崩滑体破坏弹冲动力特性研究

Research on Elastic and Impulsive Dynamic Charateristics of Landslides

三峡库水位变动诱发和加剧了崩滑地质灾害,崩滑体破坏弹冲动力特性亟待研究。针对滑塌式危岩,建立了力学模型,构建了危岩体失稳弹冲动能计算方法;通过数学与物理描述,得到了判别危岩动力失稳的重要指标;指出危岩体动力失稳瞬间系统的临滑聚能将释放并转换为危岩崩落动能,揭示了动力系统能量释放量与弹冲动力参数的关系。

The reservoir water level fluctuation of the three gorges directly induced thousands of rock fall and collapses. The elastic and impulsive dynamic characteristics of landslides are urgent to be studied. Mechanical model is established to research the tension-shear perilous rock, and it finds out the expression of the elastic and impulsive kinetic energy of perilous rock. Through the mathematical and physical description, it gets the index of judging perilous rock dynamic instability and indicates that accumulating energy will release and transform to the elastic and impulsive kinetic energy by collapse. Moreover, it reveals the relationship between releasing amount of energy in the dynamic system and the dynamic parameters.