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隧道施工过程中对围岩的开挖、支护以及围岩与支护结构的相互作用等围岩力学问题,是“隧道工程”课程的核心内容之一。分析了“隧道工程”课程中主要围岩力学问题及其教学难点,利用数值分析软件FLAC-3D模拟和分析了围岩初始应力场、开挖过程中围岩应力重分布情况、支护结构受力情况以及特殊地质背景下的围岩力学问题,将模拟结果制作成视频和图片进行可视化教学,取到了良好的教学效果。
One of the core contents of “Tunneling” course is the mechanics of surrounding rock such as the excavation and support of surrounding rock and the interaction between surrounding rock and supporting structure in the process of tunnel construction. The main mechanics of surrounding rock mechanics and its teaching difficulties in “Tunneling Engineering” course are analyzed. The initial stress field of surrounding rock and stress redistribution of surrounding rock during excavation are analyzed by numerical analysis software FLAC-3D. Structural stress and the mechanical problems of surrounding rock under the special geological background, the simulation results are made into video and pictures for visual teaching, and a good teaching effect is obtained.