关键词: 聚能, 形变能释放, 剧动式滑坡, 启程速度, 缓动式滑坡

Abstract:

The great shearing deformation energy accumulated in the slope will be released in critical landslide phase; and energy releasing rate of the slope body has the dimension of force. When the amplitude of energy releasing rate of the slope body is greater than the shearing strength of latent slide belt of locked segment, the deformation energy released by the slope body in critical landslide phase will be greater than the energy needing for failure of rock of latent slide belt; and the superfluous energy amount will convert into kinetic energy of landslide mass; and the landslide like this is called acute-moving landslide. Contrarily, the landslide is called slow-moving landslide. The impulse velocity at the cross section of acute-moving landslide is in direct proportion to the tangential stress intensity at it. The tangential stress and the tangential strain energy density of slope body media near to the latent slide surface are the biggest; the impulse velocity of acute-moving landslide is the biggest too. The curve of elastic potential change rate of slope and its expression, which have wealth of information, are deduced. The deformation energy accumulation of the slope body, and the relationship between the deformation energy releasing amount in critical landslide phase and starting velocity including starting method of landslide mass, are described in forms of analysis and illustration drawn by the Matlab software.

Key words: energy accumulation, deformation energy release, acute-moving landslide, starting velocity, slow-moving landslide