中文摘要：

在大 Wenchuan 地震引起的 geo 危险之中，快速、长的刺杀岩石崩落碎片流动由于大量代替的材料和结果的灾难的影响具有主要担心到风景和社会经济的结构。以便分析这种 geo 危险的动态过程， Donghekou 岩石崩落碎片流动在这份报纸作为一个例子被给。这个事件，杀死了 780 个人，与超过 2400 m 的全部的长刺杀距离在 1300 m 的举起开始了。幻灯片团主要由白云石石灰石和 Sinian 系统的硅质的石灰石组成，和碳板岩和 phyllite 寒武纪。在到幻灯片运动的最后的停止的从幻灯片开始的进程期间，五个动态阶段发生了，这里作为开始阶段，运动舞台的加速，空气强风效果阶段，影响和重定向舞台和长刺杀 slidematerial 累积识别了舞台。地调查显示由于地震的效果， Donghekou 岩石崩落碎片流动的动力学被地质、构造的条件，地面的本地 geomorphological 方面，和微结构显然控制，填写滑坡的岩石的宏观的机械性质集中。支配 Donghekou 岩石崩落碎片流动动力学的这三个主要因素在这份报纸详细被讨论，并且地调查的重要结果和材料的测试被介绍。上述动态过程在这份报纸被分析，并且一些有用结论被获得了。

英文摘要：

Among the geo-hazards caused by the great Wenchuan Earthquake, the rapid and long runout rockslide-debris flow is of primary concern due to the large volume of displaced material and the resultant catastrophic impacts to the landscape and socioeconomic structure. In order to analyze the dynamical process of this kind of geo-hazard, the Donghekou rockslide-debris flow is given as an example in this paper. This event, which killed 780 people, initiated at an elevation of 1300 m with a total long run-out distance of more than 2400 m. The slide mass is mainly composed of dolomite limestone and siliceous limestone of Sinian system, together with carbon slate and phyllite of Cambrian. During the processes from slide initiation to the final cessation of slide movement, five dynamic stages took place, here identified as the initiation stage, the acceleration of movement stage, the air-blast effect stage, the impact and redirection stage and the long runout slidematerial accumulation stage. Field investigations indicate that due to the effects of the earthquake, the dynamics of the Donghekou rockslide-debris flow are apparently controlled by geologic and tectonic conditions, the local geomorphological aspects of the terrain, and the microstructural and macroscopic mechanical properties of rocks which compose the slide mass. These three main factors which dictate the Donghekou rockslide-debris flow dynamics are discussed in detail in this paper, and significant results of field investigations and tests of materials are presented. The above dynamical processes are analyzed in this paper, and some useful conclusions have been gained.