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坑道动荷载段的震塌破坏问题是一个长期悬而未决的问题,它涉及到岩石介质的复杂性及其动态破坏复杂性两大难题,该问题是目前防护工程和岩石动力学领域的热点研究问题之一。坑道震塌破坏问题主要是确定地冲击荷载作用下围岩的震塌破坏模式以及震塌质量分布和速度分布规律。论文在广泛查阅分析研究成果的基础上,对地应力作用下围岩自由场中的地冲击传播规律、坑道震塌问题的形成机理、震塌问题的试验研究和震塌问题的数值模拟研究成果进行了综述,初步提出了下一步需要解决的问题。
The problem of the collapse and collapse of dynamic load section of tunnel is a long-standing problem that involves two major problems of the complexity of rock media and the complexity of its dynamic failure, which is a hot issue in current protection engineering and rock dynamics. one. The problem of tunnel collapse is mainly determined by the failure mode of the surrounding rock under the impact load and the mass distribution and velocity distribution of the collapse. On the basis of extensively consulting and analyzing the research results, the paper studied the ground impact propagation law in the free field of surrounding rock, the formation mechanism of the tunnel collapse, the experimental study of the collapse and the numerical simulation of the earthquake collapse A summary of the preliminary proposed the next step need to be addressed.