【摘要】 针对高速滑坡能量大、速度快,往往会带来灾难性破坏的严峻现实,研究滑坡的发生机制、分析滑坡体的滑动时间及滑动速度对预测滑坡体的破坏特征具有重要意义。基于灾变链式理论,借助滑坡体含水条件下的突滑力学模型,结合滑动过程中的能量转化和耗散,提出一种新的滑坡体滑动速度及滑动时间的计算公式。该计算公式考虑了孔隙水和空气阻尼的耦合作用,能够较好地符合实际情况。实际工程中可用该公式来判断滑坡的危害性,为工程设计及施工提供理论依据。更多还原

【Abstract】 Many serious disasters are resulted from high-speed landslides,which take huge energy and high speed as their characteristics.So it′s important to research the mechanism of high-speed landslides,sliding velocity and time to predict the damages.Based on the theory of eco-environmental catastrophe chain and mechanical model of sliding mass which takes water into account,a new calculating formula which is used to estimate the sliding velocity and sliding time is proposed;and the transformation and dissipation of energy during sliding are also involved in the formula.The coupling performance of pore water and atmospheric damping is considered in this formula;and it can fit actual situations very well.It can be used to predict the damage of high-speed landslides so as to offer theoretical proof to the design and construction of projects.更多还原