【摘要】 通过野外现场调查,室内土质试验和数值模拟,对由地震诱发的筑馆滑坡和降雨诱发的山科滑坡的流动化机制的差异进行了分析。对于筑馆滑坡,滑带土在地震作用下产生液化以后,由于土粒子破碎效应,以及火碎流堆积物的高速剪切效应所导致的高孔隙水压的产生是导致其高速远程滑动的主要原因。山科滑坡的流动化原因则为,由于饱水的风化泥岩具较低的透水性,使得滑坡体在运动中只能发挥很低的剪切强度。更多还原

【Abstract】 The difference between the fluidization mechanisms of the Tsukidate flowslide triggered by earthquake and the Yamashina flowslides induced by rainfall was examined through field investigations |soil tests and numerical simulations. In the case of the Tsukidate flowslide| after a liquefaction of sliding mass the combination effect of grain crushing and rapid shearing rate of the pyroclastic material on the excess pore pressure generation was concluded as the main reason. While in the case of the Yamashina flowslides the low shear strength mobilized in the fully saturated weathered mudstone debris with a very low permeability was attributed to the high mobility of the flowslides.更多还原