The law of stress and strain of the structure for various span tunnels had been obtained. The processes from elasticity,plasticity,crazing to spalling of structure had been evolved.
采用LS-DYNA非线性有限元程序对炸药在岩石坑道上方封闭爆炸使坑道震塌堵塞的效应进行了数值模拟,得到了坑道跨度变化时结构应力、应变的变化规律,演化了结构从弹性、塑性、开裂、震塌的整个过程。
参考来源 - 跨度对坑道抗爆震塌破坏影响的数值分析·2,447,543篇论文数据，部分数据来源于NoteExpress
分析结果对研究地冲击荷载作用下地下洞室的震塌破坏有一定的参考价值。
The research findings are valuable in the study of the ground-shock-induced collapse of tunnel.
震塌破坏研究的主要目的是要建立震塌平面上的破坏应力与荷载参数的函数关系。
The goal of investigation of spalling failure is to establish the function relationship between the stresses on the surface of the spalling failure and the parameters of loading.
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