supplementary teaching system and can help students to under⁃stand the main methods and principles of soil mechanics experiments, and help students to observe the changes on soil particle distribution and porosity in the experiment process.The system can make students to understand soil properties properly.
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